Why doesn't my phone boot or start without battery with power cables

Question

iPhone 4S

iPhone4S是第五代iPhone。网络制式为GSM/CDMA ，存储容量有8GB、16GB、32GB、64GB可选，机身颜色有黑色、白色可选。维修iPhone4S是容易的，需要耐心，用到的工具有螺丝刀、撬棒等。

20 个问题查看全部 | 13配件购买

vikas singh @vikassingh3963

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发帖于: 2017年1月4日

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Why doesn't my phone boot or start without battery with power cables

Actually my phone flashes Apple logo and then restarts the same thing continuously till battery is drained and it doesn't start. Don't know what happen to phone. Got up in morning saw my phone when connected to charger it showed battery symbol with 3 red bars in it. After an hour of charging this loop thing came up. Tried all method of restoring/updating through iTunes but phone gets restarts when download bar appears & iTunes throws error 9. Tried changing battery but no use and also tried heating phone that too no use. Actually I have two issues :

1. Why is my iPhone in continuous boot loop.

2. Why doesn't my phone boot or start without battery with power cables.

Came to know know about 2nd issue while I was searching solution for my iPhone boot loop and then asked my friend his iPhone 4s and took his battery in my phone but didn't work then with just power cable connected (without battery)to my friends iPhone and it started to show Apple logo. So I tried to do it on my phone without battery n just charger but no logo came. So help to revive my iPhone back to life. YouTube link : https://m.youtube.com/watch?v=66aTUgxPx_.... Help me Thank You.

已回答！ 显示答案我也有这个问题

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It's definitely not an software issue and probably hardware one and I think it's an nand issue. What u guys think?

由 vikas singh 完成的 2017年2月12日

iPhones don't work without batterys

由 Ayaan Jamil 完成的 2021年5月4日

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已选择的解决方案

Ben @benjamen50

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Mtwo Perform

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发帖于: 2017年2月12日

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1. Why is my iPhone in continuous boot loop.

Battery has gone faulty or baseband chip going bad (This is rare though). Or battery connector needs fixing if not providing a proper connection to the battery.

2. Why doesn't my phone boot or start without battery with power cables

Because the phone will refuse to boot when a battery is connected. It will only boot if it can detect a battery installed. Before in older iOS you could do this without battery plugged in and charger plugged in.

For iTunes restore error 9:

Battery has gone bad and is preventing the phone from restoring.

Does the iPhone switch off immediately when you unplug the charging cable with the apple logo displaying?

If yes then try replacing the battery with a original quality one if possible. Some aftermarket batteries prevent the iPhone from restoring.

Since the restore attempt failed with a error code. The firmware on the phone will most likely not be able to boot since hardware failure interrupted the restore process and did not complete the restore.

So you will need to address the hardware issue first before restoring the system software again.

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Beat me to the punch...

由 iMedic 完成的 2017年2月12日

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