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too many switches to 3g

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giofai Post time 2017-10-04 19:41:59 | Show all posts |Read mode
Hi, I have a problem with my Mars Pro. Basically, in the office, several my colleagues have others phones using same operator. They can use 4g without problem, I just use 4g for some seconds than Mars Pro switches on 3g and remains there for long time. To recover 4g signal I need to force that usage using hidden menu. This happens also out of office where the signal should be more stable. i have installed two updated received until now, the build installed is Mars_pro_20170907.

please help me
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