Hello I purchase the sidekick 4g and its been great and I'm enjoying the phone theirs some problems with it like the force closing and etc anyway when I'm home using my sidekick I have wifi and I could go on the internet and stuff but when I'm in school I don't but I have bars and I'm wondering why I can't use the internet do I have to get a app or thiers something wrong with settings or something do my phone only goes online with wifi or something else.