[https://support.apple.com/en-us/HT201252|Reset your iPhone]
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If it still can't reset the software on your iPhone, that it may be the hardware's problem. The problem probably is the logic board that was broken.
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If it still can't reset the software on your iPhone, that it may be the hardware's problem. The problem probably is the logic board that was broken. Because before you repaired the display not to remove the power cable to cause a short circuit
[https://support.apple.com/zh-cn/HT201252|回复你的iPhone]
如果还是无法完成软体回复及重置，那可能就是硬体的问题。最大的主因應該是主機板的問題
[https://support.apple.com/en-us/HT201252|Reset your iPhone]
If it still can't reset the software on your iPhone, that it may be the hardware's problem. The problem probably is the logic board that was broken.