yahoo mail wont be a problem, i have it also. As far as apps goes i have a few functional apps and a few games. Poynt i love, you can find anything with it from people to restaraunts and cheap gas and also events happening, very easy to use and works with the maps and gps. Picsay photo editor for photo editing is the best so far i see. color note for notes. cant go wrong with Pandora or tune In radio. DON'T down load any task manager or killers you don't need them they will do more damage then help. twitter or facebook but the phone has that already. the phone has a decent weather widget connected to accu weather but if u want an app i like weather bug but it got a little buggy on me so i deleted it. lookout mobile security is great too. there are thousands of apps available it just depends on what you need or want then just go and look for them and read the reviews. for me the rule of thumb is it has to have at least 4 out of 5 stars the more the better.