United Kingdom eSIM

Most flagship smartphones released since late 2018 or early 2019 are fully compatible with EastESIM technology, making your travel connectivity seamless. This includes popular models like the iPhone XS and all newer iPhones, Google Pixel 3 and subsequent Pixel models, and the Samsung Galaxy S20 series and its successors. Beyond phones, an increasing number of tablets and smartwatches also support eSIM. The quickest way to confirm compatibility for your specific device is to check its settings under 'Mobile Data' or 'SIM Card Manager,' or consult your device manufacturer's official website.

Almost every flagship smartphone model released since 2019 is equipped with eSIM capability, making it an ideal solution for international travel with EastESIM. This includes a wide range of devices such as the iPhone XS, iPhone 11, iPhone 12, iPhone 13, iPhone 14, and iPhone 15 series, as well as the Google Pixel 3, Pixel 4, Pixel 5, Pixel 6, Pixel 7, and Pixel 8 series. Many Samsung Galaxy S20, S21, S22, S23, and S24 models also support eSIM, along with a growing list of mid-range and other brand devices. This widespread compatibility ensures a smooth connection to our Asian networks.

No. An eSIM can be installed only once, and it locks to the first device it is installed on. It cannot be moved to another phone, re-scanned, or reinstalled afterward, and it is non-refundable once installed. Please install your eSIM on the device you plan to keep using. If you are switching devices and need help, contact our support team.

Yes. With Truly Roaming you top up the eSIM you already installed. You do not scan a new QR code, you do not install a second profile, and your phone number setup does not change.

Open the Truly Roaming app or your account page, pick a top-up for the eSIM you are using, and the data is added to the same line. The validity period is extended at the same time, so a 7-day plan topped up on day 5 keeps running instead of expiring.

This matters most when you are already travelling: running out of data usually means you have no connection to buy more with. Because the top-up lands on the existing profile, it works as soon as it is processed, without Wi-Fi and without reinstalling anything.

Truly Roaming includes a free VPN with every active eSIM. It is not an add-on, a trial, or a paid upgrade: as long as you have an eSIM plan that is still valid, the VPN is available at no extra charge.

This is unusual in the travel eSIM market. Most providers sell data only, and you buy a VPN separately from a VPN company. A few bundle a paid VPN subscription. With Truly Roaming the data plan and the VPN come from the same purchase.

It matters because mobile data abroad does not solve everything. Public Wi-Fi in airports and hotels is unencrypted, some services are restricted depending on the country you are connected from, and banking apps behave differently on foreign networks. The VPN covers that part.

An EastESIM for Thailand offers instant connectivity to premier local networks like AIS, TrueMove H, or dtac, eliminating the need for a physical SIM card. After purchasing your plan on eastesim.com, you'll receive a QR code. Simply scan this code with your compatible device, and your eSIM will provision within moments. This means you can land at Suvarnabhumi Airport (BKK) in Bangkok or Phuket International Airport (HKT) and immediately access high-speed data to order a ride, navigate to your hotel, or share your first Pad Thai moment.

Yes, absolutely! You can conveniently install your EastESIM for Japan before you even board your flight. The activation of your data plan is smart; it only begins once your device connects to a Japanese network, such as NTT Docomo or SoftBank. This ensures that your plan's validity period starts precisely when you need it – upon arrival at Narita International Airport (NRT) or Kansai International Airport (KIX) – allowing you to step off the plane and immediately enjoy seamless connectivity to explore Tokyo or Kyoto.

Most modern smartphones are fully compatible with EastESIM, ensuring you can stay connected across Asia. Popular models like iPhone XS and newer, Samsung Galaxy S20 series and up, and Google Pixel 3a and later models typically support eSIM technology. It's essential to confirm that your specific device model is eSIM-compatible and, crucially, that it is unlocked by your home carrier. This allows it to connect to local networks in destinations like Vietnam or the Philippines, leveraging our deep network partnerships for reliable service.

No, you will not face any roaming charges when using an EastESIM in Singapore or any other Asian destination. EastESIM plans are designed to connect you directly to local high-speed networks, like Singtel or StarHub in Singapore, as if you were a local user. This means you enjoy genuine local data rates and speeds without the exorbitant fees typically associated with international roaming from your home carrier. It's the most cost-effective and reliable way to stay connected, whether you're exploring the Gardens by the Bay or dining in Chinatown.

Most EastESIM plans for destinations like South Korea are primarily data-focused, offering robust internet connectivity through carriers like SK Telecom or KT. While direct traditional calls or SMS are generally not included, you can effortlessly use popular internet-based communication apps such as WhatsApp, Line, KakaoTalk (essential in Korea), FaceTime, or Skype for both calls and messages. For those needing a local Korean phone number, many VoIP services or virtual number apps can provide this functionality, integrating seamlessly with your data-rich eSIM connection.

Almost always, yes — usually by an order of magnitude. Standard carrier roaming outside your home region is commonly billed per megabyte or as a daily pass of 10-15 USD. A travel eSIM is a prepaid data plan bought at local wholesale rates.

A concrete comparison: a 5 GB / 30-day plan for a single country averages about 28 USD across our catalogue. A daily roaming pass at 10 USD reaches that after three days, and keeps charging.

The exception is regional roaming that your carrier already includes for free — EU-to-EU roaming for EU customers, for example. If your plan covers the country you are visiting at no extra cost, use it. Everywhere else, prepaid data is cheaper.

Less than most guides tell you. Across 278 of our own travel eSIMs, the median customer used 96 MB per day. The average was 158 MB, and even heavy users at the 90th percentile stayed under 350 MB a day.

That means for a one-week trip:

• 1 GB covers a typical traveller — maps, messaging, occasional browsing
• 3 GB is comfortable if you post photos and videos daily
• 5 GB or more only if you stream video or work off mobile data

The common advice of "1 GB per day" reflects home usage on Wi-Fi-free devices, not travel. Most hotels, cafes and airports still give you Wi-Fi for the heavy things. Buy small, and top up if you are wrong — that is cheaper than paying for data you never use.

Buy and install before you fly. Activate after you land. These are two different steps and confusing them is the most common mistake.

Installing writes the profile onto your phone and needs an internet connection — which you have at home and may not have at the airport. Activation happens automatically the first time the eSIM connects to a network at your destination, and that is when the validity period starts counting.

So installing early costs you nothing: a 7-day plan installed three days before departure still gives you 7 full days from the moment you land. Waiting until you arrive means standing in an arrivals hall trying to find Wi-Fi to install a product you already paid for.