Sorry for the trouble caused.
Could you please first tell us your Aliexpress order number?
Regarding your issue, it maybe the android system problem, would you mind try to do the factory data reset to check?
Here is a tutorial video for your reference.
https://www.youtube.com/watch?v=vPI52QXAJDs
If it does not help, please send us the current system information.
We can send you the firmware and mcu if in need later.
RegardsStatistics: Posted by Jammy — Tue Nov 15, 2016 5:55 am
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