TRAVEL SMARTER. STAY PREPARED.

International usage tips

Prepare your phone, understand potential charges, and get help while traveling.

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YOUR CHECKLIST0%

7 steps left before you go

Emergencies abroad

For emergencies, use your destination's local emergency number or another available way to contact local services. Do not assume 911 will work outside the United States.

Before you goSeven steps to get ready.

Phone setupiPhone and Android settings.

Understand chargesRoaming, calling and Wi-Fi.

Get helpNot connecting? Start here.

BEFORE YOU GO

Your pre-travel checklist

Tick items as you go. Your progress stays on this device only; nothing is sent to us.

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Know where you're going

Countries, border areas, cruises and flights can each have different rules.

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Check your phone is ready

Make sure it's unlocked and works on networks abroad. Compatible doesn't mean roaming is included.

Check compatibility

Check what it may cost

Look up approved rates for your plan and destination before you leave.

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Plan for safety

Save the local emergency number, your accommodation and consulate details offline.

Download what you'll need

Offline maps, travel documents, and sign-in or recovery codes for your apps.

Know which line you'll use

If you have more than one SIM, check which line handles data and calls.

Save how to reach us

Keep our help center and support number handy.

Contact support

Rates live in one place.

This guide explains; Check a Destination shows approved rates.

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PHONE SETUP

Set up your phone for international travel

Menu names vary by model and software version. Steps here are guidance, not proof your plan includes roaming.

Check your destination and plan terms before turning on roaming. Some activity may cost extra.

Open Settings, then Cellular (or Mobile Data).
If you have two lines, tap the Zoiko line.
Check which line is set for Cellular Data.

Manufacturer guidance reviewed November 4, 2025 · Apple Support (opens in a new tab)

Traveler sitting with suitcase checking smartphone

Using two SIMs or eSIMs?

Each line can have its own data and calling rules. Check which line your phone uses for mobile data and calls before you travel, so you don't use the wrong one by accident.

Save data while you're away

Download offline maps and travel documents first
Turn on Low Data Mode (iPhone) or Data Saver (Android)
Stop automatic app updates and backups over mobile data
Your phone's data counter may differ from your bill

UNDERSTAND CHARGES

Know the difference: roaming and international calling

This guide explains how charges work. It never shows prices; approved rates live in Check a Destination.

Roaming

Using your mobile line on partner networks outside the U.S. Your destination, plan and tier dictate what's included.

Calling overseas

Calling an international number while you're in the U.S. It's separate from roaming, and mobile and landline numbers can differ.

Wi-Fi Calling

Calls carried over Wi-Fi where it's supported. Availability and charges vary, so it isn't automatically free.

Airplane Mode

Stops normal cellular connections while you use Wi-Fi. It doesn't guarantee every possible charge is blocked.

Dual SIM

Two active lines can use different paths and rules for data and calls.

Sea, air & satellite

Cruise, in-flight and satellite networks aren't regular country roaming and can be priced very differently.

Wi-Fi Calling may still involve charges

Whether a Wi-Fi call is charged depends on your line, where you are and who you call. Check before you rely on it, especially for long calls.

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GET HELP ABROAD

Not connecting? Start here.

Answer one question at a time. You can stop as soon as it's fixed.

Traveler with green backpack checking phone at airport

What's happening?

FAQS

Travel questions, answered.

Customer support agent ready to help with travel questions

Planning a trip?

Call 800-988-8116 before you go and we'll talk it through.

Don't assume it will. Use your destination's local emergency number, or another available way to reach local services.

Last reviewed: November 4, 2025

Edition: 1.0

Owner: Zoiko Mobile USA Content

Content reviews deal with a rule date. Rates come from Check a Destination.

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