1.Go to “My Account” > “Service Management” > “1Card 2Numbers”

2.Select “Number Ownership”;

3.Fill in personal information, including name in Chinese and English, type of identification, and number. Follow the instructions to upload a copy of the identification. The supported types of identification are based on the dropdown list options.。

4.Read and agree to the "Real Name Customer Consent Form," and confirm the submission of the application, which will enter the real-name verification stage.

5.The backend staff will complete the review within three working days. Customers can check the review status in “My Account” > “Service Management” > “Real Name Registration.” If approved, the "Real Name Status" will show as approved. If not approved, we will send an email to the customer, who can update their information using the email instructions.

How can I receive calls and messages after linking my existing China Unicom Mainland number?

Once the linking is successful, you do not need to insert the Mainland SIM card. You can directly receive all calls and messages to your Mainland number on your China Unicom Singapore number.

What happens if I insert my Mainland SIM card back into the phone?

If you insert the Mainland SIM card, the linkage between your Mainland number and China Unicom Singapore number will be temporarily suspended. You will no longer receive calls and messages from your Mainland number on your China Unicom Singapore number.

How can I reactivate the linkage after it is suspended?

To relink your numbers, please call the customer service hotline for activation and restore the one card two number service.

1.Go to “My Account” > “Service Management” > “Value-Added Services”;

2.Select “One Card, Two Numbers Service.” In the details status window, there will be an option to “Unsubscribe.” Click to unsubscribe.

3.After unsubscribing, the ordered value-added services will show a module for “One Card, Two Numbers Service (Expires at Month-End).” Clicking this module will display details, including expiration time.

If the customer wishes to restore the subscription before the expiration time, they can cancel the unsubscription using the following steps. The number will remain unchanged. After the expiration time, the service can only be repurchased, and the number may change.

1.Go to “My Account” > “Service Management” > “Value-Added Services”;

2.Select “One Card, Two Numbers Service (Expires at Month-End),” and choose “Restore Subscription” in the pop-up window.