My iPhone 3GS is constantly turning off without warning. Help?

My iPhone 3GS has been constantly turning off and turning back on without warning, but my battery life is at 90%! It has been doing this for a few days, and it doesn't even stay on long enough for me to type in my password. I have tried charging it, holding in the sleep/home button, and turning it off. Nothing seems to work. Help?

Basic troubleshooting is reset, restart, restore.
Although the issue described could be a battery or system board issue.

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My iphone 3gs has completley turned off and will not switch back on with a full battery.

my iphone 3gs has completley turned off. it is fully charged but will not switch on. i have connected it to itunes and it is not recognising the device. i have tried to reset it and this will not work either, and i have tried to restore it by holding down the home button but the apple sign will not come on. i dont know what else to try, any ideas?

Try here. iPhone and iPod touch: Frozen and unresponsive

My MacBook Pro turns off without warning

My MBP (13 inch, purchased mid 2010) turns off without warning. It is a 2.4 GHz Intel Core 2 Duo processor with 4 GB Memory running OS X Version 10.9.4. It happens after periods of both short and long use and has been occurring for the last few months. I keep it updated regularly. I have yet to receive a report when I turn it back on that explains the shut down. So far I have reset the SMC and PRAM as others have mentioned that it helps. No luck though. My battery lasts all day, and I don't use my computer heavily. It doesn't feel hot when it turns off either. There is simply an audible "click" and a black screen. Can anyone help explain this? It is getting very frustrating having to constantly worry that it could crash at any second.

These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
This procedure is a diagnostic test. It makes no changes to your data.
Please triple-click anywhere in the line below on this page to select it:
syslog -k Sender kernel -k Message CSeq 'n Cause: -' | tail | awk '/:/{$4=""; print}' | pbcopy
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window by pressing the key combination command-V. I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key after pasting.
Wait for a new line ending in a dollar sign ($) to appear below what you entered.
The output of the command will be automatically copied to the Clipboard. If the command produced no output, the Clipboard will be empty. Paste into a reply to this message.
The Terminal window doesn't show the output. Please don't copy anything from there.
If any personal information appears in the output, anonymize before posting.

Macbook air turned off without warning?

Hi! Last night my macbook air turned off without warning and wouldn't turn back on until I tried again this morning. A few weeks ago I had my battery and logic board replaced and since then it the screen has gone blue for a few seconds and then back to normal a few times, (in case this is related at all). Is there something I should do to make sure this doesn't happen again.

As you say it is just been repaired I would take it back to the place that repaired it and ask them to look at it.

My Imac will suddenly turn off without warning and then take several hours before it will switch back on again

My Imac will suddenly turn off without warning and then take several hours before it will switch back on again. Can anyone advise?

I like that third tag...
There's really no telling what the problem might be - you may want to try running the Apple Hardware Test (if you can) to see if you've a hardware issue. If you can't even get to the AHT, you've no option but to take the machine into your local Apple Store or an AASP and have them run diagnostics on the machine.
Sorry,
Clinton

Computer turns off without warning on battery power

Starting a few weeks ago I've found that my Macbook Pro has been turning off without warning while on battery power. The first time this happened it was after about an hour of use and now it happens within a half hour or less. If I try turning it back on it shuts off before OS X is fully loaded. According to CoconutBattery my battery's health is at 97%, so the battery isn't losing overall charge capability. When I'm on battery power it says I have 2-3 hours of battery life left. Sometimes I notice this will drop between 1-2 hours after 20-30 min of use (if it'll stay on that long) but it never drops and gives me a warning of low battery. It just shuts off without warning. If I press the button on the battery after this happens I do get 4 out of 5 lights. This never used to be a problem. My computer is 14 months old. I've replaced the battery once about 8 months ago (under warranty) because my original battery was losing capacity very quickly. Because 14 months have passed I can't simply get a new battery under warranty. According to Cocoanut Battery and the Finder my battery should last near it's full capacity. I can't figure out why it's randomly shutting off. I have had all the latest updates including the recent battery patch. Any help would be greatly appreciated. I will award "solved" for a solution and "helpful" for posts that contribute to the solution. thanks!
Message was edited by: Vegabondsx
Message was edited by: Vegabondsx

Because 14 months have passed I can't simply get a new battery under warranty.
Actually (and fortunately), that's incorrect. Apple extended the warranty for all Core Duo notebook batteries to *2 years* from date of purchase. Details are here:
http://www.apple.com/support/macbook_macbookpro/batteryupdate/
Your full charge capacity is fine (as you noted). But one of the symptoms listed on the linked page is +"Battery exhibits low charge capacity/runtime when using a fully charged battery with a battery cycle count (as shown in System Profiler) of less than 300."+ The word runtime in there applies, so I would call Apple or make a Genius Bar appointment and head into a store. (I did the latter, they replaced mine - free of charge - 15 months after purchase, no AppleCare, and no hassles).
Hope this helps...

MacBook turn off without warning

My 4-year-old MacBook start turning off without low power warning while on battery.
I checked the battery level, it's usually around 20~30% once I plug it back on and restart.
Any one have any idea? I got a new battery last summer, and I really don't want to pay for another one.
The following is the information of the battery and my MacBook.
Model Name:          MacBook
Model Identifier:          MacBook2,1
Processor Name:          Intel Core 2 Duo
Processor Speed: 2 GHz
Version 10.4.11
Battery Installed:          Yes
First low level warning:          No
Full Charge Capacity (mAh):          3989
Remaining Capacity (mAh):          1409
Amperage (mA):          1584
Voltage (mV):          12028
Cycle Count:          152

Your battery info doesn't look bad. Have you ever calibrated your battery? This is necessary not so much for the health of the battery, but rather to make sure the battery and your MacBook are in sync. Calibrating your battery is what allows your MacBook to estimate how much of a charge is remaining. Over time, without calibrating, they can become out of sync. When this happens, your computer may think you have a 20% charge, when the battery only has a 1 or 2 percent charge. Since your computer "thinks" it has plenty of charge remaining, it doesn't alert you or go into sleep... but then the battery just runs out. Here are the instructions for calibrating your battery:
http://support.apple.com/kb/ht1490
You might want to reset your SMC first as this is a fairly quick process and see if that resolves your problem first (although you should still calibrate your battery if you haven't done so):
http://support.apple.com/kb/ht3964

Problem: Qosmio 505-Q850 turned off without warning and won't start up

The unit switched off without warning leaving only the LEDs for external power and the battery lit.
When the power button is pressed, it lights up for a moment before dying again. A few seconds later it lights up again before quitting again. While it's lit up the power LED is also lit and a slight vibration is felt from the unit.
Other than the slowly blinking lights and the slight sound/vibration, there's no life from the unit. Any ideas?

Sounds like it aint charging properly... could be a break in the charger wire right before the connector or the internal power connector is bad. the is supposed to run on the charger power alone without the battery intalled. if it does not its definitly the charger or the internal connector. If it does come on with the charger alone let it run for a while an then feel the the power connector and wire to see if its hot. If it is, this can be an indicator of an break in the wire or or a bad internal connector.

My iPhone 3gs is randomly turning off

Hi,
I got problem with mine iPhone 3gs, 32gb. When I use camera, surf the net, or use some apps(Facebook, Zynga poker, Tap Tap revenge) it turns off. Sometimes there are some lines at screen and sometimes it just turns off. If first case I have to hold power button for 10seconds to turn off. After that it shows me charge battery simbol and I have to connect it to power source to continue using it. Every time battery was >50%, so empty battery isn't real problem. I guess it's up to software(I'm at 4.3.5, baseband 05.16.02)?
Can you help me anyhow?
Thanks everyone!

Did you use your latest backup to restore from after the new setup? If yes, try without the backup, it might contain corrupt data causing your problems. Also try the default apps first. If you experience not problems, load the 3rd party apps as well, maybe a couple at a time and see if one of those apps does not work as expected.
If this does not help, you should get it serviced.

My iPhone 3gs just randomly turned off and won't turn back on

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Hold the home and power button down at the same time.

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One month after warranty expires this laptop presents with this problem. It shuts down without warning when running on battery, although the battery has plenty of charge. Following shutdown it won't restart on battery. Plugging in power and restarting it displays a message that the battery is cactus before continuing to boot. When trying to run F2 on startup battery check it simply doesn't progress past the initial screen (1%) and [esc] key does nothing. Need to power off. However, REMOVE the battery, boot the computer, shutdown, REINSTALL the battery, turn on and everything is OK - most recent example showing battery with 95% remaining. Continues to work for a few days until it decides to fail again. Suspect the battery is not at fault here, and in any case can't get a replacement (thanks HP for providing equipment with rare and unusual parts) - one supplier has only two on order which will be delivered some time in September!! Usual third party providers don't provide a replacement for this battery. Have seen a lot of references to this sort of mystery "battery failure - shutdown with warning" but no concrete solution. Have tried different power setting including never hibernate, but these seem unrelated. Open to useful suggestions at this point.

One month after warranty expires this laptop presents with this problem. It shuts down without warning when running on battery, although the battery has plenty of charge. Following shutdown it won't restart on battery. Plugging in power and restarting it displays a message that the battery is cactus before continuing to boot. When trying to run F2 on startup battery check it simply doesn't progress past the initial screen (1%) and [esc] key does nothing. Need to power off. However, REMOVE the battery, boot the computer, shutdown, REINSTALL the battery, turn on and everything is OK - most recent example showing battery with 95% remaining. Continues to work for a few days until it decides to fail again. Suspect the battery is not at fault here, and in any case can't get a replacement (thanks HP for providing equipment with rare and unusual parts) - one supplier has only two on order which will be delivered some time in September!! Usual third party providers don't provide a replacement for this battery. Have seen a lot of references to this sort of mystery "battery failure - shutdown with warning" but no concrete solution. Have tried different power setting including never hibernate, but these seem unrelated. Open to useful suggestions at this point.

Portege M200 turns off without warning.

Hi guys,
My Portege M200 has just developed a problem today. It shuts down without any warnings or info.
The event viewer hasn't logged anything out of the ordinary, I suspect that its an overheating issue because I'm looking at the cpu and gpu temps using speedfan and PC wizard and they both read the cpu temps in the 50's and PCWiz reads the gpu temp as 57. But I am getting no info on the fans is that normal??!!!??!!
Speed fan has 1 manual control for a fan (doesn't say which one, but seem to be the cpu fan) which I now have set at 100% to test it and see if it shuts down again. This has been on for about 5 mins and the cpu temp is down to 36.
I have no way of controlling the gpu fan or getting the temp down on that....
Is there any way of testing the fans/ sensors for determine where the problem is??
Can anybody think of any other things that I can check or that would cause this to happen??
Thanks Guys.

I also believe this happen because of overheating. In such cases the notebook will simply switch off without any warning. Sorry buddy but I believe it is time for cleaning up. Now is the question how you want to do this. Alone or it should be done on professional way.
Your decision!

Display signal turns off without warning...

I have MacMini and the display signal turns off intermittently (i.e. not just sleeping).
The display is via a VGA connection to a Philips monitor (although I've tried with an Acer VGA monitor too and get the same problem).
The only way to fix it seems to be to turn the Mac off and on again.
I feel pretty disappointed. I've used Apple Macs since having a Mac Plus 20 years ago and have always recommended people to use them because "you just plug things in and they work"...
But this is simply rubbish. It's practically useless.
Has anyone else experienced this and are Apple doing anything about it? ...or should I just try to get my money back under the "not fit for purpose" clause in the sale of goods act.

cheers
Sadly no DVI input on any of my monitors...
Doubly annoyed because I bought a new VGA monitor to use with the Mac Mini. I would have bought one with DVI input if Apple had advised this.
Why on earth do Apple sell the HDMI to VGA adapter if this doesn't work?
I sense a formal complaint brewing...

Can I find my lost 3GS with it turned off.

Is there any way to locate my lost iphone 3GS with it turned off??

Only by searching for it.
There is no way to track it at all. Off means off.

My Iphone 3gs wont charge, turn on, or restore itself in Itunes, but the apple logo still appears when I hold the sleep botton. How can I make my Iphone work????

My Iphone 3gs wont charge, turn on, or restore itself in Itunes, but the apple logo still appears when I hold the sleep botton. How can I make my Iphone work???? I know it is not dead because I can see the apple logo on, and every time I connect it to a USB port to charge, or a wall charger, the battery appears with a bit of red. Still, it wont turn on. It's been like this for three days now and I haven't stopped charging it. IT just WONT charge? Any tips I can use to solve the issue?
-Esteban

Hello estebie67,
Thanks for the question, and welcome to Apple Support Communities.
It sounds like the iPhone is experiencing issues upon startup, and may not be loading the firmware or operating system correctly. If you have not already done so, try resetting the iPhone while connected to power:
iPhone, iPad, iPod touch: Turning off and on (restarting) and resetting
http://support.apple.com/kb/HT1430
If the above does not resolve your issue, it will be best to restore the iPhone in recovery mode:
iOS: Unable to update or restore
http://support.apple.com/kb/HT1808
Thanks,
Matt M.

My iPhone 3GS is constantly turning off without warning. Help?

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