The Greatest China 30-Day Data SIM

Recently took a trip to China, visiting Shanghai, Hong Kong and Macau (in that order) over the course of 11 days. This SIM worked perfectly in my unlocked Pixel 2 XL. I popped the SIM into my phone immediately after landing in Shanghai, followed the included instructions to set up the APN, and was online before we got to the gate. Internet speeds in all three cities seemed comparable to the LTE speeds I receive at home in the US, and I was able to access all of my Google services and social networks (FB, IG, Whatsapp, etc.) while I was in Shanghai.Communication from the seller was good as well. After my order shipped, they sent me an email clarifying that the card would say 3 GB, but that the system on their end had been updated to a 6 GB limit per the Amazon listing. I can confirm that I used well over 3 GB of data during my trip, and noticed zero perceptible change in performance after crossing the 3 GB threshold. Overall, very happy with the performance and convenience this SIM provided.TL;DR - Quick setup and fast, reliable service when visiting Shanghai, Hong Kong, and Macau.

I was told that my phone (unlocked Pixel 3a XL) was not eligible for international upgrade and this ended up saving the day (at a fraction of the cost). We were in Beijing, Shanghai, Xi'an, Guangzhou, Tashian, Kaiping, Hong Kong a Macau. And connectivity was seamless everywhere I went. No need for a separate firewall either for connectivity to blocked sites in China (having access to Google Maps came in very handy when lost).I would have given it 5 stars EXCEPT:- Although I bought a 6 GB card (now I see its unlimited) and the sticker on the package confirmed this, the service was only set up for 2 GB. At first, we thought that it was the android default setting for checking usage but changing it to 6gb did not fix. My son was able to get this fixed in 10 minutes using the chat on their web-site. They needed the SN on the card, so don't throw out the card it comes on after installing!!One other warning - as soon as I arrived in Macau, I got a few text messages from various casinos. So it seems they are using your location for promotional activities.As others said, it's data only. My son had the much more expensive Verizon phone plan upgrade for international - so we had that for emergencies. He was always watching his data and my service was much more reliable than his (especially in Hong Kong). When asked the one thing he would have changed about the trip, he said "Get a SIM card".

Like other reviewers said, it didn't work! Wasted my money. I arrived in mainland China. Put it in my phones...I tried it in Iphone 6, Iphone 7 and iphone 10. Message receive each time: item not supported. Couldn't make it work to save my life. Had one of the tech at China Unicom in the airport to try it for me. They couldn't make it work. I ended up buying a SIM card with phone and data at the airport for the same price, that worked great through my entire trip! Do not waste your money on this SIM.

I bought two of these. The one I put in my Wifes iphone started working immediately, the APN settings changed automatically. On my Android it was more complicated. I entered the APN settings and it didn't seem to work. I realized later there is a save option in the top right menu to save the APN settings, rather than hitting the back arrow. Once I figured that out, it worked on my Android phone as well. Everything has worked great since!It is important to have this because without it, Google maps other Google products and do not work on Wi-Fi here. (Apparently Google if the only company that refuses to let China control your data) with this sim card Google works great.As other user says, *118*50# is how to check data balance.update- recharging was very difficult. I couldn't get it to work on laptop, could only do it on mobile website (in chinese) by having browser translate, then clicking on "top off" But the website ONLY accepts Visa. And my "Verified by Visa" required me to receive a text message, which of course I can't receive while in China. Regular Skype and Google voice are blocked (thank you communists) , so I had to find a chinese version on web.skype.com on my laptop, call 877-388-6581 (BofA's number) wait on hold ask them to turn off the SMS verification. Once they did that, it worked. My 3gb data lasted me 6 days, and I needed 7. I use heavily though, youtube, maps, etc. Just make sure your mobile verification for your bank and credit cards is turned off before you go overseans

This card is perfect match for my trip.- I was traveling to Shanghai > Macau > Zhuhai > Guangzhou > Hong Kong in 2 weeks. Because mainland China, Hong Kong and Macau are 3 different mobile network carriers, I used to have to use 3 different cards for a similar trip. But this card would allow me to have Internet access on all places without the need of a 2nd card.Some Tips if you plan to buy this card:1. This card works on unlocked ATT and T-mobile phones. If you have a Verizon/Sprint phone, it may not work.2. This card is only for network access, it does not have a phone number. You need to use Skype or Wechat Out to make phone calls.3. It is 3G, but it could be faster than the US 4G speed. I used Speedtest in HK airport, and I got 9.79Mbps download speed. My T-mobile 4G download speed is normally at around 8Mbps near my home. (Screenshot I took in HK airport using this card's network.)4. The network is not perfectly stable when I am traveling in car or train. I often got disconnected when traveling in cars or trains.5. It is expensive. If you are not going to Macau or Taiwan, there are other China Unicom card that you can buy with either lower price or more data.6. I can access Google and Facebook in mainland China with this card. (I won't be able to access to Google/Facebook in mainland China with wifi in mainland.)On the day I return to US after my 2 weeks trip, my phone showed that I spent 0.81GB of data for the last 2 weeks. 1GB is enough, but it had tried to use wifi as much as possible during the trip.