--- product_id: 15944625 title: "The Greatest China 30-Day Data SIM" brand: "china unicom中国联通" price: "€ 0.32" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.pt/products/15944625-the-greatest-china-30-day-data-sim store_origin: PT region: Portugal --- # Greater China coverage 30-day validity 4G network The Greatest China 30-Day Data SIM **Brand:** china unicom中国联通 **Price:** € 0.32 **Availability:** ✅ In Stock ## Summary > 📱 Stay connected, stay trendy! ## Quick Answers - **What is this?** The Greatest China 30-Day Data SIM by china unicom中国联通 - **How much does it cost?** € 0.32 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/15944625-the-greatest-china-30-day-data-sim) ## Best For - china unicom中国联通 enthusiasts ## Why This Product - Trusted china unicom中国联通 brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Travel Smart:** Perfect for globetrotters seeking reliable mobile data in Mainland China, Hong Kong, Macau, and Taiwan. - • **Fair Usage Policy:** Enjoy high-speed data up to 6GB, then maintain a steady connection at 128kbps. - • **Social Media Ready:** Access your favorite apps like Facebook, Twitter, and WhatsApp without restrictions. - • **Versatile SIM Design:** 3-in-1 SIM card fits any unlocked device - Nano, Micro, or Standard. - • **Stay Connected Anywhere:** Experience seamless connectivity across Greater China with unlimited data for 30 days. ## Overview The Greatest China 30-Day Data SIM offers unlimited 4G mobile data across Greater China for 30 days, compatible with any unlocked phone. It features a versatile 3-in-1 SIM design and allows access to popular social media platforms, ensuring you stay connected while traveling. ## Description ## Features - Facebook, Twitter, Google is available in china via using this SIM card. - This SIM card is valid for 30 days (3GB data) from the date of activation. - Top up :HKD $180/30 days/3GB - "English Version Setup guide" in package ## Product Details - **Brand:** China unicom中国联通 - **Service Provider:** China Unicom - **Cellular Technology:** LTE ## Images ![The Greatest China 30-Day Data SIM - Image 1](https://m.media-amazon.com/images/I/61lW7U2SeHL.jpg) ![The Greatest China 30-Day Data SIM - Image 2](https://m.media-amazon.com/images/I/717lgdvKRGL.jpg) ![The Greatest China 30-Day Data SIM - Image 3](https://m.media-amazon.com/images/I/41vlXIZ7WFL.jpg) ![The Greatest China 30-Day Data SIM - Image 4](https://m.media-amazon.com/images/I/71udUfVH+LL.jpg) ## Questions & Answers **Q: What's the latest "activate by" date if i order it today (oct/nov 2020)?** A: It should be 30 June 2021 **Q: I see the description has changed saying it is 6bg instead of 3gb. i purchased on july 7. so is mine 6gb or 3gb? if purchased now is it 6gb?** A: China Unicom totally upgraded cards from 3gb to 6gb.Even if you receive a 3gb packaged card, you will receive a 6gb sms activation message when you active the card. **Q: Can I use this card in iPad?** A: Yes,you can. **Q: can you add data to this card? And how much would it be?** A: Yes, the SIM card can be re-charge/top-up with HK$180 for renewing 30 days Greater China data package subscription. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great. Just follow instructions. *by G***. on May 13, 2019* 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 ### ⭐⭐⭐⭐ Perfect Solution for My Trip to China *by M***. on November 19, 2019* 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". ### ⭐ easy to activate but I didn't know how to make ... *by P***J on April 19, 2017* easy to activate but I didn't know how to make a call from HK nor Taiwan. The local people helped me dial but it didn't work...such a waste of $ I can't get internet service either. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/15944625-the-greatest-china-30-day-data-sim](https://www.desertcart.pt/products/15944625-the-greatest-china-30-day-data-sim) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-25*