salam brother
Follow this Methods To repair
this problem

Method N°1
1-Replaced the handset

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Method N°2
1- Check the link between Sensors headset and connector CN702


NHMh8 55ue 571597337
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Method N°3
2-Cheek this topic graphics of the Department of audio in the device
2-1- Replaced Capacitor C531.C532
C531=C532=47N
2-2-Replaced The Speaker Amplificator U500
2-3- Replaced The Analog Switsh U501

Edd2K 7oI8 958949540
x00MT mXr1 331743207