Three Destinations, Three Bills: Turkey, the USA and the UAE on a UK SIM
Photo: Derek Harper , CC BY-SA 2.0, via Wikimedia Commons
EU roaming is the easy part of holiday planning. Most UK networks include it, with fair-use limits and the usual small print. Turkey, the USA and the UAE are different. They are popular, they are full of UK visitors, and they are not all treated the same by your UK SIM. The price gap between a sensible add-on and a careless daily pass can be the cost of a decent meal out.
This is a trip-prep guide, not a rate card. Prices move, plans change and the deal you saw last summer may have gone. Use the examples below as a rough 2026 snapshot and check your own network before you fly.
The quick answer
Turkey is often the cheapest of the three for UK SIM users, because some networks include it in a broader Europe or Roam Further zone. The USA is usually mid-to-expensive, with daily passes or travel add-ons. The UAE is often the priciest, and it comes with local rules that can affect voice apps. In every case, the three questions are: is the country included, is there a daily pass, and what is the fair-use cap?
Turkey: often included, but read the cap
Turkey is not in the EU, but several UK networks still bundle it into a wider roaming zone. That can mean your normal allowance works for a set period, subject to a fair-use limit. Others charge a daily pass, often in the £5 to £7 range. A seven-day trip with a £6 daily pass is about £42 extra. If Turkey is included and you have 5GB of roaming data, the extra cost may be zero, but you need to know what happens after 5GB.
The local eSIM alternative can be cheaper for data-heavy trips. A 5GB Turkey data eSIM might cost roughly £8 to £12. It will not give you a UK number for calls, and you need an eSIM-capable handset. Check the daily pass timing as well. Some passes run for 24 hours from first use; others reset at midnight local time. That difference matters if you land late.
USA: convenient passes, painful bills
For the USA, UK networks often sell a daily pass or a fixed travel add-on. Daily passes commonly sit around £6 to £10 per day. A ten-day trip at £8 a day is £80 before you have made a single call. A fixed add-on with a data cap may be better value, but check whether it includes calls and texts or data only.
A local or travel eSIM is often the cheaper data route. A 10GB USA eSIM might cost roughly £15 to £25. The catch is that it is usually data-only. You can use WhatsApp and maps, but you cannot ring a US hotel from your UK number unless you keep your home SIM active and pay roaming rates. Tethering may also be restricted. If you need a hotspot for a laptop, check the eSIM terms before buying.
UAE: expensive, and watch the voice apps
The UAE is often the most expensive of the three on a UK SIM. Daily passes can be around £7 to £10, and some networks exclude the UAE from cheaper travel add-ons. A five-day trip at £8 a day is £40. A 3GB local eSIM might cost roughly £10 to £15, again data-only.
The UAE also has local restrictions on some voice-over-internet apps. That can affect WhatsApp calls and similar services, depending on the network and the rules at the time. Do not assume that because WhatsApp works at home it will work exactly the same way on a UAE network. Check before you rely on it for business calls. Also check whether your UK network's pass includes calls to UK numbers or charges them separately. Receiving calls can cost too.
A rough cost comparison
The figures below are illustrative for a seven-day trip with about 5GB of data. They are not quotes. They are there to show the shape of the problem.
| Destination | Typical UK SIM route | Rough extra cost | Rough local eSIM cost |
|---|---|---|---|
| Turkey | Included in some plans or £5-£7 daily pass | £0 to £42 | £8-£12 for 5GB |
| USA | £6-£10 daily pass or travel add-on | £42 to £70 | £15-£25 for 10GB |
| UAE | £7-£10 daily pass, some exclusions | £49 to £70 | £10-£15 for 3GB |
Traps to check before boarding
- Daily pass timing. A 'day' may be 24 hours from activation or a calendar day. Time zones can catch you out.
- Fair-use limits. Unlimited data at home is not unlimited abroad. You may be throttled after a few gigabytes.
- Tethering rules. Hotspot use is often restricted on roaming passes and travel eSIMs.
- Calls and texts. A data pass may not include voice. Incoming calls can be chargeable.
- Activation. Some add-ons must be bought before you leave the UK. Others start automatically when you connect abroad.
- eSIM support. Check your phone is unlocked and eSIM-capable. Install the eSIM before you fly, but activate it when you land.
- Home SIM settings. If you use a local eSIM for data, switch off data roaming on your UK SIM to avoid accidental charges, but keep it active if you need bank verification texts.
- Emergency calls. A data-only eSIM is not a phone line. Do not rely on it for emergency calls.
A simple trip-prep routine
First, check your network's roaming page for each country, not just the region name. Second, compare the daily pass, the fixed add-on and a local eSIM for your exact trip length and data use. Third, screenshot the terms so you have them at the airport. Fourth, set up your eSIM and test it on airport Wi-Fi before you board. Fifth, download offline maps and save your hotel address.
The best deal depends on how long you are away and how much data you actually use. A short city break may be easier with a daily pass. A two-week road trip is usually cheaper with a local eSIM and a UK SIM kept for texts. Either way, do the maths before you board, not after the bill lands.
