Lock Signal Bug

[almuarifmardika]

ZF Model: ZB631KL
RAM: 6G
Firmware/APP Version: WW-15.2016.1812.179
Frequency of Occurrence: phone can't lock the signal from dial *#*#4636#*#*
Rooted: No
APP Name:

after iam update to WW-15.2016.1812.179 .. signal Low and cant lock the signal... any people helping for fix it ?

[dikagabteng123]

Gw rasa gk bakal update soalnya bakal keluar asus zenfone max pro m3