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Edited by kleewgc at 2017-6-10 15:34 \n\nAfter upgrading Umi Z pro to 7.1.1, over all performace became much better.
BUT I have found a big and serious problem.
I am using Z pro in 4G environment, before upgrade, call function had no problem.
But after upgrade, when I talk, my counter part can hardly hear my voice (extremely small and I have to literally shout).
Definitely it is not a mic problem since I don't have any problems when I use other mic functions - i.e. recording, SIP phone, etc.
This is a highly critical problem as I can't hardly communicate when I make a call after upgrade.
Is there anyone experiencing similar problems?
Now I have solved thsi problem.
I did factory reset and this problem has gone!
And after factory reset, overall performance has improved significantly/
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