my pantech duo freezes a lot i called up at&t and told them whats wrong with it they are sending me a new one no charge... maybe if you call tmobile they will do the same
pop the battery out, you just need to refresh it & give it a break.. same as a computer. If you leave them on stand by and never shut them off for days, they start freezing up & go slooooow. Try that, should work! =) Ifnot, take it in to your provider and they can send it in to service..