# Scotland travel eSIM guide > Scotland mobile guide: UK networks with varying roaming charges, Highland signal that can be intermittent, the 999 text service to register in advance, ETA rules and 999, 112 and 111. Page: https://esimnest.com/gb-sct/guide/ Scotland is part of the United Kingdom, so a visitor's phone connects to UK networks and the charge depends on the home plan. VisitScotland says your mobile should switch onto a UK network but that charges for calls and data vary, so check your provider first. The bigger phone question is in the hills: Mountaineering Scotland says mobile reception in the Highlands can often be intermittent or non-existent, and it explains how to register for the 999 text service before a trip. This guide reads VisitScotland, Mountaineering Scotland and the UK government's ETA page, and says that we found no coverage map in these sources. By eSimNest Team. Facts last checked 2026-10-02 against the sources listed at the end. ## What VisitScotland says about using your phone VisitScotland's FAQ says that most accommodation providers offer Wi-Fi, though you should check before booking, as do many cafés and visitor attractions. It says you should also be able to access roaming data from your phone, with charges varying, and that a mobile should switch onto a UK network while you are in Scotland, though charges for calls and data vary, so you should check with your own provider before the holiday. That is general advice rather than a price list. For a visitor from outside the UK, a home plan's roaming terms, a travel eSIM that names the United Kingdom or a UK prepaid SIM bought on arrival are the usual options. None of these sources gives a coverage map. ## Highland signal: intermittent or non-existent Mountaineering Scotland's advice on calling for mountain rescue says that mobile phone reception in the Highlands can often be intermittent or non-existent, and that if you need help but cannot make voice calls there may be enough signal to send a text. It says that if there is no coverage at your location, you should consider whether it might be worth moving to a place where there is, and to conserve battery by having all the details to hand before phoning. VisitScotland's outdoor safety tips add that weather can change within minutes in coastal, hill and Highland areas, that you should tell someone your route and when you plan to return, and that a walking pack should include your phone and a charger. Those are reasons to plan a day in the hills as if you will have no signal. ## Register for the 999 text service before you need it Mountaineering Scotland says you can contact the 999 emergency services by text from your mobile only if you have already registered with the emergency SMS service, and that registering means texting the word register to 999, getting a reply and following the instructions, which takes about two minutes. It tells people to register now and not to wait for an emergency. The page is written for UK mobile users, and we did not find a statement on whether a foreign SIM can register or use the service, so check with your operator. For mountain rescue it says to call 999 or 112 and ask for Police and Mountain Rescue, with the location, ideally a six-figure grid reference and a named feature, the number of casualties and your contact numbers ready. ## Using a phone for navigation: charge, protect, download Mountaineering Scotland says that in 2022 it surveyed over 4,000 hill walkers, that 87 per cent said they had used a phone or GPS to navigate, and that of those, over 40 per cent had experienced it stopping working in some way. It adds that mountain rescue teams respond to many call-outs because of GPS or smartphone failure, inappropriate route choice or an inability to use the technology effectively. Its advice is to charge to 100 per cent before starting, to protect the phone in a waterproof case and keep it close to your body, and to download all the maps you may need, including surrounding areas, so you do not rely on mobile data, using a topographic map such as OS or Harvey rather than any digital map. It stresses that reading a map matters more than following an arrow on a screen. ## The ETA, and who does not need one VisitScotland says people travelling to the UK without a visa need an Electronic Travel Authorisation, linked electronically to the passport, for up to six months for tourism, visiting family and friends, business or study, and that you do not need one if you have a British or Irish passport, permission to live, work or study in the UK, a visa to enter the UK or a British overseas territories passport. It says many people can visit for up to six months without a visa, including those from the EU, the USA, Canada and Australia. The UK government's page says an ETA costs 20 pounds, warns that other websites may charge more and that you should avoid sites imitating government services, and notes that an ETA does not guarantee entry. Apply on the official site, and keep the confirmation on your phone. ## Emergency numbers VisitScotland gives 999 as the emergency number and says to dial 111 to speak to NHS 24 for urgent health advice out of hours, and Mountaineering Scotland says 999 or 112 will reach the emergency services. The UK dialling code is +44. Our Scotland plan page covers data before you arrive. Emergency calls: Many travel eSIMs carry data only, and a data-only profile may not place a normal phone call. Keep a voice-capable SIM for emergencies, such as your home SIM or a local plan, and save the local emergency number from this guide. Plans and current prices for Scotland: [eSIM for Scotland](https://esimnest.com/gb-sct/). ## Questions ### Will my phone work in Scotland? VisitScotland says it should switch onto a UK network, but charges vary, so check with your provider. ### Is there signal in the Highlands? Mountaineering Scotland says reception can often be intermittent or non-existent. ### How do I register for the 999 text service? Text the word register to 999 and follow the reply, says Mountaineering Scotland. It does not say whether foreign SIMs can register. ### Should I rely on my phone for hill navigation? Mountaineering Scotland says to download maps, charge fully, protect the phone and be able to read a map. ### Do I need an ETA? Most visitors without a visa do, at 20 pounds, but British and Irish passport holders do not, according to the sources above. ### What is the emergency number? 999, with 112 also reaching emergency services, and 111 for NHS 24 urgent health advice. ### Can the weather change quickly? VisitScotland says it can change within minutes, especially in coastal, hill and Highland areas. ## Sources - [VisitScotland: Scotland FAQs](https://www.visitscotland.com/travel-planning/scotland-faqs) - [Mountaineering Scotland: calling for help](https://www.mountaineering.scot/safety-and-skills/essential-skills/mountain-rescue/calling-for-help) - [VisitScotland: outdoor safety tips](https://www.visitscotland.com/things-to-do/outdoor-activities/outdoor-safety-tips) - [Mountaineering Scotland: smartphones and GPS for navigation](https://www.mountaineering.scot/safety-and-skills/essential-skills/navigation/electronic-navigation-aids) - [VisitScotland: passports, visas and customs](https://www.visitscotland.com/travel-planning/passports-visas-customs) - [GOV.UK: electronic travel authorisation](https://www.gov.uk/eta)