@wangjun wrote:
It was estimated more than one week that my cell phone can not dial out or receive a call, but it can send out and receive text messages, I switched my sim card to my wife's cell phone for a test, my sim card on my wife's cell phone works without any problem. My current subscription plan is "25$ monthly,3G speed, 1GB data",
Which phone model do you have? I suspect that this could be result of changes to the 3G network. In some areas, you'll need band 2 (1900MHz) to use the 3G network. If you're phone isn't capable of connecting to that network and if your phone doesn't have VoLTE, there won't be any voice service. I suspect that you're wife's cell phone might be using VoLTE for phone calls.
