IPhone 3g shuts down randomly when not in use.

I'm running iOS 4.0 on my iPhone 3G, which I bought used. It shuts down by itself randomly when not in use a few times a day. It never shuts down when in use or when plugged in. I've seen other posts on something similar but no solution. Please help

I have a similar problem, it shuts down, when it's locked, it shut's down, when im using a aplication, it shut's down when im not using it, it's shuts down when it's even plugged in, some say it can be the battery but i dont think so.

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Some Users have Reported that a Restore as New has helped Resolve issues...
Backup and Set Up as New Device
http://support.apple.com/kb/HT4137
Try this First..
Turn the Phone Off...
Press and Hold the Sleep/Wake Button and the Home Button at the Same Time...
Wait for the Apple logo to Appear and then Disappear...
Usually takes about 15 - 20 Seconds... ( But can take Longer...)
Release the Buttons...
Turn the Phone On...

IMac shuts down unexpectedly when not in use

When I get back to my iMac after a long pause, it has shut down.
This is the log for what happened just before it shut down the last time.
21. des. 2014, 19.07.26 CalendarAgent[1323]: [com.apple.calendar.store.log.caldav.coredav] [Refusing to parse response to PROPPATCH because of content-type: [text/html; charset=UTF-8].]
21. des. 2014, 19.08.25 CalendarAgent[1323]: [com.apple.calendar.store.log.caldav.coredav] [Refusing to parse response to PROPPATCH because of content-type: [text/html; charset=UTF-8].]
21. des. 2014, 19.08.25 CalendarAgent[1323]: [com.apple.calendar.store.log.caldav.coredav] [Refusing to parse response to PROPPATCH because of content-type: [text/html; charset=UTF-8].]
21. des. 2014, 19.08.32 mdworker[18669]: Failed to obtain sandbox extension for path=/Users/elfinn/Library/Caches/mdworker. Errno:1
21. des. 2014, 19.08.33 mdworker[18669]: Failed to obtain sandbox extension for path=/Users/elfinn/Library/Caches/mdworker. Errno:1
21. des. 2014, 19.08.33 mdworker[18670]: Failed to obtain sandbox extension for path=/Users/elfinn/Library/Caches/mdworker. Errno:1
21. des. 2014, 19.08.33 mdworker[18670]: Failed to obtain sandbox extension for path=/Users/elfinn/Library/Caches/mdworker. Errno:1
21. des. 2014, 19.08.33 mdworker[18671]: Failed to obtain sandbox extension for path=/Users/elfinn/Library/Caches/mdworker. Errno:1
21. des. 2014, 19.08.33 mdworker[18671]: Failed to obtain sandbox extension for path=/Users/elfinn/Library/Caches/mdworker. Errno:1
21. des. 2014, 19.09.26 CalendarAgent[1323]: [com.apple.calendar.store.log.caldav.coredav] [Refusing to parse response to PROPPATCH because of content-type: [text/html; charset=UTF-8].]
21. des. 2014, 19.09.26 CalendarAgent[1323]: [com.apple.calendar.store.log.caldav.coredav] [Refusing to parse response to PROPPATCH because of content-type: [text/html; charset=UTF-8].]
21. des. 2014, 21.00.20 distnoted[1293]: # distnote server agent absolute time: 130.864989531 civil time: Sun Dec 21 21:00:20 2014 pid: 1293 uid: 506 root: no
21. des. 2014, 21.00.35 mdworker[1312]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8283710070
21. des. 2014, 21.00.36 mdworker[1312]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8285102890
21. des. 2014, 21.00.36 mdworker[1312]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8283505850
21. des. 2014, 21.00.36 mdworker[1312]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8283715960
21. des. 2014, 21.00.37 mdworker[1312]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8285106d90
21. des. 2014, 21.00.37 mdworker[1312]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f828500cad0
21. des. 2014, 21.00.50 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0e19a80
21. des. 2014, 21.00.54 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0f0b080
21. des. 2014, 21.00.54 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0c21a40
21. des. 2014, 21.00.55 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0d214b0
21. des. 2014, 21.00.55 mdworker[1305]: Failed to obtain sandbox extension for path=/Users/elfinn/Library/Caches/mdworker. Errno:1
21. des. 2014, 21.00.55 mdworker[1305]: Failed to obtain sandbox extension for path=/Users/elfinn/Library/Caches/mdworker. Errno:1
21. des. 2014, 21.01.10 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe33066f0
21. des. 2014, 21.01.14 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe3106470
21. des. 2014, 21.01.15 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0f04f10
21. des. 2014, 21.01.15 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe3207780
21. des. 2014, 21.01.34 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0e1f0c0
21. des. 2014, 21.01.34 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe33104b0
21. des. 2014, 21.01.34 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0e21a10
21. des. 2014, 21.01.34 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0e152e0
21. des. 2014, 21.01.58 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.01.59 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.01.59 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.01.59 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.01.59 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.01.59 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.01.59 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.01.59 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.01.59 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.02.11 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.02.14 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.02.14 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.02.15 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.02.15 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.02.15 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.02.18 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe3107a10
21. des. 2014, 21.02.18 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0c237d0
21. des. 2014, 21.02.18 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0d2a470
21. des. 2014, 21.02.18 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.02.57 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe3105ab0
21. des. 2014, 21.02.57 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0f025c0
21. des. 2014, 21.03.00 mdworker[1320]: -[__NSArrayM objectForKey:]: unrecognized selector sent to instance 0x7f8fe0f029c0
21. des. 2014, 21.03.00 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.03.00 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.03.02 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)
21. des. 2014, 21.03.02 mdworker[1318]: ImageIO: CreateMetadataFromXMPBufferInternal Threw error #203 (Duplicate property or field node)

I have a similar issue with my older MacBook Pro 3,1 since Mavericks. In Mavericks it would completely freeze. In Yosemite it reboots.
On my machine somehow it is tied to whether I have Wifi turned on or off (whether associated with a connection or not). I typically use my computer near the router and turn off the wifi. Since Mavericks if I turn off my Wifi, it will eventually crash so I have to manually disassociate but leave wifi on to keep my computer from crashing. Not sure where the [com.apple.calendar.store.log.caldav.coredav] errors fit in but I always see them shortly before a crash if wifi is off.

Mac Shutting down automatically when not in use for awhile

Please excuse my non techinical explanation of this problem !
Model: Macbook Pro5,1
OSX 10.5.7
2.4 GHZ intel core 2 duo
2GB 1067 Mhz DDR3
Im first time mac owner and have very little technical ability ... !
Problem:
Laptop shuts down automatically if idle for about ten minutes ... this time can vary.
Prior to this happening it makes alarming noises which appear to come from the on/off button area. Initially I thought it was a CD banging ... but its not that.
This is the extent of my diagnostics at this stage! I have limited warranty on (based in Ireland) was planning on getting extended apple care warranty only last week ... not sure should i still get the extended warranty now I know this problem exists, cant find apple service centre in Dublin and not sure if I would be covered under limited warranty.
Any advice would be appreciated
thanks

Hi Bibii and welcome to Discussions,
first of, you have posted in the Mac Pro section not the MacBook Pro section here http://discussions.apple.com/category.jspa?categoryID=190
Anyway, is this really a shutdown or is it just sleeping ?
If sleeping check the Energy Savings settings in the System Preferences for when your MBP should go to sleep when inactive.
Regards
Stefan

I have a iPhone 4 and lately it has been shutting down randomly when I still have battery left. It also doesn't turn back on, until I plug it in to the charger. But when I plug it in, the low battery sign shows up then comes to the lock screen with 68%.

I have a iPhone 4 and lately it has been shutting down randomly when I still have battery left. It also doesn't turn back on, until I plug it in to the charger. But when I plug it in, the low battery sign shows up then comes to the lock screen with like 68% left.

Morning Clementine Lin,
For more information this, please see this article:
iPhone: Hardware troubleshooting
http://support.apple.com/kb/ts2802
Take a look at the Will not turn on, will not turn on unless connected to power, or unexpected power off section.
Have a nice day,
Mario

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OS X: When your computer spontaneously restarts or displays "Your computer restarted because of a problem."
http://support.apple.com/kb/TS4636
In most cases, kernel panics are not caused by an issue with the Mac itself. They are usually caused by software that was installed, or a problem with connected hardware.
To help avoid kernel panics, install all available software updates until Software Update reports, "Your software is up to date." OS X updates help your Mac handle the kinds of issues that can cause kernel panics, such as malformed network packets, or third party software issues. For most kernel panics, updating your software is all you have to do.
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Hi,
I was wondering if someone has experienced an issue where an iPhone 3GS shuts down randomly. The issue started tonight just a few minutes ago, the only thing I installed yesterday was iOS 5.0.1. Personally, I don't know what has happened, I do know that my brother has downloaded some songs using the Download Lite App from the App Store. Curiously the issue started occuring after the downloaded one song using that app, but other than that I can't find a problem indicator.

I also having the same issue with my iPhone 3GS with iOS 5.0.1, except most the day went by okay for me until near the end of the day. Perhaps I don't use my iPhone as frequently as you guys are but when I really on to something on it, it just shuts down like a Window virus. (hehe)
Also find some more details on my similar post:
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Thanks for sharing comments/problems guys. It really means a lot.

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IPhone 3g shuts down randomly when not in use.

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