this is very good for the price. good fit- perfect (some china battery copys dont fit btw). good as a back up NOT as permentent and the battery ;ife is not as good a the real thing. about 60 -70% of the battery life of the real thing.
but im a hard user- music, internet, games at the same time
over all-
good as a back up not permanent.
if u need it 4 permanent get the real thing directly from nokia.
ps- i only use it as a back up- my tip aways have a back up battery- espiecally for trips