Who says how to check whether the landline is telecom or Unicom?

1. Generally, different landline numbers in each region are also semi-colon, and different numbers belong to different operators. 2. To know the operator of the number, you can directly dial the customer service number, and then press to consult the customer service after connecting, and you can call 1 or 11. 3. In most cases, the landline of telecom is wired, and the landline of Unicom is wireless. GSM(2G)/TD-SCDMA(3G)/TD-LTE(4G) used by China Mobile; China Unicom uses GSM (2g)/WCDMA (3g)/TD-LTE (4g)/FDD-LTE (4g); China Telecom uses CDMA 1x (2g)/EVDO (3g)/TD-LTE (4g)/FDD-LTE (4g). For domestic operators, as long as it reaches 7 modes, namely GSM/TD-SCDMA/WCDMA/TD-LTE/FDD-LTE/CDMA 1x/EVDO, it can be called a full netcom model.