Hi
skylegend720Thank you for your quick reply. Sorry for any inconvenience it may cause, kindly provide the information below:
1. Couldn't the receiver hear you clearly (like signal unstable, hissing?) or only facing low volume?
2. Did you face the same issue with earphones, the speaker or just normal calling?
3. Frequency of occurrence
If you'd like to use Android 10 system, could you help me to update your device to V17.0615.2005.25 again, and perform the Factory Reset? Does the sound issue remain the same?