Comment by kiwijamo

SMS is very reliable here in New Zealand, even more so than any IP-based systems. I've had SMS get through easily in one-signal-bar situations where IP data was nearly inoperable (especially if I happened to be attached to a 2G GPRS cell). Wonder if SMS reliability is really an issue peciular to certain networks. SMS reliability has been good for me both in NZ and all the foriegn networks I have used in my travels around the world. 4G is very good though in low signal situations so IP based protcols are improving in reliability... Just need networks to hurry up their 4G roll out and turn off their 2G/3G networks.