China Unicom Cross Border King Mainland -HK Prepaid SIM 4G Hong Kong Number (Stored-Value HK$80)

I used this SIM card for a recent trip to China. I was in Beijing, Taian and Tainjin. I have an unlocked motorola G5 phone, model XT1687. Once installed the SIM card seemed to recognize the network and some phone services worked intermittently. I wasn't able to send any SMS message to USA number without first buying an additional package for direct dialing. After purchase of that, I still wasn't able to send SMS messages. I was unable to get any assistance from the online help. Out of four numbers to the USA I tried to call all failed to connect save one.The card was quickly exhausted of value and I had to top it off again. After adding another HK $100 to the card, it lasted one USA phone call and about two hours before exhausting the value again. I gave up and just use hotel wifi after that.I can't say that the card doesn't work well in Hong Kong but in mainland China, I was quite disappointed both in the value and the performance of the SIM card.

We purchased 2 sim cards in anticipation of our mainland China and Hong Kong trip. On our last similar trip, we had difficulties buying a sim card in the mainland as us citizens and were too rushed to make a sim card purchase in the HK airport due to an airline connection. This trip we purchased the sim cards to have ready cards upon arrival. Unfortunately, the service was horrendous in terms of cell coverage, actual functionality, and customer service as well. One sim card could only make calls with spotty coverage in the mainland without data service. Another card could only do data and no voice despite adequate funds on the sim cards. Website would not allow Visa credit card top up of funds through their own checkout website or thru Visa checkout. Customer service was available by online chat but offered no additional help in troubleshooting to top off. We threw away the cards and ended up using our us carrier international plans which was pricey but reliable. Do NOT purchase. Would recommend 1) purchasing sim cards at the HK airport if time allows 2) using USA cell carrier international plans for mainland portion of trip and purchasing HK sim card when needed 3) finding another sim card brand.

I wasn't certain how to activate the card, but the company reassured me with quick responses before I left the US that once I reached China, the connection would be fine. This card allowed my friends in Mainland to text me, and I could either call or text them. All text/ calls were":roamed" through Hong Kong. For the short two weeks that I needed the card used on an unlocked, Samsung Duos, 3G, I was very pleased.

The service was a little difficult to activate, but the instructions were all there in the packaging that the sim came in. The service worked for a few minutes, then I got the following text (on November 21, 2018):ChinaUnicomHK: Your prepaid SIM was expired on 19/02/19 . You can keep your number and balance after top-up within 30 days from the expiry date. You may recharge your account on cuniq.com/tp . Enquiry：+85221221188HK/ +8613068400177 CNReply ReplyThe stated expiration date was 90 days in the future, but my phone service was cut off and never worked again. I went to a China Unicom store (in China), but no one could even understand my problem, much less help me. The data service continued to work, but it was slow.

I brought this sim card two weeks ago and I am very disappointed, this card expired on 12/31/2019. Yet it is available to purchase under Amazon.

I bought it in September 2020, but the activate date is December 31, 2019. so terrible!

buy two SIM and lasted 2 days, a scam