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I just got my Umidigi Crystal 4G 64 GB and I have a technical problem:
If I have the mobile data network activated it works fine, but once I arrive home and I turn on the wifi, the mobile data stops working.
Once the phone switches to wifi, when I leave home the mobile data network isn't working anymore. I have to switch the phone off and the mobile data on and then it works again.
The same way it happens if I turn wifi on and mobile data off. Once I switch mobile data on, it will not work until I switch the phone off and restart it.
I think is a software problem. Does anyone have it? Please advise!
Ina
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