Hi ​@Happyji, 

Thank you for reaching out.

We're sorry to hear you're having difficulty connecting your SIM to your Galaxy Watch Ultra.

Please note that, as stated in our Terms and Conditions, iD Mobile SIMs and eSIMs are designed and tested for use in compatible mobile handsets only. While they may work in other devices, such as smartwatches, we cannot guarantee compatibility or functionality, and we aren't able to provide full support for their use in these devices.

If you'd like us to review your account or discuss the issue further, please contact us via Live Chat or send us a direct message through one of our social media platforms, and we'll be happy to assist where we can.

Owethu