A phone is not the point of traveling in China. But it helps the day work. The first message from your guide. The hotel address in Chinese. A payment code at a restaurant. A map when you have a free hour. A translation app in a market. A flight update. A train detail. A meeting point outside a station. When connection works, it disappears. When it does not, it becomes the day's problem.
The note in brief
Most travelers should decide how they will stay connected before arriving in China. That may mean using an eSIM, international roaming, a local SIM, portable Wi-Fi or another arrangement. Travelers should also think about maps, translation tools, messaging, payment apps and any services they rely on at home that may not work the same way in China. Solve this before landing. Not in the airport arrival hall.
Why it matters
Connectivity affects much more than posting photos. If your phone cannot receive a code, a payment app may not work. If maps are unreliable, a short walk can become confusing. If messaging is not set up, guide communication becomes harder. If translation tools are not ready, a simple menu can feel more complicated than it should. Good travel is not about staring at a phone. It is about having the phone work when you need it, so you can put it away again.