I have activated my Sim Card on 11th May 2021.  Inbound/Outbound Calls are working fine. However, SMS service is not working. I send a message to my friends in Germany on Telekom or other German networks. I got the error as shown in picture below.

I have already performed below steps:

• Send SMS by adding *T# before the message - No luck
• Dial *222# - Getting Request Failed pop up
• Verified the Message Settings - It's configured as per recommendation

My Phone details are:

• Samsung S10+
• Android 11
• Software Updates - Up-To-Date