Start with your daily habits
Most travelers use less data than they expect when hotels, cafés, and airports provide Wi-Fi. Maps, text messages, email, and ordinary web browsing are relatively light. Video, cloud backups, social-video feeds, hotspot use, and app updates consume data much faster.
A practical estimate begins with the number of travel days, then adds a buffer for delayed flights, poor Wi-Fi, and unexpected navigation. Avoid choosing a plan only by the number of days it remains valid; the allowance still needs to match your usage.
Simple allowance guide
Use these ranges as planning guidance rather than exact guarantees, because apps, video quality, and background activity vary by device.
- 1 GB: a short trip with maps, messaging, email, and light browsing.
- 3–5 GB: one to two weeks with regular social media and occasional voice or video calls.
- 10 GB: heavier social media, frequent calls, music streaming, or a longer stay.
- 20 GB: regular video, laptop tethering, or remote work with careful usage.
- Unlimited: useful for intensive use only after checking daily speed and hotspot limits.
Reduce data use before you fly
Download offline maps, music, boarding passes, translation packs, and destination guides while connected to Wi-Fi. Disable automatic photo backup and large app updates on mobile data. On dual-SIM phones, confirm that mobile-data switching is disabled so your home line cannot silently take over and create roaming charges.