China Unicom | Data eSIM for Mainland China and Macau
1
Notice:
Effective from August 1, 2026, customers purchasing any China Unicom Hong Kong Chinese Mainland & Macao SIM Card must install the eSIM via a network connection on a mobile phone or other terminal device, and activate it prior to entering Chinese Mainland or Macao to complete the product activation process. Customers are required to arrive in Chinese Mainland or Macao to use the SIM card within 30 days (inclusive of the activation day) upon successful activation. The charge for the SIM card will commence based on the time of entry into Chinese Mainland or Macao (days are calculated based on Hong Kong Time).
Please see the usage instructions at the bottom for detailed rules.
Calculation of Days:
Calendar days (If the user purchases a 3-day internet plan, it will be installed and activated at 10:00 AM on September 1st. This plan will end at 23:59 on September 3rd, China Standard Time (UTC+8)).
Validity Period
The prepaid card is valid for 1 year from the date of purchase. It will be invaild after expiry.
Use of data
●2-Day Data(3GB)/3-Day Data(5GB)/5-Day Data(7GB)/8-Day Data(9GB)：
This card provides 5G/4G mobile data services. Once the total data usage reaches the total data allowance, mobile data service will no longer be accessible.
●11-Day Data(11GB)/15-Day Data(12GB）/30-Day Data(17GB)/180-Day Data(21GB)/180-Day Data(38GB)/180-Day Data(50GB)/365-Day Data(25GB)：
This card provides 5G/4G mobile data services. The high-speed data allowance corresponds to the total amount specified in the selected package, for example: 11-Day eSIM(11GB) corresponds to a high-speed data allowance of 11GB.
*Data services will be suspended upon expiration of the validity period or when the data allowance is used up. Any unused data will be forfeited.
Remarks
●Fair Use of Network Policy
According to the principle of fair use, telecom companies may, at their discretion, restrict data usage for users who consume large amounts of traffic within a short period. Please avoid prolonged video streaming or handling large volumes of data in a short time.
●Internet quality may be affected by factors such as location, terrain, building obstructions, number of users, and weather conditions. Kindly take note.
●Once an order has been placed, it cannot be canceled, modified, or refunded.
Rules for Chinese Mainland & Macao SIM Card – eSIM
1. What notification will be received on the phone after successful activation of the Chinese Mainland & Macao SIM card?
By installing the eSIM via a network connection on a mobile phone or other terminal device and activating it prior to entering Chinese Mainland or Macao, the product activation will be completed. Upon successful activation, the customer's phone will receive an SMS notification from China Unicom Hong Kong confirming the activation. If the customer does not receive the SMS, they can also check whether the SIM card successfully receives a network signal; receiving a signal indicates successful activation.
SMS Content (Bilingual in Chinese and English):
聯通香港：閣下儲值卡現已開啟，請記下您的 SIM 卡號碼 XXX。請新增接入點並設 置接入點名稱 (APN) 為 3gnet 並開啟數據漫遊功能來上網。下載 CUniqGO APP 並 綁卡，可查詢流量、續訂或選購 eSIM： esim.cuniq.com/download-app ChinaUnicom
HK: SIM XXX is now activated.Please record your number. To access Internet, set APN as "3gnet" from your handset, then enable data roaming. Download the CUniqGO APP and bind your CUniq prepaid card to check data usage, renew plans or purchase eSIM: esim.cuniq.com/download-app
2. Will the Chinese Mainland & Macao SIM card start charging after activation outside Chinese Mainland?
Activation outside Chinese Mainland only means that the SIM card can be used smoothly after entering Chinese Mainland, and will not incur immediate charges. For example, if a customer activates a 5-Day Chinese Mainland & Macao SIM card on January 1, the customer must enter Chinese Mainland or Macao to use the SIM card on or before January 30. If entering on January 30, the 5-Day Chinese Mainland & Macao SIM card will start charging from January 30, with the validity period lasting until 23:59 on February 3.
3. Is the Chinese Mainland & Macao SIM card still valid for activation within one year from the date of purchase?
The Chinese Mainland & Macao SIM card is still valid for activation within one year. However, once activated outside Chinese Mainland, the customer must enter Chinese Mainland or Macao to use it within 30 days.
4. What should I do if the SIM card cannot be activated outside Chinese Mainland?
Remote assistance for activation is currently unavailable. You may contact customer service to proceed with a cancellation and refund.
5. Are there any regional restrictions for activation outside Chinese Mainland?
Currently, activation is supported in over 180 regions outside Chinese Mainland. For details, please visit the China Unicom Hong Kong official website: https://store.cuniq.com/tc/services/inland-service
6. Will this affect the usage of existing Chinese Mainland & Macao SIM cards?
Chinese Mainland & Macao SIM cards sold on or before July 31,2026 are not affected.
7. What should I do if I find out after entering Chinese Mainland that the SIM card was not activated outside Chinese Mainland?
Remote processing is currently unavailable. You may contact customer service to proceed with a cancellation and refund.
Cancellation Policy:
Can not cancelled, refunded or changed