Best eSIM by Destination 2026: Turkey, USA, Thailand, UK and More

Each destination has its own eSIM economics: how much data you actually use, which networks work well, and what local rules apply. Below is the practical comparison for the destinations European travellers visit most outside the EU, with prices verified in July 2026.

Three rules that apply everywhere

Before the destination-by-destination breakdown, three principles that do not change regardless of where you are going:

Buy before you leave. Install the eSIM at home on Wi-Fi. Activation happens automatically when you land and the phone connects to a partner network. Never plan on "I'll sort it when I get there" — some countries (Turkey specifically) make this impossible.

Enable data roaming on the eSIM profile. This sounds counterintuitive but is required. Without it, the eSIM plan does not connect to partner networks. It is a one-tap setting in your phone's SIM settings.

Keep your physical SIM for calls and bank codes. Use the eSIM only for data. Your Romanian number stays active for calls, and — crucially — for bank authentication SMS messages that many apps require.

Turkey

Turkey has a specific requirement that catches travellers off guard: since 2025, Turkish authorities block access to international eSIM provider websites (Airalo, Holafly, and others) for users already inside the country. If you try to purchase after arriving, the site simply does not load.

The solution is simple: buy and install before departure. The eSIM sits dormant on your phone until you land in Istanbul or Antalya, then connects automatically.

Networks are typically Turk Telekom or Turkcell — both excellent in Istanbul, Antalya, Cappadocia, and the coastal tourist areas. In remote rural areas, check the plan's network details before purchasing.

Typical weekly consumption in Turkey: Maps + WhatsApp + social media without streaming = 2–4 GB. Add video calls or Instagram Stories = 5–7 GB. The 5 GB plan is the right choice for most travellers.

United Kingdom

Since Brexit, the UK is outside EU roaming rules. Your Romanian mobile operator treats it like any non-EU country — typically €3–7/day, or a capped daily data package. For a week in London, roaming charges can easily reach €21–49.

A UK eSIM is a straightforward fix:

Networks are typically EE, O2, or Three — all good coverage across England, Scotland, and Wales. London specifically has excellent 5G coverage on all networks.

London tip: Download the TfL (Transport for London) app and an offline copy of the tube map before leaving — both use minimal data but save considerable frustration navigating the Underground.

United States

The US market is highly competitive for eSIM, which means prices are among the best globally:

Networks are typically T-Mobile and AT&T — excellent in cities and major corridors, weaker in remote rural areas. For a New York, Los Angeles, or Miami trip, either network is fine.

Data consumption warning for the US: American apps — particularly social media — autoplay video aggressively. TikTok, Instagram Reels, and YouTube Shorts on a US connection can consume 1–2 GB per hour if left unchecked. Enable "Data Saver" in each app's settings if you have a smaller plan.

For a typical week (maps + Uber + WhatsApp + moderate social media): 5–8 GB is comfortable. Add streaming or video calls: go to 10–15 GB.

Thailand

Thailand has excellent mobile infrastructure and Wi-Fi is widespread in hotels, restaurants, and cafés — which means your actual data consumption is lower than in destinations with less public Wi-Fi:

Networks typically use AIS or DTAC — both have solid 4G coverage in Bangkok, Chiang Mai, Phuket, and Koh Samui. In more remote islands or national parks, coverage is more variable.

Thailand tip: Download Google Maps offline for the specific islands or regions you are visiting. Navigation in Thai is difficult and offline maps are a genuine lifesaver on islands like Koh Tao or Koh Phangan where roads are not well-signposted.

Egypt

Egypt is a popular destination for Eastern European travellers, and local SIM cards at the airport are an alternative — but eSIM is simpler:

Networks typically use Orange Egypt or Vodafone Egypt. Coverage is good in Cairo, Luxor, Aswan, Sharm el-Sheikh, and Hurghada. More remote areas (Western Desert, Sinai interior) have limited coverage on any network.

Note for Egypt: If you are staying at an all-inclusive resort in Sharm or Hurghada, resort Wi-Fi is usually included and adequate for most needs. The eSIM becomes most useful in Cairo, during Nile cruises, or when travelling between cities.

Japan

Japan deserves a special mention because its network infrastructure is exceptional — some of the fastest and most reliable mobile internet in the world — but foreign SIMs and eSIMs used to be restricted. That has changed:

Networks use IIJmio or NTT Docomo partners. Coverage is extraordinary — even in rural Hokkaido or the Japanese Alps, 4G is generally available.

Japan-specific note: Japan is a heavily cash-based society in many contexts (small restaurants, temples, rural areas). Download Hyperdia or Google Maps with offline Tokyo/Osaka/Kyoto maps before arriving. Navigation by train is complex and you will use maps heavily.

Comparing Airalo, Saily and Yesim

Airalo is the largest aggregator — it sources plans from hundreds of local providers, so it offers the most options per country. If you want maximum choice or are going somewhere unusual, Airalo wins.

Saily is NordVPN's eSIM product. It includes basic VPN protection for public Wi-Fi connections, which is useful in countries where network security is a concern. Competitive pricing for most major destinations.

Yesim has strong regional plans (Europe, Asia) and a 90-day affiliate cookie — relevant only if you are considering their referral programme. For end users, the experience is comparable to Airalo and Saily.

The honest recommendation: for most travellers going to a major destination, compare prices for your specific country on all three before buying. The cheapest plan for Turkey in a given month may be from a different provider than the cheapest plan for Japan. The price difference is usually $2–5, but it is worth checking.

Which phones support eSIM

iPhone: eSIM available from iPhone XS / XS Max / XR (2018) onwards. iPhone 6, 7, 8, and X do not have eSIM.

Samsung: Galaxy S20 and newer support eSIM in Europe. Many Galaxy A-series phones from 2022 onwards also support it — check your specific model.

Google Pixel: Pixel 3 and newer.

Other Android: Inconsistent — some models in a range have eSIM, others do not, even in the same product line. Search "[your phone model] eSIM support" to confirm.

How to check on iPhone: Settings → General → About → if you see "EID" or "IMEI2" → eSIM supported.

How to check on Android: Settings → Network → SIM Manager → if "Add eSIM" option appears → supported.

Installing an eSIM — step by step

The process is the same regardless of provider:

1. Purchase the plan online (website or app) and pay by card
2. Receive a QR code by email
3. On iPhone: Settings → Mobile Data → Add eSIM → scan the QR code
4. On Android: Settings → Connections → SIM Manager → Add eSIM → scan QR code
5. The eSIM profile installs in 30–60 seconds
6. At your destination: go to SIM settings → select the eSIM profile → enable Data Roaming
7. Your phone connects to the partner network automatically

Install at home, on a good Wi-Fi connection. Do not attempt this at the airport or on 4G — the installation requires a stable connection and a moment of attention.

EU destinations — you do not need an eSIM

For completeness: if you are travelling within the EU, you almost certainly do not need an eSIM. EU roaming rules mean your Romanian plan works in all 27 EU member states plus Norway, Iceland, and Liechtenstein at no extra charge, subject to fair use limits (typically 15–30 GB/month of data roaming depending on your operator).

EU destinations where no eSIM is needed: Greece, Bulgaria, Croatia, France, Spain, Italy, Germany, Portugal, Austria, Czech Republic, Hungary, and all other EU countries.

The only exception: if your Romanian plan has a very small data allowance (under 5 GB/month) and you will be travelling for more than 2–3 weeks, buying additional EU roaming data or a local eSIM might be cheaper than your operator's overage charges.

For more on the eSIM vs roaming comparison in detail: eSIM vs roaming — when each makes sense.

For travel insurance that covers device loss (including your phone with that eSIM): travel insurance guide for Europe 2026.