Why my iPhone7 after charging dons't work again?

Question

iPhone 7

2016年9月16日に発売。モデル番号は1660, 1778で GSM かCDMA があり。/ 32、128、 256 GB / 色はローズゴールド、ゴールド、シルバー、ブラック、ジェットブラック

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Mohsen @d5tor

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投稿日: 2018年2月12日

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Why my iPhone7 after charging dons't work again?

Device: IPhone 7 Red 128GB

IOS: 11.3.3

Model: A1778

#the problem:

After the power outage of the battery as normal ..

I connected the iPhone to the charger (from Anker)

Then the charger icon works ...

While waiting for the apple screen to start operating, the power suddenly went off and the phone did not work after it

I have repeatedly tried to pair with iTunes but not to use it, a dead phone

I tried to enter the DFU and the back position

But there is no response

You also reconnect the cable to the battery by opening the device and removing the cable and then reconnecting it, also not useful

Does anyone know the solution to that?

Has anyone encountered the same problem?

#The following attempts were made to turn on the phone and all did not work:

DFU
Recovery Mode
Open the device and disconnect the battery and reconnect it again
Try and recreate what was previously done with the iTunes using the original Apple cable

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Ben @benjamen50 評価: 159.7千 Mtwo Perform 11 191 368 · Answer 1 · 2018-02-13T06:38:49-07:00

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Ben @benjamen50

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Mtwo Perform

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191

368

投稿日: 2018年2月13日

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So tl:dr probably tristar chip needing microsoldering replacement if the apple logo does not appear with the battery unplugged but charger plugged in.

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Dennis @bandin 評価: 1 3 1 · Answer 2 · 2018-02-13T06:10:37-07:00

Hello, DFU & iTunes will not works if battery is empty at all!

So, looks like you need to charge battery first.

If battery is empty at all then better use original(sometimes MFI may works) Lightning cable with original Apple charger for your device, or connect it to Mac USB port and wait! Wait for few hours minimum to 24h, if device is OK usually it start charging, if it do not show charging icon anyway wait for 24h. If it not powers up anyway, then try iTunes or iTunes&DFU to recovery iOS.

If it not helps, then battery may be locked and you need remove it and activate with Battery Activation Tool and charge it with Lab PSU or Smart charger or replace battery if it dead at all.

Here is a video how to do that -