Murat D.
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Cellesim is a travel eSIM service for people who want data the moment they land, without hunting for a shop or paying roaming rates.We cover more than 200 countries and regions, with local, regional and global plans. You buy online or in our app, receive the eSIM within a minute, and install it by scanning a QR code. Your physical SIM stays in the phone, so you keep your own number for calls and bank verification codes while your data runs on our line. Our plans are data only.Our iOS and Android apps let you buy, install, check how much data is left, and top up while you are abroad, without opening a browser. Running low on a trip is a two tap fix.We work in 31 languages, and support answers in the language you write in. Every destination page lists the local networks we connect to, so you can see the coverage before you buy, and our device checker tells you whether your phone supports eSIM at all.Returning customers earn loyalty credit, and referrals give both sides a discount. Selected plans include a free VPN.If something does not work, write to us. We would rather fix it or refund it than leave you offline.
Cellesim (cellesim.com) has 53 customer reviews on Five Star Index, with an average rating of 3.7 out of 5.
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Murat D.
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Garena G.
Çok iy Gerçek herkes yapsın
Samet K.
Süper uygulama..
Berde Ç.
Excellent signal in Norway. Used it for a week-long cruise and had data in every port. Very impressed with the coverage.
Juriaan K.
They offer unlimited data packages advertising it as 5G etc, but in reality it does 250kbps. Can barely use WhatsApp. Big scam
Response from CellesimJan 24, 2026
Dear Juriaan, We are sorry to hear that you are disappointed with your experience. However, we would like to clarify how our services work to provide a complete picture for our community. As clearly stated on our website and product pages before any purchase is made, our "Unlimited Data" plans offer high-speed 5G/4G connectivity up to a specific daily limit. Once this limit is reached, the speed is adjusted (to approximately 0.38 Mbps) to ensure that you remain connected for basic needs like messaging without any service interruption. This is a standard Fair Usage Policy (FUP) used globally to provide sustainable unlimited access. We provide these details transparently so that travelers can choose the plan that best fits their data consumption habits. For users requiring constant high-speed data without daily throttling, we always recommend our "Fixed Data" packages. Our records show that the service was delivered exactly as described in the terms you accepted during checkout. While we understand 250-380 kbps is not intended for high-bandwidth tasks, it is not a technical failure but a documented feature of the specific plan you selected. Best regards, Cellesim Management Team