[Micromax A310][at 50% battery , sometime my device shutdown suddenly, how to fix it]

[kotak29]

[Micromax A310][at 50% battery , sometime my device shutdown suddenly, how to fix it]
already do calibrate and wipe davlink and cache but not fix at all, and i got flickering on my screen. how to fix it?

 

[[email protected]_Rocker]

what OS are you using ??
i suggest you install a fresh copy of OS,then try calibrating the battery via any app or by manual method.