Originally Posted by Rose4uKy
But i thought with 3G off text can still be sent and gotten and calls can be gotten. I don't know but I just kow with the 3D I didn't have this problem. And it's not all the time just sometimes it's weird.
Originally Posted by EarlyMon
The link I posted earlier said that the 3G issue was with mms, not sms.
I recall that Handcent had an option to send longer messages via mms, and I believe that it does so when multiple recipients are involved.
Do those apply?
I tested on the Evo LTE with SMS (not MMS):
1) All antennas on (BT, WIFI, "Mobile Network") texts send (obviously)
2) With WIFI off and "Mobile Network" off (and within the Mobile Network settings, "Domestic Data" and "Domestic Voice" off), texts send -- lending evidence that texts are not 3G dependent but instead are ok on 1xRTT.
3) With "Airplane Mode" on, texts do not send.
4) With "Airplane Mode" on and Wifi turned ON, texts do not send. Evidence that regular texts will not send over Wifi. However, Google Voice texts (that solely rely on data) do send.
Based on this, I'm pretty sure SMS is transmitted by 1xRTT only