HTC mobile phone (telecom card), unable to connect to the network, unable to make phone calls and send text messages. What's going on here?

Hello, first of all, thank you for your support to China Telecom. According to your description, you can log on to the online business hall-self-service-phone bill inquiry to find out whether you owe money. If you don't owe money, you can restart your phone or restore its factory settings. If it still doesn't work, you can take the purchase voucher to the local HTC mobile phone after-sales service point and ask the staff to help you repair it.

If you need to check the bill and pay the phone bill, please visit the online business hall of Anhui Telecom. Wish you a happy life!

I hope my answer will help you and be adopted by you!