Neither competition or the already massive profit margins for text messaging have stopped Verizon Wireless, Sprint or AT&T from recently bumping their per message rates to around 20 cents per message (both to send and receive). Just a little over a year after going to 15 cents per message, T-Mobile is now joining the crowd, and will also be bumping their per-message fee to twenty cents starting August 29. Obviously, the move is to get customers to sign up for pricier bulk SMS/MMS plans.