Battery calibration question

[vukman02]

Hey everyone. What's the best and the easiest way to calibrate a phone battery without using apps/without rooting the phone?

Thanks! 

[adamlee]

*#0228# charge device to 100 and then reset fuel gauge. Then drain to 0% and charge to 100% again

[vukman02]

Hey Adam, thanks for the quick reply.

I've read somewhere on the internet that people have been having issues after using *#0228#. Some said it left their battery percentages stuck at the same percent they reset the fuel guage at for quite some time after using the battery. I don't know if it is safe to use tbh.