Firmware infos:

build date : 2019年 01月 08日 星期二 14:26:42 CST
build id : O11019
build display id : Unitel_U902_V04_20190108_1431
platform : MT6739
product brand : Unitel
product device : U902
product manufacturer : Unitel
product model : U902
os version : 8.1.0

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