I thought that was the main difference between GSM and CDMA (aside from the Tech used in the transition of signal)
that GSM phones has SIM cards and CDMA phones were hard wired.
that why I like GSM. Got a new phone? pop in your SIM card and you're ready to go. traveling abroad? pop in a local pre paid SIM card and you're not screwed by roaming charges... that is if your GSM phone is unlocked.
When I left the states 5 years ago and took my little Ericsson world phone with me (T-28 if I remember correctly) I had to get some blood from a stone but T-mobile did give me the unlocking sequence eventually.
Since then all phones I buy out here are unlocked by default.
In Ep577, Tom seemed a bit surprised to hear that SIM cards were only found in GSM phones. I guess that means he's never been a Sprint or Verizon Wireless customer. ...Lucky guy....
To the best of my knowledge, the Subscriber Identity Module is a core part of the GSM spec. While the CDMA folks could possibly choose to implement a SIM-like technology to their phones, they may not be able to actually make it compatible with a real SIM without licensing the GSM technology. Additionally, what would be the point of adding an ID module to CDMA this late in the game, since it would only be interchangeable with new & future phones?