25+ answers to the most common travel connectivity questions.
An eSIM (embedded SIM) is a digital SIM card built into your device. You activate a carrier plan by scanning a QR code or using an app. Multiple profiles can be stored, though typically only one is active at a time.
Most flagship smartphones released after 2018 support eSIM, including iPhone XS and later, Samsung Galaxy S20+, and Google Pixel 3+. Check Settings for an EID number confirming eSIM support.
Yes, if your device supports dual-SIM. Configure your home SIM for calls/SMS and the eSIM for data while traveling.
Purchase a plan, receive a QR code, scan it through your device's eSIM settings, and follow the prompts. Requires WiFi or cellular. Takes 1-5 minutes.
Transfer policies vary by provider. Some allow transfers via app; others require a new plan purchase. Verify the provider's transfer policy before deleting a profile.
EU regulations allow travelers from EU member states to use their home plan across EU countries at domestic prices, subject to fair-use policies. Non-EU travelers are not covered.
No. UK travelers lost EU roaming protection after Brexit. UK carriers may charge roaming fees for EU travel. UK travelers should check their carrier's current EU roaming policy.
Fair-use policies prevent permanent roaming. Carriers can apply surcharges if roaming usage significantly exceeds domestic usage over a four-month period. For genuine travelers, fair-use limits are rarely a practical concern.
Light users: 500MB-1GB/day. Moderate users: 2-3GB/day. Heavy users: 5GB+/day. For a two-week trip, 10-15GB covers most travelers.
Before departure is strongly recommended. This ensures connectivity immediately upon arrival. Some plans require WiFi for activation, making pre-departure installation essential.
Throttling reduces connection speed after a data quota. Many "unlimited" plans throttle to 128Kbps after a high-speed quota. At this speed, video calls are impossible. Always check the high-speed quota and post-throttle speed.
High-speed rail corridors generally have good mobile coverage. Signal drops in tunnels. Many high-speed trains offer onboard WiFi. Overnight trains and regional services may have limited connectivity.
Most plans allow hotspot/tethering, but some restrict it or apply separate data limits. Check plan terms explicitly before assuming hotspot is included.
Lisbon, Tallinn, Berlin, Amsterdam, and Barcelona consistently rank highly for remote work infrastructure, combining strong connectivity with active co-working ecosystems.
For most travel use cases, 4G LTE provides adequate speeds. 5G benefits users who regularly transfer large files or conduct frequent video conferences. 5G availability remains concentrated in major European cities.
Insert a SIM from a different carrier. If it connects, the phone is unlocked. Alternatively, contact your carrier directly.
