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In the process of using iPhone, some users have found that when locking the iPhone screen, the lock screen sound will be louder and softer, and this lock screen sound cannot be adjusted through the volume buttons and the control center volume bar.
If the iPhone lock screen sound is suddenly loud and sometimes soft, please first rule out whether it is caused by a system bug. The system bug problem can be solved by flashing the phone.
If it is a system bug problem, you can try the following methods to solve it:
1. Enter iPhone settings , then in "Wallet & Apple Pay", turn off "Double-press the side button" to use Apple Pay. For users who don’t usually use Apple Pay, you can try turning off this switch.
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