Challenger MVNO Honest Mobile announced that over 100,000 users have signed up for its new Smart eSIM, a connectivity innovation that automatically switches to another network when the primary signal is weak or unavailable.

Designed to work alongside a user’s main SIM, the Smart SIM activates whenever a signal is lost—whether in the UK or abroad—keeping essential apps connected to the strongest available network.

Solving Real Connectivity Problems

The launch follows Honest Mobile’s research, which revealed that poor signal strength (37%) and unexpected charges (31%) rank among Brits’ top mobile frustrations. The Smart eSIM addresses both, providing seamless backup coverage and roaming without the usual headaches.

Priced at £3.75/month when billed annually (or £10/month on a flexible 30-day plan), it offers a cost-effective solution for travelers and remote workers needing reliable connectivity.

Free unlimited data roaming on 200+ essential apps

The Smart eSIM provides unlimited data on 200+ apps via EE, O2, and Three. It also includes free global roaming for those apps in 180+ countries.

The Smart SIM doesn’t include web browsing, social media, and streaming apps

To keep Smart SIM affordable, it’s only for your most essential apps.

From South Africa to Sri Lanka and Italy to India, Smart SIM has got your essential apps covered in 180+ countries (see the full list of available countries here). No hidden costs or scary bills to worry about while you’re away. You’ll need to hop onto wifi for activities like web browsing or streaming.

Built for Modern Travelers

Whether navigating with Citymapper and Waze, booking with Skyscanner or Tripadvisor, paying via Chase UK or Wise, or staying productive with Gmail, Outlook, and Microsoft Teams, Honest’s Smart eSIM offers seamless access across borders.

Honest Mobile’s Smart eSIM offers free unlimited data roaming on over 200 essential apps, covering everything a traveler needs to stay connected and productive abroad. For navigation, you’re covered with trusted apps like Google Maps, Apple Maps, Citymapper, Waze, Uber, Uber Driver, what3words, and Green Flag. Travel and booking apps include global platforms such as Airbnb, Booking.com, Skyscanner, Tripadvisor, British Airways, Ryanair, easyJet, Eurostar, Trainline, Flixbus, and Jet2, alongside major hotel chains and services like Hilton Honors, Marriott Bonvoy, IHG, and Hostelworld.

For public transport and ride-sharing, the Smart eSIM supports apps like Bolt, FREENOW, Lime, Metrobus, National Express, Avanti West Coast, TfL Go, and GVB Amsterdam. You’ll also stay connected with essential communication tools such as WhatsApp, WhatsApp Business, iMessage, and Slack.

Banking on the go? The eSIM works seamlessly with apps like Monzo, Revolut, Chase UK, PayPal, Barclays, Halifax, Starling Bank, Santander, and Wise. It even supports Curve and Apple Wallet alternatives for travelers managing multiple cards.

When it comes to utilities and productivity, key apps include Google, Gmail, Microsoft Teams, Outlook, ChatGPT, Just Eat, Deliveroo, BBC News, BBC Weather, Met Office, Flush, and Costa. Even travel-related support apps like ESTA (for US travel visas) and Octopus Electroverse for EV charging are included.

Whether you’re planning, booking, navigating, working remotely, or simply staying in touch, the Smart eSIM ensures uninterrupted access to the apps that matter most — in over 180 countries.

Aitken, Co-founders of Honest, said

“The big networks have set the bar shockingly low for customer needs. Too many people still struggle with poor connectivity in the UK and abroad. With yet another price hike coming this April, Brits deserve better. We developed Smart SIM to solve poor UK signal and expensive roaming so people can stay connected without worrying about costs or dropouts.*

Honest Mobile was founded in 2019 by Andy Aitken and Josh Mihill and set out to provide a customer-friendly and more environmentally conscious alternative to legacy mobile networks.