A:AnswerMany lifeline cellphone networks are CDMA, which is not compatible with GSM. Most lifeline cellphone networks are only compatible with the few low-quality phones specifically provided by that lifeline carrier.
A:AnswerPhone is international in that it can function on any GSM network. Just insert correct-sized SIM card from network you intend to use. As with any phone, international calling capabilities & costs depend on the plan that goes with your SIM card.
A:AnswerPresumably you mean, "Is it..." and not "Isis." That being said, it should work with any carrier's SIM card, because it's GSM unlocked. Cheers!
