Connectivity FAQ

An eSIM (embedded SIM) is a digital SIM card permanently built into your device. It allows you to activate a cellular plan without inserting a physical card. Profiles are downloaded remotely via QR code or app.

Check Settings → General → About on iPhone for an EID number. On Android, check Settings → Network & Internet → SIM cards for an "Add SIM" option. Most phones released after 2018 support eSIM.

For EU residents using EU carriers, roaming within EU member states is included in your home plan (subject to fair use policies). Non-EU travelers are not covered by these regulations.

Light users: 500MB–1GB/day. Moderate users: 2–3GB/day. Heavy users (video calls, streaming): 5–10GB/day. For a one-week trip, plan for at least 5–10GB for light-to-moderate usage.

Yes, most modern phones support dual SIM. You can keep your home SIM for calls while using an eSIM for data. This is useful for maintaining your home number while using a travel data plan.

In urban areas with 4G, expect 20–100 Mbps download. Rural areas may be slower. Most plans throttle speeds after the high-speed allowance is exhausted, typically to 128–512 Kbps.

Purchase a plan through the provider's app or website, receive a QR code, scan it in your device's SIM settings, and follow the prompts. Activate 24–48 hours before departure to allow time for troubleshooting.

Toggle airplane mode, verify the correct eSIM is set as data SIM, try manually selecting a network, restart your device. Contact provider support with your EID and ICCID numbers if issues persist.

Most plans support hotspot tethering. Check your specific plan's terms. Using your phone as a hotspot increases battery drain significantly — carry a portable charger.

Fair use policies limit roaming benefits to prevent "permanent roaming" — using a foreign plan as a permanent substitute for a domestic plan. Carriers may limit data or charge extra if you spend more time roaming than at home.

No. Switzerland is not an EU or EEA member. Standard EU roaming rules don't apply, though many carriers have bilateral agreements. Norway and Iceland are covered as EEA members.

For most travel use cases, 4G LTE provides sufficient speeds. 5G offers higher speeds but is currently available primarily in major urban areas. Unless you have very high bandwidth needs, 4G is typically adequate.

Depends on the provider. Some allow top-ups on existing profiles; others issue new profiles for each purchase. Many allow keeping inactive profiles on your device for future trips, though the original data allowance may have expired.

Verify eSIM support and carrier-unlock status, purchase and install your plan 24–48 hours before departure, verify the profile appears in cellular settings, note provider support contact information, download offline maps as backup.

Yes: local prepaid SIM cards (available at airports and carrier shops), portable Wi-Fi devices, hotel and public Wi-Fi, or home carrier international roaming add-ons.

Western EU countries generally offer excellent coverage. Norway, Iceland, and Switzerland have comparable quality. The Western Balkans have improved but have more rural gaps. Turkey has strong urban coverage. Always research specific destinations.

A Mobile Virtual Network Operator provides mobile services without owning network infrastructure, instead purchasing wholesale capacity from MNOs. Many travel eSIM providers operate as MVNOs or resellers of MVNO capacity.

Regional plans (covering Europe) typically offer better pricing and coverage quality for European travel than global plans. Global plans are more useful for travelers visiting multiple continents. For Europe-only travel, a regional plan is usually the better choice.

Public Wi-Fi carries security risks. Use a VPN for sensitive activities. For banking and work communications, a private cellular connection is significantly more secure than public Wi-Fi.

Network steering refers to how an eSIM provider directs your device to connect to preferred network partners. Poor steering configuration can result in connecting to a lower-quality network even when better options are available.

Many modern tablets with cellular support eSIM (iPad Pro 2018+, iPad Air 2019+). Some laptops with integrated LTE/5G also support eSIM. Compatibility with travel eSIM providers may be more limited than for smartphones.

High-speed rail routes generally maintain good 4G coverage with brief drops in tunnels. Regional trains in rural areas have more variable coverage. For important work during train journeys, download what you need in advance.

Most eSIM travel providers are technology companies that purchase wholesale data capacity from existing networks. They are not network operators themselves. Their coverage quality depends on the underlying network partnerships they have established.

The GSMA is the global mobile industry association that defines eSIM technical standards (SGP.22 for consumer devices). GSMA certification ensures that eSIM providers meet security and interoperability requirements. Look for providers using GSMA-certified infrastructure.

Enable data usage monitoring in your device settings. Set alerts when you reach 80% of your allowance. Use Wi-Fi for large downloads. Disable background app refresh for data-hungry apps. Download maps and content offline before leaving Wi-Fi.