Hi, I've ended up with an S5830i as my main phone for a while until I can save up for something better - getting a phone was a bit of an emergency situation as I didn't have one for a few days and had no way to contact the outside world. I'm aware the phone is a bit dated... (2011?) and the battery is really really bad, I did find some "unofficial" batteries on Amazon but they were for the non-i version, so my question is whether an S5830 battery will work in a 5830i? P.S. I'm aware of the risk I'd be taking with an unofficial battery, but it has good reviews and I wouldn't leave it charging while I sleep or anything silly like that.