What is CDMA?

CDMA is one of RedPocket Mobile’s wireless network options.

CDMA is one of RedPocket Mobile’s wireless network options. RedPocket’s CDMA plans work with GSM-unlocked devices (GSM means the device can accept a SIM card, unlocked means the device can work with any wireless carrier). RedPocket’s CDMA plans also work with devices locked to the Verizon Wireless network. 

GSM phones initially from other carriers like T-Mobile and AT&T but that have since been unlocked will still work with this network. GSM phones locked to other carriers, like T-Mobile and AT&T, will not work with this network. See our GSMT and GSMA networks, respectively, for other plan options. 

Isn’t CDMA different from GSM?

You should know two things about CDMA: what it means from a technical perspective and how RedPocket Mobile uses it. 

There are two types of cell phone technology: CDMA (Code Division Multiple Access) and GSM (Global System for Mobiles). CDMA cell phones store the most important service information (the phone number and service plan details) directly onto the phone, while GSM phones store that information onto a SIM card, which is then inserted into the phone. 

Another major difference between CDMA and GSM is that GSM phones allow you to make voice calls and transmit data simultaneously, while CDMA phones do not. With CDMA, calls and data cannot both be used simultaneously. These standards and limitations applied only to the mobile network's 2G and 3G versions. 

As you probably know, 2G and 3G are a thing of the past. Most devices are now 4G LTE compatible, and many even use 5G! With the introduction of 4G LTE, things changed. For LTE to work, all phones supporting this version of the network had to allow for voice and data to be transmitted simultaneously. After the introduction of 4G LTE, even traditional CDMA carriers like Verizon Wireless had to start offering GSM phones – phones that transmit voice and data at the same time and accept SIM cards. 

This is why, even though the plans we sell and support are GSM, RedPocket Mobile's network is referred to as CDMA. 

Getting a CDMA SIM card and plan

If you’re interested in a CDMA calling plan, visit redpocket.com/plans/plans-cdma. RedPocket’s plans can be activated within 90 days of purchase, giving you time to make the switch from your old wireless carrier. Plus, RedPocket plans can be upgraded, downgraded, or canceled at any time without hassle (we offer a 7-day return policy). 

Visit redpocket.com/plans/plans-cdma to select a CDMA plan.