About FairSIM
FairSIM is a data-only travel eSIM app for iPhone. It gives travelers mobile data in 150+ destinations at wholesale network rates, with no activation fee, no contract and no roaming charges. The price on screen is the price you pay.
FairSIM launched in 2026 and is built by Eclipse Studios, a software company with deep expertise in telecom, based in Istanbul, Türkiye.
Why we built FairSIM
Using your phone abroad often costs more than it should. Carrier roaming passes can run $10–12 a day, and many travel eSIMs add their own markup on top.
We wanted something simpler: data at the rates local networks charge, installed in one tap, with your own number still working for calls and texts.
FairSIM is the fox that found the loophole, so you don't have to overpay for data again.
Fast facts
- Launched
- 2026
- Destinations
- 150+
- Compatible devices
- iPhone XS+
- Languages
- 8
- Support reply time
- 24h
What makes FairSIM different
Wholesale rates
Data at the rates local networks charge, with no hidden markups.
One price, no surprises
The price on screen is the price you pay. No activation fees, no contracts.
One-tap install
No QR code needed on most iPhones. Install before you fly and you're online the moment you land.
Your number stays
FairSIM is data-only. Your physical SIM stays active for calls, texts and 2FA codes.
Track and top up
See how much data you have left, get alerts before you run out, and top up in seconds without reinstalling.
Plans for the whole group
Buy and manage eSIMs for family or friends traveling with you, all from one app.
How FairSIM works
Three steps between you and the internet abroad. Nothing to pick up at the airport.
Pick a destination
Pick your destination and a data plan that fits your trip.
Install eSIM
Install your eSIM with one tap, ideally before you travel while you're on Wi-Fi.
Land and connect
Your data is ready when you arrive.
Top up anytime
Running low? Top up in the app.
Quick answers
Do FairSIM eSIMs come with a phone number?
No. FairSIM eSIMs are data-only by design, which keeps costs low. For calls and texts, your physical SIM stays active so you keep your existing number, and WhatsApp, FaceTime and iMessage work over data.
Can I use my physical SIM at the same time?
Yes. iPhones run both at once: your physical SIM handles calls and texts while the FairSIM eSIM handles data. Set FairSIM as the data line and turn off data roaming on your home SIM to avoid surprise charges.
Can I get eSIMs for family or friends traveling with me?
Yes. Buy and manage separate plans for the people you travel with, each with their own data, all visible in one FairSIM app. Nobody else has to download anything.
Compare before you travel
We publish side-by-side guides comparing FairSIM with AT&T, Verizon and T-Mobile roaming.
Company details
Eclipse Studios Teknoloji Dijital Hizmetler Limited ŞirketiHuzur Mah. Fazıl Kaftanoğlu Cad. No:7, Inner Door No:10Sarıyer / Istanbul, Türkiyesupport@fairsim.appWe reply within 24 hours
Travel data at the real price.
Your number stays on your SIM. Free to download, iPhone XS or later.