eSIM Set Up and Activation for iPhone

First, make sure that:

• 1. You have a stable internet connection, either via Wi-Fi or a 4G network.
• 2. Your device is compatible with eSIM technology.
• 3. Your device is not locked to a specific carrier. You can check this in Settings > General > About > Carrier Lock.

If you encounter problems during the activation or connection of eSIM, read our guide on troubleshooting eSIM issues on iPhone.

Install eSIM

Open Settings and go to 'Mobile Data' (or 'Cellular').

Tap 'Add Data Plan' (or 'Add eSIM').

Use the QR code.

If you cannot use the QR code scanner, tap 'Enter Details Manually' and enter ASDP Address and Activation Code. You will find this in your TooSIM account.

In 'Data Plan Labels', choose or manually specify a label name to avoid confusion between multiple plans in the future. Select 'Label For'.

Enter a label name, such as TooSIM USA or TooSIM Greece, or any name of your choice.

Attention: You won't be able to rename the added eSIM during the installation process if there are already eSIMs installed on your device. You will be able to rename the new eSIM after installation.

In the 'Default Line', select 'Primary'.

Confirm the use of the 'Primary' number for 'iMessage & FaceTime'.

In 'Mobile Data', select the created TooSIM label as the data option. Also turn off the 'Allow Mobile Data Switching' option. This will prevent additional roaming charges.

Activate eSIM

Open Settings and go to 'Mobile Data' (or 'Cellular').

Select the created TooSIM label in 'Data Plans' (or 'Cellular Plans').

Activate the options 'Turn on This Line' and 'Data Roaming'.

Return to the previous settings and ensure that the TooSIM label is selected by default in 'Mobile Data' (or 'Cellular Data').