Cellesim Review 2026 - Is Cellesim's eSIM reliable?
At a glance
Reviews & ratings
One-click installation was simple and connection was immediate. The user especially appreciates the free VPN and ease of use during travel.
The eSIM installed without difficulty on a Samsung smartphone. The included VPN is considered very useful and the connection in Europe is described as fast.
The service allowed having data throughout the trip at a cost lower than the usual operator.
Pros & cons
👍 What we like
- ✓Fast and fully digital activation.
- ✓Wide international coverage with over 200 countries and regions.
- ✓Useful app for tracking usage and managing multiple eSIMs.
- ✓Free VPN included.
- ✓Support advertised 24/7 with quick response.
- ✓Main line can remain available while using the eSIM.
👎 What we like less
- ✗Data-only plans, no local number or regular SMS.
- ✗Compatibility limited to eSIM-compatible and unlocked smartphones.
- ✗Network quality depends on local operators.
- ✗Prices are displayed in dollars on the site, which may complicate comparison for some travelers.
What is Cellesim?
What is Cellesim?
Cellesim is a travel eSIM provider that replaces the physical SIM card with a digital profile to install on a compatible smartphone. The service provides mobile data access abroad via prepaid plans, with no contract or roaming fees. The offer includes local, regional, and some urban plans, with options depending on destination, duration, and data volume. Plans are data-only and do not include regular calls or SMS. The eSIM is purchased online then installed via QR code or through the app. Once activated, it allows using mobile data while the main SIM card can remain active for calls and SMS.
Plans overview
Countries covered by Cellesim
Coverage broken down by region. Tap a region to see its countries.
Our verdict
Cellesim offers prepaid travel eSIMs in more than 200 countries, with quick activation, local or regional plans, and free VPN included. The offer mainly targets travelers who want a simple mobile connection without a physical SIM card or roaming fees.
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Frequently asked questions
No, Cellesim is not a scam: it is a reliable, well-known eSIM with a 3.9/5 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.
Cellesim 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: Data-only plans, no local number or regular SMS, Compatibility limited to eSIM-compatible and unlocked smartphones, Network quality depends on local operators and Prices are displayed in dollars on the site, which may complicate comparison for some travelers.
It depends on your destination and budget: Cellesim scores 3.9/5 in our test, but the best value changes by country. Compare current deals in our comparator before choosing.
Cellesim offers prepaid data plans by country, region, and in some cases, by city. Depending on the destination, you may also find unlimited data plans.
No, plans are data-only. However, you can use messaging and calling apps like WhatsApp, FaceTime, or Telegram with the included data.
Yes, the eSIM works as a second data line while your main SIM card can remain active for calls and SMS.
Yes, tethering is supported on most compatible phones, subject to device settings and local network conditions.
The app shows remaining data and plan validity duration. You can also add data to your active eSIM from your account.
The site states a full refund if the issue is service-related, and a partial prorated refund for used plans according to refund conditions.
Cellesim indicates that most recent eSIM-compatible smartphones work, including iPhone XS and newer, Google Pixel 3 and newer, as well as Samsung Galaxy S20 and newer.
Yes, you can add data or purchase a new plan for the same active eSIM without reinstalling a new profile in many cases.
What to do if Cellesim doesn't work?
Check that the phone is eSIM compatible, unlocked, and that the internet connection is stable during installation.
Ensure that the eSIM is selected for mobile data, enable data roaming, then restart the phone.
Reduce high definition streaming, disable automatic updates, and limit background apps.
Use the connection reset function in the app, then briefly toggle airplane mode before reactivating data.