I was able to receive and send one text that actually worked, after dinking with it trying to get to work. Would not repeat, quit trying.... and last I looked the S3 doesn't support bluetooth texting, so guess that's why. C'mon Samsung, get it together! Do love this phone otherwise
I've got some tips to help extend your S3's battery life and keep it from overheating, if you've got those problems.
First thing: Turn the automatic screen brightness and screen rotation off.
Second: Turn off vibrate - Phone calls, notifications, apps, haptic feedback, everything.
Third: After every restart, go into settings -> battery -> and you should see "Media" using the most power. Select "Force Stop". This apparently is a programming issue, and the only way to resolve it, is to select force stop after every restart.
Fourth: S Voice Settings (open S Voice, select settings) and turn off Wake Up Command. If you look, there is a note stating "this may drain your battery".
Fifth: Under Google location settings, turn of access location when not using Google maps. You can also toggle off GPS, Wi-Fi and Bluetooth from your pull down menu when they are not in use. Your screen brightness is a big drainer, set brightness no more than 1/2....mines set at 1/3.
Back on subject lol, my S3 text messages were read to me while driving my 2013 Subaru XV. Can't believe a year newer, more tech'ed up vehicle can't handle it.