Telecom mobile phones can't suddenly call and send text messages, but they can surf the Internet. What happened? There is no debt.

Hello. First of all, thank you for your attention to telecom products. According to your description, your mobile phone can't make a call. The analysis is as follows: 1 If the phone is out of order, it is suggested that you can back up the important data of the phone and try to restore the factory settings. 2. Or go to the mobile phone after-sales service point and ask the staff to test and debug. 3. If it is within the warranty period, it is recommended to take the warranty card to the after-sales service point for testing and handling. Welcome to visit Guangdong Telecom Mobile Mall to learn about the enterprise platform and ask questions to customer service, or search "Guangdong Telecom Mobile Mall" for the latest preferential models. I look forward to your adoption. Thank you.