The telecom card can't get online and can't receive short messages.

If you use a vivo phone, you can refer to the following:

1. If there is no HD icon in the status bar, please contact the operator to start the VoLTE service or connect to the WiFi network;

The telephone number of the operator is 10000 (China Telecom).

2. When using the dual card, you can enter the settings-dual card and mobile network-and open the "Internet access during call/intelligent switching data card". After it is turned on, you can use the data network of the secondary card for a short time when talking;

3. If the location of the 4G/5G network is unstable, it is recommended to try again in another location;

4. When the 5G dual-pass model needs to realize sub-cartoon voice in a part of the 5G frequency band, use the traffic of the main card.

To realize the dual-card dual-pass function, the following conditions need to be met: the mobile phone supports dual-pass; Both mobile phone cards are registered to 5G? SA network; The call is made under VoNR; Two mobile phone cards are registered to any frequency band in n 1/n28/n4 1/n78 (some models, such as S 16Pro, only need the main card to register to the corresponding frequency band of SA network).

At present, the models that support intelligent switching of data cards are: iQOO 1 1S, X90s, X Flip, X Fold2, iQOO 1 1, iQOO 1Pro, X90 series, X Fold+ and iQoo65433. X80 series, X Fold, X Note, iQOO 9/iQOO 9 Pro, X70 series, iQOO 8/iQOO 8 Pro, X60 series, iQOO 5 series, X50 &；; X50 Pro。

If you have more questions, you can go to official website /vivo Mall APP-My-Online Customer Service-Sliding Bottom-Online Customer Service-Manual Customer Service for consultation.