[Q] s4 i9500 octa battery indicator not accurate

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Senior Member
Jan 8, 2012
Hi guys my S4 battery indicator is not accurate

from 100 to 80% it drop very fast then on 80% it drop slowly, sometimes the number go up/down itself ( 2-3%)

My S4 is stock 4.4.2 no rooted and i already tried with hard reset + battery calibration ( empty battery until 0% and charge to 100%) without any success

If you have encounter this problem before pls share......

Btw this s4 is second hand and it seems the battery doesn't have mfd imprinted on it but still it can do NFC transfer , is your battery ( the one that come with the phone) doesn't have any mfd imprinted? thx