.. i have the 45$ voice and data with the 1000 sent message option.. the reason im asking is never got the call dispay because that is 8 a month.. but i hear there are add on plans for 15 and 25$ that give calldisplay and unlimited text.. now my question is there just a cheap voice plan and a cheap data plan i can get so i can get one of these add ons and keep it around the current 52 bucks?