My phone keeps restarting continuesly, won't stop untill i plug it power

[Adiyarima]

I've changed my battery then the problem is gone, but after 10 days the restating problem continues. When ever my battry is below 50% sim 2 network use to be off, showing emergency call only then after few minute the network will be back.

 

[Rowlette]

Replace your charger and/or micro USB cable.