Experiences With Gt-sim?

[Przemolog]

Originally Posted by RTuesday

Other than in Mexico, it's the card I find most reliable, especially for SMS.

Hmm, one can expect this. Since Callkey uses SMS call triggering, reliability of SMS is the crucial point of the solution .

BTW, AFAIK the very first roaming prepaid (from Spain? :unsure: ) also used SMS triggering setting up outgoing calls, but those SMSes were typed in the standard way, without sophisticated SIM applications involved .