The Apple iPhone 5s was announced on September 10, 2013. Repair of this device is similar to the previous models, and requires screwdrivers and prying tools. Available as GSM or CDMA / 16, 32, or 64 GB / Silver, Gold, and Space Gray.

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iPhone shuts down randomly, rst vdd_under

Hello,

i have a problem with my iPhone 5S.

A few weeks ago it started to shut down randomly, sometimes 10 times a day. It just turned off. I suspected it was the battery, so i replaced it, but it didn't stopped. But it only shuts down, when its running on the battery. If i have it on the power plug it runs fine.

I looked at the diagnostic data and saw a lot of ResetCounter entries with exact that time when it crashed starting at that day when a replaced the battery. All the days before i replaced it were filled with LowBattery entries like this:

Incident Identifier: 88437E57-EDCB-46D0-BF4F-ED80CD72C765

CrashReporter Key: 444932e96edba90279b56e6bbc65a6bf3bfb6334

Date: 2015-02-22 13:33:10 +0100

OS Version: iPhone OS 7.1.2 (11D257)

SpringBoard: com.apple.springboard.idle NoIdleSleepAssertion == 255, held for 00:00:41

Hardware Model: N53AP

Awake Time: 04:15:50 (15349)

Standby Time: 28:00:28 (100828)

Partial Charge: 1

Capacity: 0

Voltage: 3667 mV

After replacing the battery the ResetCounter entries started. Here is an example entry:

{"name":"Reset count","bug_type":"115","os_version":"iPhone OS 8.1.3 (12B466)"}

Incident Identifier: A01C9870-64C5-46B4-A4B3-35029BE0CBD2

CrashReporter Key: 444932e96edba90279b56e6bbc65a6bf3bfb6334

Date: 2015-03-01 16:08:41 +0100

Reset count: 0

Boot failure count: 5

Boot faults: rst vdd_under

Boot stage: 80

Boot app: 2681261667

Has anyone an idea? I searched a lot about "rst vdd_under", but never find an answer except that i should replace the battery. Should i replace it a second time (I think it isn't the battery particularly because i just replaced it). But vvd_under sounds to me that the iPhone recognize a too low voltage.

I already restored iOS, but that didn't help.

Christian

Answered! View the answer I have this problem too

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Bad batteries are a dime a dozen. Start with a new new battery and go from there.

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Im having the exact same issue at the moment. replaced battery just over a month ago. do i really have to replace the battery again? :(

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I have similar behavior. Happens more when in my pocket.

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Man I'm havin the exact same problem with my iPhone 5. My iphone also Never crashes wen its plugged in. But wen I m out & about it randomly crashes, than I turn it on with the button on the top right & it almost always turns on. & sometimes wen I can't turn it back on. I have to wait till I get home & plug it in. & wen I do plug it in it turns on right away with the apple logo. Man I am so sick of this BS. I pay like $75 a month for this piece of S H I T & its not even working half of the time. & they won't give me a new iPhone. Or even a deal. I just have to fork over another $1000 just to get back online, or just to be in touch with the world. Sometimes I think they mess up our phones on purpose just in time for a new contract, so we R forced to buy a new phone & a contract. & be stuck for another 2 years. Until they start this whole process all over again.

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I have the same.

I solve it by stop auto brightness

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Im having the exact same issue at the moment. replaced battery just over a month ago. do i really have to replace the battery again? :(

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Have the same here.. I replaced my iPhone 6 Plus battery and now my crash report show me the same message... I`ll try disable auto brightness

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Christian will be eternally grateful.
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