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Actually i think most SMS is handled via "WAP" these days, meaning that it is carried as a short duration data connection rather than as a special packet in the
by digi_owl 10y ago
Actually i think most SMS is handled via "WAP" these days, meaning that it is carried as a short duration data connection rather than as a special packet in the cells control channel (GSM, dunno about how CDMA implemented it).
- joecool1029 10y agothe GPRS setting is blocked on featurephones. Still opts for CSD sending there. Newer devices send over 'IMS' (which is voLTE, and also part of HSPA+) It was a funny loophole to get unlimited SMS on T-Mobile back when they just changed name from Voicestream.
- digi_owl 10y agoI guess it depends on where in the world one lives. I'm not American, and thus my phone is free of carrier tampering. I even learned about the SMS over GPRS (thanks) thing because a relative of mine once owned a phone where we had to turn it off to actually get reliable SMS delivery, as it defaulted to GPRS mode.