Set up your eSIM
Four steps. Two minutes at home, thirty seconds when you land.
Set it up over Wi-FiKeep the QR email handyOne QR = one installYour number stays active
1At home · on Wi-Fi
Open the eSIM installer
SettingsCellularAdd eSIMOn some iPhones the menu is called Mobile Service instead of Cellular. Same place, same button.
15:30
Cellular
Cellular Data
Personal Hotspot
Add eSIM+
2At home · on Wi-Fi
Scan your QR code
Choose Use QR Code and point the camera at the code in your RedSim email. Confirm, and the eSIM appears in your SIM list with the plan name and no phone number. That is normal, it is a data line.
Rename it to RedSim Travel so it is easy to find later.
15:30
eSIM detected
3When you land
Turn the line on
SettingsCellularRedSim TravelTurn OnSwitch the RedSim line on and turn data roaming on for it. The moment you land it connects automatically and you are online. Your home SIM stays on for calls and SMS.
15:30
RedSim Travel
Turn On This Line
Home SIM · calls & SMS
4When you land
Roaming on, eSIM as your data line
On the RedSim line, switch Data Roaming ON. Then open Cellular Data and pick the RedSim line, not your home SIM. These two switches cause almost every no internet case.
Roaming here is safe. Your plan is prepaid, there are no extra charges.
15:30
Data Roaming
Cellular DataRedSim
Nova · 5GConnected
5Only in some countries
Add the APN if you have no internet
iPhones usually set the APN on their own. In a few countries (Turkey, Uzbekistan, Georgia) you may still need it. Copy the APN shown with your eSIM, then open:SettingsCellularCellular Data NetworkIn the APN field enter isp (the value shown with your eSIM), leave Username and Password blank, then restart the iPhone.
15:30
APN
isp
Username—
That is it. You are online.
Signal bars usually appear within 30 seconds. Nothing yet? Toggle Airplane Mode once, then see the fixes below.
Do not delete your eSIM
A QR code installs only once, so a deleted eSIM cannot be reinstalled. If you have no internet, do not delete it. Turn Data Roaming on and set this line as your data line instead.
Troubleshooting
The eSIM installed but there is no internet
Almost always a switch: turn Data Roaming ON for the RedSim line, and set it as your active mobile data line (not your home SIM). Then toggle Airplane Mode once.
My QR code will not scan again
A QR code installs exactly once. If the eSIM is already on your phone, that is expected. Do not reinstall. Fix the connection in settings instead.
Speeds are slow
Make sure 5G or LTE is allowed for the eSIM line, then try selecting the network manually in cellular settings. Toggling Airplane Mode after you move location also helps.
Do I need to set an APN?
In Turkey, Uzbekistan and Georgia the APN sometimes has to be set by hand. Android: Settings, Mobile Networks, Access Point Names, Add, then set APN to isp (the value shown with your eSIM), leave Username and Password blank, Authentication type None, APN type default,supl, and select it. iPhone: Settings, Cellular, Cellular Data Network, put the same APN there and restart. If nothing prompts you but you have no internet in these countries, add it this way.
Stuck on a step?
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