Travel
Buy a SIM / data plan
Buy a local SIM or data plan and get it working.
What makes this one hard
Plan vocabulary is dense and mostly compound — data allowance, top-up, unlimited, tethering — and the wrong nod signs you up for the wrong thing. Activation then arrives as spoken steps you have to follow on the phone in your hand.
Practice every scenario with a real AI partner
Free to start. The partner reacts in voice, stays in role, and gives feedback on what you said and what you could have said better.