- If the battery is no alert "Low battery warning" then spend the energy from the battery until the cellphone is off. Press power on again, and again, until cellphone absolutely loose all of battery energy.
- Take off battery. When cellphone already on no battery on, press power button for 1 minute or more. (Do not less than 1 minute) The purpose is to loose battery backup energy.
- After did step 2, now place battery back to cellphone. Charge cellphone while cellphone in off condition. Charge until battery in full condition. Oh, don't use external charge, use charge directly via cellphone itself. After this, believe it or not, battery in prime and good condition as new cellphone battery.
Ok then, Good luck to try!
