China eSIM for 5 days: one city, how much data you need

How much data 5 days in China takes

What five days in China looks like from one base

Five days is where many Thai travellers pick one city and go deep instead of crossing regions by train. A common shape is Beijing: arrive and rest on day one, the Forbidden City and Tiananmen on day two, the Great Wall on day three, hutongs and food on day four, last shopping before the flight on day five. If you prefer a modern megacity, base in Shanghai and add one return day trip to Suzhou or Hangzhou by high-speed rail. Staying in one city gives your data a clear rhythm. The heaviest days are the ones with ride-hailing, QR payments, maps and menu translation running all day. The light days are the ones spent in a hotel or cafe with Wi-Fi. In China, many public Wi-Fi networks ask for a Chinese mobile number to verify, which tourists often cannot get, so you rely on your own data more than you might expect.

Where data spikes and where it drops

• Spike: the Great Wall day, with a long ride out of town, maps all day and a ride back to book, on a signal that can vary in the hills.
• Spike: the arrival day, installing apps, verifying identity, setting up Alipay or WeChat Pay and calling a ride into the city.
• Drop: museum or temple days when the phone stays in your pocket.
• Drop: the final day of shopping and a pre-booked airport ride.

Which plan shape fits five days in China

Our China-only fixed plans come in 7 days (500 MB or 1 GB), 15 days (3 GB) and 30 days (3, 5, 10, 20 and 50 GB). The 7-day packs are far below the 6 GB estimate for normal use, so they only suit someone who messages and uses offline maps. The 15-day 3 GB pack leaves almost no margin even for the 3 GB light estimate.

That leaves two sensible routes for five days. One is a daily plan, bought for exactly five days, in a 1, 2, 3 or 5 GB-a-day size depending on how heavy your days are. The other is a 30-day 10 GB pack, which covers a five-day trip with room above the 6 GB normal figure, accepting that the remaining days go unused.

When a daily plan beats the 30-day pack

Five days is a length where daily plans have the edge, because you pay only for days you use and can size each day differently, say 5 GB for the Great Wall day and 1 GB for a temple day. But if you plan to stream video or share data with a friend, a 30-day 10 GB pack is easier on the mind because there is no daily allowance to run out of mid-afternoon. Compare the totals in the table below, since they shift with size.

Apps and access to settle before a single-city trip

Every China plan we sell exits through a foreign gateway, as our guide to choosing a China eSIM explains. That is why Google, LINE and Instagram usually open without a VPN of your own, but nobody can guarantee every app on every network. Test the moment you land, and do not rely on a single app for anything critical. For payments, set up Alipay in Tour Pass mode or link a card to WeChat Pay at home before you fly. Scan-and-pay uses little data but needs a steady connection. For rides, Didi is the main app, and Amap and Baidu Maps are the accurate city maps, so download an offline map of the city first. Our plans are data only, with no voice or SMS, so keep your main SIM active to receive OTP codes from Thai banks.

Our estimate table gives 3 GB for light use, 6 GB for normal and 11 GB for heavy over five days. For one city in China, someone who runs maps, ride-hailing and translation all day tends to land near 6 GB, while someone making content, streaming live or watching video on mobile data drifts toward 11 GB, which a 5 GB-a-day plan can handle.