Set up your eSIM
Four steps. Two minutes at home, thirty seconds when you land.
Install at home, on 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 OnKeep the line off until you arrive. Your plan starts counting on first connection at your destination, not at purchase. Turning it on at the airport is exactly right.
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
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 deleted eSIM cannot be reinstalled with the same QR code. After your trip, or if something seems broken, turn the line OFF in settings instead of deleting it. Already deleted it? Contact support and we will sort it out.
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.
Android asks for an APN
A few countries need the APN set by hand. Copy the exact value shown with your eSIM in the RedSim app, then add it under Settings, Mobile Networks, Access Point Names.
Stuck on a step?
Send us a screenshot on WhatsApp and we walk you through it. Average reply time is 2 minutes.