Best eSIM apps for travel UK 2026 — full comparison
A travel eSIM app lets you download a local data plan directly to your phone before or during your trip. No physical SIM swapping, no airport queues, no roaming charges.
How travel eSIM apps work
Download the app → choose destination and plan → purchase → receive QR code → scan in Settings → eSIM installs in 2 minutes. Your UK SIM stays active for calls and texts. The eSIM handles data at local rates.
The main apps compared
Airalo — best value per GB
Largest travel eSIM marketplace — 200+ countries. Competitive per-GB pricing (typically £4-6/GB for Europe). Data-only with fixed allowances. Best for travellers who monitor usage and want the cheapest per-GB rate.
Best for: Budget travellers, short trips, light to moderate data users.
Holafly — best for heavy users
Unlimited data plans by duration (5, 7, 15 or 30 days). Higher flat cost than Airalo but removes usage anxiety entirely. Popular with remote workers and long-stay travellers. EU unlimited for 7 days approximately £22-25.
Best for: Heavy users, remote workers, anyone who streams heavily, longer trips.
BambooSIM — listed on GadgetRank
UK-focused travel eSIM with competitive European and global rates. UK-based customer support — useful if you have a problem while travelling. Strong for mainstream European destinations.
Best for: UK travellers wanting UK-based support, Europe and mainstream global destinations.
WorldSIM — listed on GadgetRank
Strong global coverage including destinations other providers sometimes miss. Offers international calling alongside data — rare in the eSIM market. Good for complex multi-country itineraries.
Best for: Unusual destinations, multi-country trips, travellers who need calling capability.
Which app should you use?
Europe, 5-7 days, moderate data: Airalo. Cheapest per GB.
Europe, heavy user or remote work: Holafly unlimited.
Non-EU (UAE, USA, Asia): Airalo or Holafly, or BambooSIM/WorldSIM for UK support.
Complex multi-country trip: WorldSIM.
Compatibility
All require an eSIM-compatible unlocked phone. Apple lists all compatible iPhones — iPhone XS and later. Samsung Galaxy S20+, Google Pixel 3+.
Compare travel eSIM plans on GadgetRank →
How to install a travel eSIM step by step
The process is the same regardless of which app you use:
- Download the app (Airalo, Holafly, BambooSIM or WorldSIM)
- Create an account and purchase a plan for your destination
- Receive a QR code by email or in-app
- On iPhone: Settings → Mobile Data → Add eSIM → Use QR Code → scan the code
- On Android: Settings → Network & internet → SIMs → Download a SIM
- Label the eSIM (e.g. "Paris trip") and configure it as the data line
- Keep your UK SIM as the calls and texts line
- Activate the eSIM data on arrival at your destination
The whole process takes under 5 minutes and can be done at home before you travel. You will not need airport Wi-Fi or a local SIM shop.
Compare travel eSIM plans on GadgetRank →
Why compare on GadgetRank?
GadgetRank is an independent UK comparison site — not affiliated with any retailer, recycler or network. Every comparison is based on live price data. There are no paid placements or sponsored rankings. The best current offer appears at the top because it is the best current offer, not because of any commercial arrangement.
All retailers listed on GadgetRank meet minimum quality criteria: Trustpilot score of 4.0 or above, minimum 12-month warranty, battery health guarantee, and devices unlocked to all networks. This baseline means every option on GadgetRank is a trustworthy choice — the comparison is purely about price and any additional perks.