15 minuten - 1 uur
My old battery shuts down the phone and plays all the time and running time was one hour sometimes more.
20 minutes all fixed up.
For the people with no sound and or power button problems . Make sure that all connections are in place and secured. I had similar problem before where power button was not working. Please do not force opening and do not force anything, be gentle. Otherwise you will damage the phone connections and you can throw your phone into the rubbish bin.
Fixit = Genuine