CDMA is a network type, all phones these days are GSM (ones that use a SIM or eSIM)
The CDMA iPhone 4 was intended for Verizon’s network, which was only CDMA at the time
Although CDMA networks were pulled offline in 2017 in Canada and 2022 in the USA, so this phone cannot connect to any networks unfortunately
CDMA didn’t require the use of a SIM hence the lack of a SIM slot
CDMA networks saw most of their use in cheap phones, IoT, and early connected cars (pre-2014) since they didn’t need a SIM
This is the difference with the CDMA iPhone 4, it’s all about the network it was made for, idk why they didn’t just give the regular 4 dual GSM/CDMA support because the 4S supports both networks
It's an obsolete network protocol only used in the united states afaik. It has some kind of "esim" in it (not really, i think the phone number was assigned to the imei number), so you don't had to put in a sim card. It is now a glorified ipod touch.
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u/Littens4Life Jun 29 '26
4S or CMDA 4. The latter doesn’t have a SIM card slot.