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Hi,
I have got the same problem after ota update to UMIDIGI Z Pro.V7.01_20170605_20170605-1620 .
After WIFI or sleep mode no more cellular data connection. The phone has to be rebooted to gain connection.
APN is correct.
Country: Germany, Provider:Vodafone
Do you work on this issue, when can we expect a solution?
How is rollback possible without loosing data?
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