CDMA vs. GSM: What's the Difference?
CDMA vs. GSM: What’s the Difference?
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CDMA and GSM, the two most common mobile phone technologies, offer an insurmountable barrier. They’re the reason that old AT&T phones won’t work on Verizon’s network and vice versa. But, in the end, what does CDMA vs. GSM imply for you?
CDMA (Code Division Multiple Access) and GSM (Global System for Mobiles) are abbreviations for two older radio technologies used in cell phones (also known as 2G and 3G). This article was first published in 2012, and it was updated during the 2010s, when it was critical to understand the differences between these two technologies. However, by 2022, it will be imperative to abandon CDMA and GSM. Those networks are being phased out! If your phone only supports 2G or 3G, you should upgrade to a 4G or 5G phone as soon as possible.
AT&T has already decommissioned its 2G GSM network, and it just announced that it will decommission its 3G GSM/UMTS network in February 2022.
T-Mobile will discontinue 3G GSM/UMTS service in July 2022. It hasn’t established a timeframe for when 2G will be phased out, but it has drastically lowered its coverage and quality.
On March 31, 2022, T-Mobile will shut down the 3G CDMA network that certain Sprint and Boost users use.
Verizon’s 3G CDMA network will be decommissioned on December 31, 2022.
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