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Hello i have problems when my umi super is in 4g ,dont know why nobody can call me ,the phone appears as busy or its not disponible and i recieve the sms by orange with the lost call info. I was done a factory reset and with the latest ota and have the same problem.
If i select 3g and no 4g prefered and stay in 3g mode dont have any problem and calls coming ok.
You have this problem? Please someone try it.
Sorry for me english hope you understand.
Please help.
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