Battery shuts down at 25%

Question

I've read that battery calibration apps are only a placebo effect and they do nothing. Is this true? What to do if your phone suddenly shuts down at 25%?


— IMB | Sources

Answer

Battery calibration being a myth was asked here Bought a new battery, do I need to calibrate it? - incidentally by you :-), so yes to repeat, it's a myth (see Izzy's answer that stressed this)



To address shutting down at 25%:




  • If the battery is old or heavily used I would first change the battery


  • Check if the behavior persists in safe mode. If it does go to next step. If it doesn't it's caused by some app you installed (unlikely)


  • Do . If it continues, flash stock ROM (updated if available) or custom ROM


  • If none of these help head to service center get an estimate and choose between repair or replacement of the device



— beeshyams | Sources

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