Scalance M876-4 incoming SMS problem

[@LittleBigSheep_]

Hello, I use DC/DC/Rly and I don't receive SMS. Do you have any idea why it doesn't work ? Thanks

[@christoftaumberger3863]

Hy.. Do you still have the Problem? Or do you have a Solution?? I have the same Problem. Maybe you coud help me.

[@adityamali5356]

Hello Sir, I am using same device and application but I am not even able to send SMS. I want to know that Does that SC LED on hardware need to be on or is it ok if it's off? In my case it is continuously off..