In the US, AT&T as well as T-Mobile phones use GSM – and most of the rest of the world uses GSM as well. CDMA in the US is Verizon, Sprint and US Cellular. You need to read up on the subject.
Read moreWhat US GSM phone?
The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation (2G) digital cellular networks used by mobile devices such as mobile phones and tablets.
Read moreDoes the US use CDMA or GSM?
Of the two, GSM is more widely used around the globe, with availability in more than 200 countries. While CDMA is used widely in the U.S. , it is less common elsewhere — most estimates pin the portion of global wireless networks using CDMA at less than 20 percent. The Verizon network is a CDMA wireless network.
Read moreWho is SBC owned by?
SBC Telecom, Inc. SBC Telecom, Inc. d/b/a AT&T Small Business is a CLEC owned by AT&T that offers local telephone service outside the AT&T Bell Operating Company regions.
Read moreIs SBC and AT&T the same company?
SBC Communications Inc. and AT&T embark upon a historic industry merger , marking the beginning of a new era of capability, innovation and convenience in global communications and entertainment services. In October, SBC announces that the combined company will be called AT&T, Inc.
Read moreWho took over SBC?
One of the new companies formed by the breakup of AT&T was Southwestern Bell Corporation . This company grew continuously over the years until it acquired AT&T in 2005. After this acquisition, SBC took on AT&T’s name and branding, and this is the company known as AT&T today.
Read moreDid AT&T buy out Sbcglobal?
SBC Agrees to Acquire AT&T for $16 Billion .31 Oca 2005
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