Your smartphone is your most important travel tool — maps, translation, messaging, ride-hailing, restaurant reviews, boarding passes, and more. But using it abroad without a plan can result in hundreds of dollars in roaming charges. Here is exactly how to use your phone internationally without paying a cent in roaming fees.
Step 1: Prepare Before You Leave
Disable data roaming
This is the most important step. Disabling data roaming ensures your phone will not automatically connect to foreign cellular networks using your home carrier.
iPhone: Settings > Cellular > Cellular Data Options > Data Roaming > OFF
Samsung: Settings > Connections > Mobile Networks > Data Roaming > OFF
Google Pixel: Settings > Network & Internet > Mobile Network > Roaming > OFF
Disable automatic updates and syncing
Background processes eat data silently. Turn these off before departure:
- App auto-updates: Set to WiFi only
- iCloud/Google Photos: Set to WiFi only for uploads
- Email: Set to manual fetch
- Social media: Disable background refresh
- Cloud backups: Pause until you return
Download offline content
While still on WiFi at home:
- Google Maps: Download offline maps for your destination city/region
- Google Translate: Download language packs for offline translation
- Netflix/Spotify: Download entertainment for flights and downtime
- Travel guides: Save articles, boarding passes, and reservations offline
Step 2: Set Up a Travel eSIM
A travel eSIM is the simplest way to get internet abroad without roaming. It is a second SIM profile that works alongside your existing one.
What you get: A local data connection at local prices in your destination country.
What you keep: Your home phone number stays active for receiving calls and texts (via your physical SIM).
How to set up:
- Visit [triposim.com/destinations](/destinations) before your trip
- Choose a plan for your destination
- Complete checkout (2 minutes)
- Receive QR code by email instantly
- Scan QR code on your phone (iPhone: Camera app; Android: Settings > SIM Manager)
- Label it "Travel Data"
- Activate when you arrive
The eSIM gives you 4G/5G internet without touching your home carrier. Zero roaming charges.
Step 3: Configure Your Phone at Your Destination
When you land:
iPhone Configuration
- Go to Settings > Cellular
- You will see two plans listed (your home SIM + travel eSIM)
- Tap Cellular Data and select your travel eSIM
- Go back and tap your home SIM > turn OFF Data Roaming
- Enable WiFi Calling on your home SIM (if supported by your carrier)
Android Configuration
- Go to Settings > SIM Manager (Samsung) or Network & Internet > SIMs (Pixel)
- Set Mobile data to your travel eSIM
- Set Calls and SMS to your home SIM
- Disable Data Roaming on your home SIM
This setup means:
- All internet goes through the travel eSIM (cheap local data)
- All calls and SMS use your home number (no number change)
- No roaming charges from your home carrier
Step 4: Manage Your Data Usage While Abroad
Even with a data plan, smart data management extends your allowance:
High-data activities to limit or avoid on mobile data
- Streaming video (Netflix, YouTube, TikTok) — uses 1-3 GB per hour
- Video calls — uses 0.5-1.5 GB per hour
- Uploading photos/videos to social media — large files eat data fast
- Cloud backups — can use gigabytes silently in the background
Low-data activities (use freely)
- Messaging (WhatsApp, iMessage) — minimal data
- Maps and navigation — 20-50 MB per hour
- Web browsing — 50-100 MB per hour
- Email — minimal data
- Voice calls over VoIP (WhatsApp, FaceTime Audio) — 30-50 MB per hour
Save data with these habits
- Connect to hotel WiFi for heavy tasks (uploads, streaming, backups)
- Use WiFi at restaurants and cafes for social media posting
- Keep mobile data for essential on-the-go tasks (navigation, messaging, translation)
- Download content for offline use (maps, music, shows)
Step 5: Make Calls Without Roaming
Your home SIM stays active but you do not want to make regular calls through it (expensive roaming rates). Instead:
Free call options (using your travel eSIM data)
- WhatsApp calls — Free to other WhatsApp users worldwide
- FaceTime Audio — Free between Apple devices
- Google Meet — Free video calls
- Telegram calls — Free to other Telegram users
- Facebook Messenger calls — Free to other FB users
If you need to call local numbers
- WhatsApp Business: Many businesses, restaurants, and services have WhatsApp
- Google Voice: Get a US number that works over data
- Skype: Cheap per-minute rates to landlines and mobiles
- TripoSIM Travel Guard: VoIP calling built into the Android app
If you need to receive calls on your home number
Enable WiFi Calling on your home SIM before you leave. This routes calls through your data connection instead of the cellular network, avoiding roaming charges. Check with your home carrier if WiFi Calling works internationally.
Practical Examples
Business traveler in London (3 days)
- eSIM: 3 GB UK plan ($3.99)
- Use: Email, Slack, Teams calls, navigation, Uber
- Calls: Teams/Zoom for meetings, WhatsApp for personal
- Total cost: $3.99 vs $36+ (AT&T roaming)
Family vacation in Italy (10 days)
- eSIM: 10 GB Europe plan ($12.99) per person
- Use: Maps, social media, messaging, light video calls
- Calls: WhatsApp and FaceTime
- Total cost: $12.99 per person vs $120+ per person (carrier roaming)
Backpacker in Southeast Asia (30 days)
- eSIM: 20 GB regional plan ($19.99)
- Use: Maps, hostel booking, social media, transport apps (Grab)
- Calls: WhatsApp
- Total cost: $19.99 vs $300+ (carrier roaming)
The Golden Rule
Use your travel eSIM for all internet. Use WiFi for heavy tasks. Use VoIP apps for calls. Keep data roaming OFF on your home SIM.
Follow this rule and your international phone bill will be $0 in roaming charges.
Frequently Asked Questions
Will I get charged if someone calls my home number while I am abroad? If your phone is set up correctly (data roaming OFF on home SIM), incoming calls will go to voicemail. You will not be charged for missed calls. Listen to voicemails over WiFi.
Can I still use iMessage abroad? Yes. iMessage uses your data connection. With a travel eSIM active, iMessages send and receive normally at no extra cost.
What about Apple Watch / smartwatch? If your Apple Watch has cellular, it typically roams with your home carrier. Keep it in WiFi-only mode abroad, paired to your iPhone.
How do I get started? Visit [triposim.com/destinations](/destinations), pick your country, choose a plan, and get your QR code in 2 minutes. See the full process at [triposim.com/how-it-works](/how-it-works).