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Casio phone suddenly can’t make a call

Why can my Casio phone no longer make or receive calls?

Re: Casio phone suddenly can’t make a call
Customer Support

It is important that you are able to stay connected. Your device may be affected by the CDMA network retirement. The 3G and 1x RTT networks are in the process of being retired, and while the network is slated to be retired entirely no later than December 31st 2022, Some areas may lose 3G coverage prior to that as the equipment sustaining the network is decommissioned. You can learn more about the CDMA Network Retirement here: