i recently bought from someone a w810i, and i noticed that my battery lasts about 1.5 days at the most (apart from this the phone works fine). is this normal (should i buy a new battery)? how long does the battery last in this phone? and another strange thing: let's say that my battery has 85%; if i play a song or do something, the battery increases to 90% or more. what does this say? i'm pretty sure this isn't normal. should i flash it?

My battery lasts for about 2.5 days on full use,haven't tried how much it lasts without use of phone...
My battery empties faster and shows less percent when playing music but when music is turned off it comes back to normal imo it is not something serious
p.s as about buying new battery i wouldn't bother! cheers

done a bit of reading in the forum and saw quite many topics on w810i battery, many complains. my question is: is it a firmware problem (in this case i'll flash another vers.) or a hardware problem (and in this case i'll smash my phone with a hammer)?

i have r4ea031(this is all i know cause i don't have a cable yet), no memory card and the phone discharges that fast in standby mode, i barely use it.

i suggest u to buy a new battery.. plus the price nowadays is cheaper!
but if u still want to flash it..i'll not bother u