Metro exit numbers matter
Large metro stations can have a dozen or more exits, with different exits on opposite sides of an entire street. Follow the prompted exit number strictly — the wrong one can add a 10-minute walk. When unsure, check the in-station exit signs.
Pickup and drop-off points may differ
Two sides of the same road, above and below an overpass, or the entry/exit direction of a one-way street can all differ. The pickup point and the actual drop-off point for a ride are often not the same coordinates — mind the "pickup point" in the navigation.
Large buildings have multiple entrances
Malls, hospitals, attractions and universities usually have several gates, and the entrance the map locates may not be the nearest or open one. Once you're nearby, check the on-site signs rather than fixating on the map's red dot.
Save screenshots for offline use
With a weak signal or no network, the map may not load. Screenshot key routes, transfer plans and destination locations before you head out, so you can check them anytime without relying on the network.
Show taxi drivers the Chinese address
Most drivers don't speak English. Save your hotel or destination's Chinese address and phone as a screenshot and show it directly to the driver — ten times more effective than describing it verbally.
Indoor and underground signals drift
GPS is weak inside malls, metro stations and underpasses, so the blue dot jumps around. In these cases, exit numbers and on-site signs are more reliable than the map.