Connectivity is the first thing most travellers sort out and the thing most guides get out of date. Public wifi exists but is patchy and often needs registration; a travel SIM or eSIM bought before arrival is simpler and now cheap.

The phrases here cover asking for the wifi password, finding a socket, and buying a SIM. One detail worth knowing: many cafes and hotels give the password on the receipt or a table card rather than telling you, so wifi no pasuwaado wa arimasu ka often produces a pointing finger rather than a spoken answer.