Reboots, contacts, and battery

Lately while I've been on calls, thinking I'm still being heard by the other party, my phone just shuts off and reboots. This has been going on for about 2 1/2 months. After seeing what apps could be causing it, clearing the cache, and factory resets I still have this problem.
Also, when tapping on contacts an error message comes up and states that my contacts are not available. After tapping nearly 5-7 times I can finally open contacts.
Finally, the battery life, even when not being used, is being sucked dry and I am now finding myself living off a charger. I got this phone mainly for its supposed good battery life but even in standby mode, with no Bluetooth on and even while connected to WiFi, the battery still drains...and drains fast. I have only had this phone since March and I'm sincerely disappointed as I was under the impression that this phone would be just what I needed for my lifestyle .
Any advice on the above would be greatly appreciated. Thank you.

Have you updated it recently) there is a new update that came out not got long ago and is causing some issues I have a Droid Maxx and the current software on it is 21.11.21 mine's doing fairly well, it has a hiccup every once in while like after it loads up.. but other than that it's running ok
I'd have a Rep at a Local Corporate Store Look at it..

Similar Messages

Driod 4 keeps rebooting itself and battery won't stay charged

What do I do about my droid 4 constantly rebooting itself after the verizon wireless update that was pushed out March 23 or so?
1st my phone was frozen after the update and I had to request a replacement phone.
2nd the replacement phone randomly just reboots, whether I am using it or not.
The battery barley stays charged even when it's on the charger. I have all the data syncs off
I can't update my apps because the phone says it does not have network access., but I can make call and send text messages.
very upset about this, verizon should have tested the update further before pushing it out. there was nothing wrong with my original phone, now I h ave a large paper weight that has to stay hooked to the charger.

Hi alval!
I am sorry to learn of the rebooting issues with your phone after the latest software update. Let's get your phone our the paper weight mode and back into the awesome wireless device that it is! I had similar issues with my phone after the latest software update and I resolved all issues by doing a factory reset http://vz.to/TZvgLF as this clears any third party applications conflicts and any potential system errors created while processing update. Make sure to back up all your important media before doing factory reset as this process deletes all media and bring phone back to original state. Keep us posted.
AntonioC_VZWSupport
Follow us on Twitter at www.twitter.com/VZWSupport

Several issues on my Classic. Contacts, BB Link and Battery Monitor. Help + rant

Hello everyone,
Initially I wanted to make this post specific to my most recent problem (BB Link) but maybe I can get some help with all of my problems in one post.
1. Contacts display and Caller ID - my biggest problem.
I used gmail to sync my contacts when I switched from iPhone to Android and now on BlackBerry. I had no problems with the iPhone and the Nexus 5, but Contacts on BlackBerry is bad. Very bad. I thought that switching to BlackBerry I'd have 0 problems with calling people because it's a "serious" business phone, and business people really need the call function to work 100%. I have only 250 contacts and they are fully synced (2weeks now). I don't have duplicates.
I suspect that the culprit is "smart dialing". The "feature" I can't turn off. Maybe someone can set up smart dialing better than I can.
- I live in Romania so our Country Code is +40 .
- The rest of the number is xxx xxx xxx. (9 characters)
- so, a Romanian number is +40 xxx xxx xxx when dialing from abroad.
When dialing normally (national calls), we have to add the 0 from the country code in front of the phone number. That makes our phone numbers 0xxx xxx xxx. Due to this format, I've set the "National Number Length" to 10. (Same problem with 9). And we don't have an area code.
Just now I received a call from someone and it showed his caller ID. On the next call (same person), it didn't show the caller ID. In the Call Log, I could only see the number. I pressed info and it showed the name. Then I pressed back and the name was associated with the number again in the Call Log. (10 minutes after writing this i check my call log and I notice that there are some numbers that called but are missing right now from the log. its the 2nd time this happened. they will probably show up in the next few hours).
I also cleaned all my numbers and they all have the same format now. It is CLEARLY a blackberry problem. I had NO problems with caller IDs on iPhone or Android even though the format wasnt consistent through all contacts.
And why can't I just copy the numbers locally? I tried selecting all contacts and "Copy" to local but I just can't. Apparently because they are linked contacts. It shouldn't be this hard.
Also, why do I see linkedin contacts when I chose '"hide" in its menu?
2. BlackBerry Link - (and why isn't it integrated with blend anyway?).
- couldn't back-up over wi-fi. iPhone and android backup over wifi on their servers. I think i connected both of those devices fewer than 10 times total to my computer. Everything was done over wifi. Now i have to connect my blackberry weekly so it can backup? I don't mind that BB doesn't make a full backup on their server, but it should be at least possible to do so over wifi on my network. (or maybe I don't know how to do it?)
- photos. Instead of building its own library, or making it possible to sync directly with folders in my computer, BlackBerry Link uses the iPhoto Library (on my Mac) - which I DONT USE. So I set Iphoto properly, but Link doesnt detect the new updates to the library, I still can't find my specific folder in BlackBerry Link.
3. Battery. The battery monitor is completely useless. Once, after a full charge it showed me that I had 70% battery for 4 hours until it dropped under 70%. It is almost funny what I see in the battery monitor on a daily basis.
The battery life is ok, but I rely mostly on luck. Sometimes it would drop 10% in 10 minutes and then hold a 40% charge for several hours. I don't really know how much battery I have but it generally holds for 1 day so I'm not that worried.
The rant:
I wanted to have a BB for a long time. My gf had a 9900 and even though the camera stopped working randomly, it was very reliable. I used the Q10 shortly after it launched and I noticed at that time that I need more apps than BB World can offer flipboard, banking and just a few others, so I didn't make the switch then. Now with the classic, which has android runtime and the toolbelt (which i really liked on the 9900) I thought it's time to make the switch. But I find it surprisingly annoying exactly where I expected to see its strenght - reliability.
I don't mind the blackberry link part so much, or that android apps work a bit laggy. I expected that. But I DO expect to see who is calling me and to have a reliable battery monitor.
Other issues:
- it doesn't completely lock the buttons when in holster. why do I have to be careful how I position my phone in my pocket so I don't accidentally turn it off? Also the holster rubs against the volume down button when inserted (original BB holster).
- weird noises when I change the volume during a song or youtube video
- due to a bug in a webpage or in the browser, it used 600 mb in about 10 minutes while running as an active frame.
Apparently I blew off some steam. I really want to like this device. Hope future updates will make it better.
Edit: After a reboot the call log returned to normal....

First thing I would do is to switch the following off:
Contacts > Settings
Automatically Merge Contacts = Off
Unmerge Existing Contacts = On
Just to clarify, do you have all the contacts phone numbers in the format
+40 xxx xxx xxx ?
This would be ideal.
Blackberry Engineering in Switzerland - Dexion Services AG

My phone seems to delete contacts and info when the battery gets low, is there a solution to this issue?!

After the most recent update, I've noticed a couple MAJOR changes! 1) The battery life can barely make it through half the day. I have to keep charging it no matter how little I use it. I've even turned off apps running in the background, it didn't make much difference. And 2) When the battery gets really low, at the 10% mark, it deletes contacts and settings. I've lost so many contacts all of the sudden and I constantly have to restore my iPhone. It's so frustrating! And when the battery gets low, it also deletes my e-mail account to receive e-mails on the phone. I'm tired of having to constantly reset my phone carry a charger with me, it's not reliable any longer and I'm not sure why. Help??

Here is some information on the applecare +:
http://www.apple.com/support/products/iphone.html
It appears that you have to buy the applecare within 30 days of buying your phone - you said that your phone warranty is almost over, so when did you buy it??? That could be the explanation for the error.

HT1766 Sadly the last update is causing my battery to run constantly even if i am not using it. Ihave been told to reset my iphone and then set it up as a new device . How do I do this and keep my contacts and calendar?

I recently did an update and my iphone 4 battery now drains within 6 hours (preveiously would be fine for 36 hours), I was told to reset my iphone and then set it up as a new phone , so as not to have the problem recur. How do I do this and maintain my contacts and calendar if I am not using my computer back up?

Of course the battery "runs" constantly, otherwise the phone would die. Duh!
Basic troubleshooting from the User's Guide is reset, restart, restore (first from backup then as new). Try each of these in order until the issue is resolved.

HELP! my ipad 2 keeps rebooting itself after 2 minutes and battery is stuck at 1%. what should I do?

HELP! my ipad 2 keeps rebooting itself after 2 minutes and battery is stuck at 1%. what should I do?

Step by step troubleshooting:
1. Reset
Hold the Sleep and Home button down until you see the Apple logo
2. Restore:
http://support.apple.com/kb/HT1414
3. Recovery:
http://support.apple.com/kb/HT1808

Last night my ipod touch(with iOS 5 beta 4) tried to reboot itself and is just not starting. it does not allow me to do anything and does not start till it's battery is exhausted. iTunes is not recognizing it. pls hlp............!!!!!!!!!!

Last night my ipod touch(with iOS 5 beta 4) tried to reboot itself and is just not starting. it does not allow me to do anything and does not start till it's battery is exhausted. iTunes is not recognizing it. pls hlp............!!!!!!!!!!

Please post in the developer forum using your account credentials.
Stedman

Dialer and battery

Normally, my HTC Thunderbolt with an extended battery gives me about 10-12 hours of talk and internet use and about 24 hours of standby time. On Friday 9/14 I got just four hours of use. In looking at battery use, I see the dialer went nuts chewing up 25% of the battery on a continuous basis. I had not made any calls since Thursday evening.
Force stopping the dialer and a cold reboot did not solve the problem.
However, after leaving the device turned off and on charge over night I see the dialer has throttled back to 2% of use or zero. This is standby mode as I understand it.
A review of various Android forums on the Internet shows many reports of similar problems with Android phones. A call to Verizon Technical Support revealed the carrier has no record of this type of problem!
There is no single cause of the dialer going berserk, but some reports suggest is it associated with the following sound settings being checked "on":
- Quiet ring on pickup
- Pocket mode
- Flip for speaker
All three settings are associated with the motion sensor. My suspicion is that a bug in the motion sensor code keeps the dialer from shutting down after a call and after one or more of these functions are triggered by the user.
The older version of the dialer had a setting that forced it to shut down after a call. You could set it to return to the contacts screen on hang up. That option is gone in Android 2.3.4, SW # 2.11.605.19 71ORD
It is not useful to turn off the motion sensor, though there are NON-root tools do so, since it is also used for screen orientation, e.g. landscape v. portrait, for other functions.
It seems to me that HTC and Verizon have some explaining to do because hundreds of reports on the Internet clearly means some of them must have been brought to the carrier's attention over time.
BTW: Verizon's technical support blamed the battery and sold me a new extended unit for $50 since the original was out of warranty. That was before I did the research I am reporting here.

<In an effort to avoid board clutter, this discussion will be locked. Please see any replies in Dialer and battery use.>

Today, randomly my iPhone 5 stopped working. It has been on this black screen with the apple logo and some small white writing at the top of the screen for many hours. I've tried rebooting it and connecting to iTunes but nothing has worked.PLEASEHELP

It has been on this black screen with the apple logo and some small white writing at the top of the screen for many hours. I've tried rebooting it and connecting to iTunes but nothing has worked.
PLEASE HELP!!!!!!!!

It likely means there was still water inside it and something has now shorted out and permanently damaged one or more components. THE very worst thing you can do with wet electronics is energize them - even a small drop of water inside on any of the circuitry or electrical contacts can cause catastrophic damage.
Take it to Apple for a free evaluation, but most likely you will need to replace it. For the out of warranty fee ($269.00 USD) you will get a refurbished replacement (like new, with a factory new screen and battery). An out of warranty replacement will also re-instate your remaining warranty, or 90 days warranty, whichever is longer.

Blackberry z10 hanging and battery problems

I have a blackberry z10, STL 100-1, after like 4 weeks of using it, i realised that the battery drained quickly so decided to do a security wipe. thats where my problems started. The battery heats up and the phone goes off or rather hangs then goes off. to switch it back on, i have to put it on charger, which it shows battery completely empty even if its full, after a few mins charge the phone works again. This problem occurs usually say when im browsing the a text or whatsapp message is received. any help? oh. and ive tried security wipe like 10 times, problem still not solved

What is happening is that your on-device battery meter is off-sync with the actual battery charge.
Connect to your OEM wall outlet battery charger and while still connected and powered on, remove the battery a minute to reboot. After reboot leave to fully charge to 100%.
Thus will reset the false charge reading. You may need to do perform this procedure 2-3 times.
1. If any post helps you please click the below the post(s) that helped you.
2. Please resolve your thread by marking the post "Solution?" which solved it for you!
3. Install free BlackBerry Protect today for backups of contacts and data.
4. Guide to Unlocking your BlackBerry & Unlock Codes
Join our BBM Channels (Beta)
BlackBerry Support Forums Channel
PIN: C0001B7B4 Display/Scan Bar Code
Knowledge Base Updates
PIN: C0005A9AA Display/Scan Bar Code

Reboot Loop and Lock Button Fail

I own a 3G iphone that is just a few months out of warranty (approx 2.4yrs old). It has the 4.2.1 OS and I have only ever had legitimate music and apps on it. It has never been jailbroken.
Recently it has started to be glitchy and calls would drop out a lot but now it automatically reboots then crashes after about 4 seconds, attempts to reboot again and then crashes. The cycle continues on and on...regardless of how charged the battery is. The only way I can get the phone to respond is to plug it into a charger or itunes and then it behaves normally, apart from the lock button not working. Obviously I can't have it plugged in 24/7 so I need to get it fixed. Once unplugged the phone lasts until it automatically locks (after 1 min) then starts cycling again.
I attempted to restore it to my previous sync but the same error kept happening so I put it back to factory settings. I managed to wipe all my apps and contacts...but not the glitch I attempted to reset it to factory settings approx 3 times in the hope that it would take the hint and GET IT TO RESET! But it is being stubborn and I'm not impressed.
Any solutions?

i should also note that the button has been slowly failing over the last month, until it finally stopped working all together, making it impossible to lock the screen or turn the phone off.

Data usage and battery drain has skyrocketed with iOS 8.1.2 (maybe earlier)

3 weeks ago my wife got a text message on her iPhone 5 from AT&T that she had used 90% of her data for the month. 30 seconds later, she got another one saying that she had used 100%. Granted, her data plan is small, 200 MB. But, for the last two years she has used as little as 17 MB in a month and her largest prior to this latest month was 49 mb. This month she got to 380 mb before we were able to shut off her cell data. Otherwise, a second chunk of 200 MB and another $15 would have been added to the month.
We had noticed that her battery had been draining rather rapidly in standby mode with no background apps running when she didn't have access to WiFi. We have now correlated the two results, High Cell data usage, Quick battery drain and very warm phone. In case anyone is wondering about her iPhone 5 being one in the recall, it is. I took it in and had it tested. Apple says the battery is fine. It does hold a charge well. When all network communications are shut down on her phone and it is in standby mode, there is no noticeable loss of charge in 24 hours (our longest test).
Since I have a grandfathered Unlimited Data Plan with AT&T, I have been doing some testing on my iPhone 5s. Sure enough, I've seen similar results. With nearly everything turned off except Cell Data, I've seen 483 MB used in 24 hours. Of that total, 479 MB was used for Documents & Sync. I even have everything turned off in my iCloud account, Location services are turned off, no push notifications etc...
The best I can figure, this has been a problem since we installed 8.1.2 and yesterday I installed 8.1.3 resulting in no positive effect on this issue.
At this rate of data usage and no access to WiFi, my wife would have to have a 15 Gb data plan to keep from exceeding her limit. I don't think AT&T even offers one that big anymore. I might have to switch to Sprint or T-Mobile if this doesn't get resolved.
Any ideas would be greatly appreciated. Thanks in advance for your shared insights.

Hey this is Brian, bjmcmurry, under a different user ID. If I logged in as bmcmurry, original post, I was just getting a server error and couldn't get to this discussion nor post a comment anywhere.
Anyway, let me be as brief as I can. After an extensive analysis of replicating the problem on another phone to eliminate it being a hardware specific issue and that the test phone has an unlimited data plan, I was able to stop the excessive data usage and consequential battery drain. I believe I have a reasonable explanation of the problem, an iOS logic bug.
I had everything under my control clamped down on the test phone to minimize data usage. Also, I was forcing all data usage to use the cell towers. I determined that I was burning at least 11 to 13 Mb per hour doing nothing important. I literally had everything turned off except 'Settings' was allowed to use Cell data providing a avenue to log into the Apple ID.
The two phones had 2 things in common, they were using the same Apple ID and the same version of the OS. One was a iPhone 5 and the other was a 5s.
Here is a synopsis of my experience via my written evaluation of the Apple support system (Apple Rep name's have been removed):
After a couple of hours on the phone with an Apple Care Senior support Analyst, it was suggested that I go to the Apple Store to 1) get my battery replace in the iPhone 5 since it qualified for the replacement program and 2) see if the Genius could provide me with any insight in the data usage issue and battery drain.
I'm certainly glad I had multiple reasons to visit the closest Apple store, a 45 min drive. I got the battery replaced, thanks for that.
Regarding the important issue to me that brought me to the Genius Bar, excessive Cell data usage, I thought the Genius did a wonderful job listening and documenting the problem we were experiencing. Unfortunately, educating us on the use of the product or replacing our phone was not going to solve the problem. He eventually figured it out, this was not a user error or broken hardware. We surmised that the reason I was sent to him was to verify and document that there was a problem. I clearly had a problem. After writing copious notes on the issue, The Genius smartly referred me back the the AppleCare Senior Advisor. So, back to AppleCare Senior Analyst I went. She, knowing this was not a simple problem to solve i.e. beyond her level of expertise, got an Apple Software engineer involved.
My primary frustration is that this should have been escalated to software engineering right away. My trip to see the Genius was, I believe, a waste of time for both me and Apple regarding this issue. Diagnosis of this type of problem is well beyond the Genius’ knowledge and job. The Genius did a very good job doing what he could within the scope of his job. He just couldn’t solve this problem and had no one within Apple to which he had access for help.
However, that initial consult with the engineer was a bit feeble. Not only could I not talk to him/her directly, his/her focus was still working with the ‘Black Box' approach. Having Analyst ask me to do stuff like restore the Phone was more like trying to find a 'work around' than 'identifying the real problem.' Maybe restoring the phone was going to fix some corrupted data on the phone sidesteping the real problem, the handling of this condition. The engineer did listen to the fact that I had restored the test phone, the 5s, and only added the use of my Apple ID. Duh, been there!!!
Having been an previous owner of a software development company that I started in 1980 and retired in 2001, I can tell you that using the 'Black Box' method of debugging is extremely inefficient. Instead, having access to an ‘Activity Manager’ type app to identify in real time what process was blowing up the data flow would have saved me a lost afternoon at the Apple store and hours on the phone with tech support.
Ironically, I may have stumbled onto a "work around" solution short of turning off Cell Data that stopped the excessive Cell Data usage and consequential battery drain. Just prior to leaving the Apple Store, I used one of their Macs to log in my Apple ID on the id.apple.com website to ‘Manage my Apple ID’, I was forced to upgrade the security level of my password. Afterward, my cell data usage seemed to drop dramatically.
I told the AppleCare Senior Analyst that I may have stumbled onto a workaround and I suggested that I give it a couple of days of monitoring. We'd talk then and I would have results to report. She agreed.
Sure enough, my Document & Sync usage was back to normal, about 1/2 Mb per day. Am I happy that the excessive Cell Data usage has stopped? You bet! But, there was no intuitive reason that an end user would know to log in on the ID website to unknowingly solve this problem. As I use to say to my employees, that is not the ‘Macintosh Way.’ And, rebooting the the 'Microsoft Way.'
When I reported my findings to the Analyst, we both concluded that data usage was back to normal. She did report to me that the engineer did provide a laundry list of suggested activities to help solve the problem. Remarkably, they were everything that I had already done and were pretty much what the Analyst and the Genius tried to do. All reasonable tasks. But clearly, the engineer hadn't even ready the notes on the case before responding. And, none of the things suggested would have uncovered the real problem, likely a logic bug in iOS.
My advice now is to have the software engineering team rule out that there was an unresolvable state that a background process was fiercely trying to handle. The iOS does not seem to know how to intervene and prompt the user with a requirement to upgrade their password. If this does end up being the case, I would call it a logic bug, a perpetual exception that is not being handled properly.
Anyway, I hope this helps you.

I have a restriction passcode that I have no idea what the passcode could be. I know that I need to reset the phone to factory settings but how do go about doing this without losing all of my contacts and other info, etc? (mainly contacts)

     At some point, I don't even remember doing this it must have been so long ago, I set a restrictions passcode on my phone. This has become a problem now because I have so many apps that I do not ever use that take up so much space I can no longer take pictures or put more music on the device. I have read that I need to restore to factory settings but that once I do that I cannot restore to a backup because restrictions passcodes are saved in backups. Is there any way for me to restore my phone to factory settings and then get all of my contacts and perhaps as much other data back as I can? I have tried every passcode I can think of for the restrictions passcode (24 times! to the point that ever time I try and fail I cannot try again for an hour. To say the least, this is quite frustrating as is limits what i can do with my phone on a daily basis, whether it be music or taking pictures and videos etc. Can someone please help me solve this problem without losing minimal data? I have already backed the phone up to my computer as well as iCloud. Even the woman at the apple store told me I had to restore it to factory but was too busy to get further into it and I didn't have a genius bar appointment. If all else fails I can make an appointment and go in there. I just thought I may as well ask on here first to see if there was a way I could do it myself. Thanks for reading and hope you can help me!
-Mike

You can't. Restoring new means everything is erased. If you have a backup made before creating a restriction code, then you can restore that backup, but none later.
Placing your device into recovery (DFU-Device Firmware Upgrade) mode:
Follow these steps to place your iOS device into recovery mode. If your iOS device is already in recovery mode, you can proceed immediately to step 6.
   1. Disconnect the USB cable from the iPhone, iPad, or iPod touch, but leave the
       other end of the cable connected to your computer's USB port.
   2. Turn off the device: Press and hold the Sleep/Wake button for a few seconds
       until the red slider appears, then slide the slider. Wait for the device to turn off.
              * If you cannot turn off the device using the slider, press and hold the
                Sleep/Wake and Home buttons at the same time. When the device turns off,
                release the Sleep/Wake and Home buttons.
3. While pressing and holding the Home button, reconnect the USB cable to the
       device. The device should turn on. Note: If you see the battery charge warning,
       let the device charge for at least ten minutes to ensure that the battery has some
       charge, and then start with step 2 again.
4. Continue holding the Home button until you see the "Connect to iTunes" screen.
       When this screen appears you can release the Home button:
5. If necessary, open iTunes. You should see the following "recovery mode" alert:
6. Use iTunes to restore the device.
If you don't see the "Connect to iTunes" screen, try these steps again. If you see the "Connect to iTunes" screen but the device does not appear in iTunes, see this article and its related links.
Additional Information:
If you have a problem getting into recovery mode then try: RecBoot: Easy Way to Put iPhone into Recovery Mode.
Note: When using recovery mode, you can only restore the device. All user content on the device will be erased, but if you had previously synced with iTunes on this computer, you can restore from a previous backup. See this article for more information.

I had two numbers for one of my contacts and I deleted one because it's no longer in use. But why does it appear when I type in the name (when starting a new message) with the word "other" next to it?

And how do it delete that "other" number entirely from my phone? I've tried deleteing the contact and adding it in again, but it still appears
Also, on an unrelated note, my phone tends to turn off at 10-7 percent. How can I fix this so it turns off after 1 percent? (the phone doesn't turn on after it turns off by itself unless you charge it)

1. Don't wait until your phone completely discharges before charging the battery. To help with the battery percentage reset your phone. Press and hold the Home and Sleep buttons simultaneously ignoring the red slider should one appear until the Apple logo appears. Let go of the buttons and let the device restart. See if that fixes your problem.
2. The phone remembers recently used items in addition to stored items. So the contact you want to delete is presently in the recently used category. If that phone number is not used it will eventually disappear from your phone. Patience IDs the key here.

I restored my iPhone 5 to IOS 7.1 on computer and tried to restore from icloud back up. It says "restore completed" but Apple logo keeps popping up every 5 seconds. It restored only contacts and sms. I can access the phone but have to stop if logo pops

I restored my iPhone 5 to IOS 7.1 on computer and tried to restore from icloud back up. It says "restore completed" but Apple logo keeps popping up every 5 seconds. It restored only contacts and sms. I can access the phone but have to stop if logo pops

Hello khanhlinh98,
I would recommend performing the following steps in order to stabilize your iPhone.
Will not turn on, will not turn on unless connected to power, or unexpected power off
Verify that the Sleep/Wake button functions. If it does not function, inspect it for signs of damage. If the button is damaged or is not functioning when pressed, seek service.
Check if a Liquid Contact Indicator (LCI) is activated or there are signs of corrosion. Learn about LCIsand corrosion.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
The home screen appears: The iPhone should be working. Update to the latest version of iOS if necessary. Continue charging it until it is completely charged and you see the battery icon in the upper-right corner of the screen. Then unplug the phone from power. If it immediately turns off, seek service.
The low-battery image appears, even after the phone has charged for at least 20 minutes: See "iPhone displays the low-battery image and is unresponsive" symptom in this article.
Something other than the Home screen or Low Battery image appears, continue with this article for further troubleshooting steps.
If the iPhone did not turn on, reset it while connected to the iPhone USB power adapter.
If the display turns on, go to step 4.
If the display remains black, go to next step.
Connect the iPhone to a computer and open iTunes. If iTunes recognizes the iPhone and indicates that it is in recovery mode, attempt to restore the iPhone. If the iPhone doesn't appear in iTunes or if you have difficulties in restoring the iPhone, see this article for further assistance.
If restoring the iPhone resolved the issue, go to step 4. If restoring the iPhone did not solve the issue, seek service.
My issue is still not resolved. What do I do next?
Contact Apple Support.
iPhone: Hardware troubleshooting
http://support.apple.com/kb/TS2802
Cheers,
Allen

Reboots, contacts, and battery

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