at first sorry about my English mistakes 
well
from 100% till 40% charge it works good. but at (about) 40% when i play a game or take a video or surf the net etc... LCD shows huge nose and it turns off
after 3 or 4 seconds! and i cant turns it on again
when i want to charge my phone and turns in on after 1 or 2 minutes my battery is 1%!
plz help me
is my battery corrupted?
sorry again about my poor English grammar

well
from 100% till 40% charge it works good. but at (about) 40% when i play a game or take a video or surf the net etc... LCD shows huge nose and it turns off
after 3 or 4 seconds! and i cant turns it on again
when i want to charge my phone and turns in on after 1 or 2 minutes my battery is 1%!
plz help me
is my battery corrupted?
sorry again about my poor English grammar
