I am the proud new owner of a Cell phone module that plugs into my Handspring Visor PDA, giving me all the benefits of a cell phone and PDA without needed to cough up the cash for a new PDA. The phone uses the GSM 900/1900 standard and has a neat little place for me to switch the SIM card from my existing phone.
I recently learned that my current carrier NEXTEL uses something called IDEN and does not work with GSM (explaining the failure to plug-and-play). I had already planned to go to Verizon, but they use something called CDMA. And further investigation reveals at least two other formats used by other major carriers. Does anyone know how to go about converting a phone (in this case, my GSM-based PDA plug-in) to another network format? I am not scared of difficult projects, and the word 'impossible' only provokes me to prove you wrong.
I realize that this may be impractical, but the plug-in was a free gift and a new PDA phone is $400 (US) WITH a two year contract ($650 without) AND will be specific to whatever network my carrier of choice uses, meaning when I decided to drop them in 6 months for another money-grubbing whore of a carrier, my phone most likely will not work and I will be in the same predicament - pay through the nose for new hardware, or carry a separate phone and PDA.
I realize that this may require taking the 'free phone' I would get with new service and canabalizing it for the parts.
-- Doug-Doug The Mighty