Tech conferences mean back-to-back meetings, live demos, last-minute pitch decks, and video calls with your team back home. Losing your internet connection at the wrong moment is not an option. Yet staying connected while travelling across multiple countries remains one of the most underestimated logistical headaches for founders, investors, and remote teams on the conference circuit.
Whether you are heading to CES in Las Vegas, SXSW in Austin, Web Summit in Lisbon, or MWC in Barcelona, your connectivity plan deserves as much thought as your travel itinerary.
The connectivity problem for business travelers
International roaming through your home carrier still works, but the costs add up fast. Most US and European cell phone plans charge premium rates for data, calls, and texts abroad. A week at a conference in a new country can easily result in a roaming bill that exceeds the cost of the flight.
The old school approach of buying a local SIM card at the airport solves the cost problem but introduces new ones. You lose your primary phone number, you spend time hunting for phone shops in an unfamiliar city, and if you are visiting several countries on one trip, you need a different local SIM card for each destination.
Your options compared
International roaming plans
Carriers like T-Mobile, AT&T, and Vodafone offer international roaming add-ons. T-Mobile’s Magenta plans include some international data, though speeds are often throttled. Daily fees of $10 to $15 add up over a week-long trip, and data limits can be restrictive. Video calls, cloud syncing, and large file transfers eat through your data plan quickly.
Roaming works best for short trips to one country where you need to stay on your existing number for calls and texts.
Portable Wi-Fi devices
A pocket Wi-Fi device rents for around $8 to $15 per day and creates a personal hotspot that multiple devices can connect to. The advantage is a dedicated internet connection without touching your cell phone plan. The downsides are practical: you carry an extra device, keep it charged, and if the battery dies mid-conference, you are offline.
Local SIM cards
Buying a local SIM card gives you local rates and generous data allowances. But you need an unlocked phone, and you lose access to your home phone number. A conference circuit through London, Berlin, and Barcelona means three different physical SIM cards, three different data plans, and three trips to phone shops.
Travel eSIM
This is where the landscape has shifted. A travel eSIM is a digital SIM profile that you download directly to your phone. No physical SIM cards to swap, no phone shops to visit, no extra devices to carry.
You purchase an eSIM data plan online, scan a QR code, and your phone connects to a local network in your destination country. Many providers offer regional plans that cover multiple countries on a single plan, which is ideal for conference travelers moving between cities.
Providers like Roambit offer eSIM plans for the US and regional plans for Europe, Asia, and beyond. Some eSIM providers also include built-in VPN protection, which encrypts your connection on public Wi-Fi at conference venues, hotels, and airport lounges. For anyone handling sensitive data or investor communications on the road, that secure connection matters.
The cost is typically lower than international roaming. A regional eSIM plan covering all of Europe for a week often costs less than two days of carrier roaming charges. And since eSIM profiles live on your device digitally, you keep your primary phone number active while the travel eSIM handles your data connection.
Staying secure on the road
Connectivity is only half the equation. Conference venues, hotels, and coffee shops offer free Wi-Fi, but these public Wi-Fi networks are prime targets for data interception.
Use a VPN on every public network
A VPN encrypts your internet connection and prevents anyone on the same Wi-Fi network from intercepting your data. Whether you use a standalone VPN app or an eSIM provider with built-in VPN, make sure it is active every time you connect to public Wi-Fi. This applies to hotel Wi-Fi, airport lounges, and co-working spaces.
Download offline maps and documents
Google Maps allows offline downloads for specific regions. Before your trip, download maps for each destination city. Similarly, download critical presentation files and reference documents so you are not dependent on an internet connection at the worst possible moment.
Keep your home number accessible
Use messaging apps like WhatsApp, Signal, or Slack over your data connection to stay in touch with your team and loved ones. These apps work over any internet connection, whether you are on Wi-Fi, a local SIM, or a travel eSIM. Your contacts can reach you on your familiar number without worrying about international calling rates.
The conference travel connectivity checklist
Before you leave: Check if your phone supports eSIM or dual SIM. Purchase and install your travel eSIM before departure. Download offline maps. Confirm your VPN is installed.
At the airport: Switch to airplane mode, then enable your travel data plan. Test your connection before leaving the terminal.
During the conference: Connect to venue Wi-Fi only with a VPN active. Use your eSIM data plan as a backup if the conference Wi-Fi is unreliable. Keep a portable charger handy since staying connected while travelling all day drains your battery faster than usual.
Between countries: If you have a regional eSIM plan, your data connection switches automatically when you cross borders. No new SIM card needed, no reconfiguration.
The bottom line
The right connectivity plan depends on how you travel. For a single short trip to one country, international roaming might be sufficient. For conference circuits spanning multiple countries, a regional travel eSIM is the most convenient and cost effective solution.
Sort out your connectivity before you board the plane. One less thing to worry about when you land means you can focus on what you actually traveled for: the meetings, the pitches, and the opportunities.
