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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。

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Restore problem on replacing battery

I replaced the battery in my 4s and then went to charge it it told me to connect to iTunes and when I did told me to do a restore and update whent through the process and then it has a error code of 21 and can't do the restore any suggestions?

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Android 维修工具包

一个新的屏幕或电池就在一个套件之内。

现在开始购物

Android 维修工具包

一个新的屏幕或电池就在一个套件之内。

现在开始购物

3 Answers

Most Helpful Answer

Error 21 is a battery fault had it many many times before.

The battery you got is defective

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check the voltage of the battery in case it was flat?

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I've found a guide about "how to restore iPhone 4s after iOS 8 update".

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Nick Putnam will be eternally grateful.
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