Smart SIM is a data-only eSIM that works alongside your main SIM to give you peace of mind for your signal.

📶Better UK signal – 100+ essential apps with unlimited data on EE, O2 or Three when your main SIM loses signal

🌎Free global roaming – those same 100+ apps with unlimited data in 180+ countries

So whether you’re deep in the countryside, mid-commute, or holidaying in Cameroon, Smart SIM keeps you connected when it matters most.

Set up once and it’s there whenever you need it. No more bad signal, dodgy wifi or expensive roaming fees 👋

Yes. When you completely lose signal, Smart SIM will automatically connect to the best available network (note this doesn’t happen if you’re just low on signal). iPhone users can also use our shortcut button to manually switch in seconds.

Yes, from South Africa to Sri Lanka, 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.

Good question. We’ve always done things differently at Honest on our mission to build the best mobile network on the planet. 

After introducing Classic SIM to thousands of happy customers, we still felt signal and roaming could be better. So we developed Smart SIM.

Smart SIM is £5/month on our 30-day plan, or £45 for the year if you choose our annual plan (that’s just £3.75/month 😮).

We love your enthusiasm, but it’s a no. You'll need your main SIM for calls and texts, social media and streaming, and web browsing. 

Smart SIM works alongside your main SIM, kicking in when you lose signal or go abroad. Think of it as your trusty back-up, there when you need it most.

All the most essential ones: WhatsApp, Google Maps, Uber, Citymapper, Monzo… the list goes on. You can see all 100+ apps Smart SIM works with here.

We’re adding more apps every week, so stay tuned 👀

It sure is. Consider it the all-you-can-eat buffet for apps including WhatsApp, Google Maps, Uber, Monzo and many more 📱

No. To keep Smart SIM affordable, it’s only for your most essential apps. If we included data-gobbling apps like social media and streaming, the price would skyrocket for everyone. We’re not about that.

You’ll need your main SIM for those. The same goes for WhatsApp calling – for now, it's messaging only.

No, although this might change if enough people want it to. We created Smart SIM as a second SIM – as most phones only have one slot for a physical SIM, it’s eSIM only for now.

Because Smart SIM is a digital eSIM, you can add it to your phone and set up right away.

Just make sure your phone is eSIM compatible before ordering.

We thought you’d never ask! Click here to get your Smart SIM – you’ll be up and running quicker than you can say ‘better signal and free global roaming’.

No. Classic SIM is your essential everyday UK SIM for texts, calls and data. It piggybacks on Three’s network.

Smart SIM is the ultimate second SIM, working alongside your main SIM (on any network) to give you 100+ apps on EE, O2 and Three and in 180+ countries around the world.

For the ultimate peace of mind when it comes to your signal, we recommend using both.