Your phone is the one tool you genuinely can’t function without abroad, and it’s the easiest to get wrong. A little setup before you fly turns arrival from a scramble into a non-event.

First

Install an eSIM before you go

Buy and install a data eSIM while you’re still on home wifi, so you land with working data the second you leave airplane mode — no arrivals-hall SIM hunt, no roaming bill. The eSIMs we’d install.

Second

Keep your home SIM for the codes

Here’s the trap that catches people: don’t remove your home SIM to fit the eSIM. Your bank and your logins still send security codes to that number, and losing them in another country is its own small nightmare. Run data on the eSIM, keep the home SIM active for texts.

Third

Turn on a VPN for public wifi

The café and airport networks you’ll join constantly are genuinely insecure, and some of your home services stop working from a foreign IP. A VPN fixes both — set it to launch automatically on untrusted wifi so you never have to remember. Which VPN earns its place.

Fourth

The apps to set up first

Before you fly: download offline maps of where you’re going, a translation app that works offline, your banking apps (and check they don’t block foreign logins), and a password manager so none of the above locks you out. Boring, and exactly what you’ll be grateful for at 11pm in a taxi.

“Losing your two-factor codes in another country is a small disaster you can prevent in two minutes.”

Ten minutes before the flight beats an hour after it. Sort the phone, and arriving somewhere new stops being something to dread.