I have Infinix S2Pro, when the battery is about 45% the phone switches off, what could be the proble

[Pinky Jaber]

I have Infinix S2Pro, when the battery is about 45% the phone switches off, what could be the problem?

 

[mikedt]

Sounds like could be the battery is knackered, and needs replacing.

 

[lunatic59]

I'm having a hard time finding a replacement battery for that phone. You might have to go back to the shop where you bought it.