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Changes for V2.8.8.63970
Date: 2022-10-10 11:56
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*Fixed：
1,Improve the phone software





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Changes for VV2.8.8.85677
Date: 2022-10-09 10:32
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*Fixed：
1.Add the 4G/3G/2G logo in the phone LCD
2.Improve the phone voice quality
3.Add the *#999*# debug info











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Changes for V2.8.7.89df3
Date: 2022-05-06 10:32
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* Fixed:
1.Improve the VoLTE hold



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Changes for V2.8.7.6f5ae
Date: 2022-05-06 10:32
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* Fixed:
1.Improve the phone feature
2.add the G729 codec