With the battery life of UMI super not being good, I installed Accubattery app trying to calibrate it and probably get full use of the battery. However, the app cannot determine the battery size and also cannot determine the mAH usage or discharge rate. I infact have to manually set the battery to 4000mAH. But still calibration cannot be done.
This apps not calculating correctly current flow in battery since two last battery apps updates.
If you want see correct current flow or voltage you need go to engineering mode.
Open call dialer and type in *#*#3646633# *#* then slide to - log and debugging - battery log.
Also you can slide to hardware testing - power - charge battery