i just calibrated the battery with "advanced battery calibrator" app. in the begning of the process it noticed that do not turn on phone unless the fully charged. i turned off the phone but it automatically turned on; i calibrated with that software again and turned it off, but it automatically turned on again. i turned it off and; after fully charged i wanted to turn on the phone: but the phone so quickly turn on & off. the LG logo just blinking. when i attach the charger it turn on and i can use the phone and it show correct percent of battery. but when i remove the charger cable, it turn off after 10 second (only 2 amp fast charger not 1 amp). i upgrade its rom but still the problem exists.
can anybody help me?

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