customer
通信が不安定
通信が不安定。受信範囲が狭い。

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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customer
通信が不安定。受信範囲が狭い。
Darren M.
Worked instantly, never dropped out, very impressed.
customer
very fast and helpful support
customer
Cellular net speed was average
customer
Everything is OK, satisfied
customer
Not working yet
Response from CellesimSep 16, 2026
Hi Yoav, thank you for writing, and I am sorry you are still offline. I re-checked your line just now and found something concrete: the Cellesim profile is on your phone but it is currently switched off. Settings > Cellular > the Cellesim line > turn on "Turn On This Line". While the line is off, no other setting will help. There is also one question waiting in your support ticket that I still need answered: are you already in South Africa, or still in Israel? Your line has never registered on any network at all, and that points in two opposite directions. If you are still home, nothing is broken, because this package only works inside South Africa. If you are already there, the package runs on Vodacom only and on 3G/4G only, so 5G has to be off and the network chosen manually. The full steps are in the ticket. Please reply there and we will stay with it until you are online. Maya, Cellesim Support
customer
perfect for my uae trip.didn't want to deal with local sim cards.data was fast and stable the whole time.highly recommended.
customer
It doesnt Work in Genève and NOW in Lisbon.
Response from CellesimSep 14, 2026
Hello Fernanda, You are right, and I am sorry. I looked into your line: the eSIM registered on the network within a minute of installation, but it never opened a working data session. Both Geneva and Lisbon are covered by the plan you bought, so this is not a coverage gap on your trip. It is a fault on our side. We are refunding you in full, no need to ask. You will see it back on your card within a few working days. If you would still like a connection for the rest of your travels, reply to the email we are sending you now and we will set up a line on a different network at our cost. Either way, you will not be out of pocket. Thank you for telling us. This particular failure is one we are now tracking, and your review pushed it up the list. Cellesim