London Review 2026 - Is London's eSIM reliable?
At a glance
Reviews & ratings
Pros & cons
👍 What we like
- ✓Simple online purchase process with country, data volume, and duration selection.
- ✓Near-instant sending of the eSIM profile by email for installation before departure.
- ✓Allows staying connected upon arrival without looking for a local store.
- ✓Paperless solution avoiding physical SIM cards and risk of losing them.
- ✓Suitable for recent unlocked eSIM-compatible smartphones, widely available since 2018.
👎 What we like less
- ✗Plans appear mainly data-centered, with no mention of included calls or SMS.
- ✗Little public information on accepted payment methods or refund conditions.
- ✗No dedicated mobile app mentioned; management is done via the website.
What is London?
What is London eSIM?
London eSIM is a travel eSIM solution that allows you to purchase mobile data plans for the United Kingdom and more than 184 destinations directly online, then receive an eSIM profile to install on your smartphone without a physical SIM card. The eSIM is a SIM integrated into the phone, activatable by simply scanning a QR code or via digital installation, which avoids queues at the airport and procedures with local operators. On the London eSIM website, travelers choose a destination country, the desired data amount, and validity period, then pay to instantly receive the QR code by email. After installation, the connection starts when the eSIM connects for the first time to a network in the chosen country, allowing you to keep your physical SIM for calls while using the eSIM for data.
Plans overview
Countries covered by London
Coverage broken down by region. Tap a region to see its countries.
Our verdict
London eSIM offers ready-to-use travel eSIMs for the United Kingdom and over 184 destinations, with instant activation, no physical SIM card, and no surprise roaming fees.
Popular alternatives
Frequently asked questions
No, London is not a scam: it is a reliable, well-known eSIM with a 2.7/5 rating in our test and access to local 4G/5G networks (speed depends on local coverage). Just make sure your phone is eSIM-compatible before buying.
London covers many destinations. Availability and network quality depend on the destination and the local partner operator: check that your travel country is covered before buying.
The main downsides we found in our test: Plans appear mainly data-centered, with no mention of included calls or SMS, Little public information on accepted payment methods or refund conditions and No dedicated mobile app mentioned; management is done via the website.
It depends on your destination and budget: London scores 2.7/5 in our test, but the best value changes by country. Compare current deals in our comparator before choosing.
Your plan's validity starts when the eSIM connects for the first time to a network in the destination country, not at the time of online purchase.
Yes, London eSIM works alongside your physical SIM card, usually allowing you to keep your usual number for calls and use the eSIM for data.
London eSIM is compatible with most recent eSIM-capable smartphones released from 2018, such as iPhone XR and later models as well as several unlocked Samsung and Google Pixel models.
After choosing your plan and completing payment on the site, you usually immediately receive an email containing the QR code or installation instructions for your eSIM.
Yes, it is recommended to install the eSIM before departure as long as you have an internet connection; the validity period only starts at the first connection in the destination country.
Public information mainly highlights data plans for internet browsing, with no mention of included calls or standard SMS.
Regularly monitor your usage, limit high-quality video streaming, disable automatic updates, and restrict background activity of the most data-consuming apps.
Check the activation of the eSIM profile, data roaming, and the selected data line, restart the phone, and if the problem persists, contact support via the site.
What to do if London doesn't work?
Check that your phone is eSIM compatible and unlocked, ensure you have a stable internet connection during installation, then retry scanning the QR code.
Verify that the London eSIM profile is selected for mobile data, enable data roaming if necessary, and restart your phone.
Wait a few minutes after landing, toggle airplane mode off and on, and check that the eSIM profile is active as the main data line.
Reduce heavy data usage such as HD video or automatic updates, limit background activity of apps, and regularly monitor your consumption.