Well I just received this letter from my wireless carrier. It appears I can get a new mobile phone to replace my old one. So I will go get one, but first want to know which phone I should get? I have no idea what GSM stands for but will google it. Should I wait and buy an iTunes phone instead? I'm out of the loop on cell phones, so which models I should look into? I'd like long battery life most importantly, and a camera model would be nice but not necessary.