Is my SIM card GSM or CDMA?

In the About (iOS) or Status (Android) page, scroll down and check for a MEID, ESN, or IMEI number. If your phone has a MEID or ESN number, it uses CDMA, and if it has IMEI, it uses GSM. If you see both, that means your phone supports both GSM and CDMA networks.

What is GSM and CDMA unlocked?

A noticeable difference is that with a GSM phone, it can be unlocked so users can switch between carriers easily. With a CDMA phone, it’ll be locked to a carrier and won’t use a SIM card. Instead of an actual SIM card a CDMA phone will be linked to the network via a phone number.

Can dual SIM phones be on different networks?

Can I use multiple networks on a dual SIM phone? You can technically use two different SIM networks on the same phone. But, like with a single SIM, some phones are locked to the network provider. So you’ll need to take this into consideration when buying the phone.

What is GSM CDMA?

SIM cards: Before the advent of 4G LTE, the obvious difference between GSM and CDMA devices was with regard to the SIM card. GSM handsets came with a SIM card slot, while CDMA phones did not. In other words, CDMA is a handset-based standard, with a phone number linked to a particular device.

Is CDMA slower than GSM?

GSM’s high-speed wireless data technology, GPRS (General Packet Radio Service), usually offers a slower data bandwidth for wireless data connection than CDMA’s high-speed technology (1xRTT, short for single carrier radio transmission technology), which has the capability of providing ISDN (Integrated Services Digital …

What is GSM and CDMA network?

CDMA stands for “Code Division Multiple Access.” GSM stands for “Global System for Mobiles.” They are 2 radio networks used by wireless carriers. If the GSM/CDMA divide has popped up on your radar, it’s likely because you tried to transfer a phone from one carrier’s service to another and encountered roadblocks.