CDMA

But a section of the iPhone global services guide on SoftBank’s website, under the header Sprint’s “CDMA Network Shutdown,” says, “due to the circumstances of Sprint, the date has been postponed from March 31, 2022 to May 31, 2022.”

When we started with 2G cellular, the big question was the capacity of CDMA: can we make sure that everybody has the ability to have a cell phone?

It was Lucent, for example, that helped introduce Code Division Multiple Access, or CDMA, a mobile technology that promised to improve the capacity of wireless carriers.

Nextel’s push-to-talk phones weren’t designed to communicate with Sprint’s network, which was built upon “code-division multiple access” wireless technology, or CDMA, so Sprint had to drive more customers onto new devices.

Here we go again with 2 different platforms: T-Mobile uses GSM whereas Sprint uses CDMA.