I received the SODAQ-SARA-R410M, registrated my SIM on the t-mobile portal and placed the SIM into the board. After uploading the Passthrough Sketch
So far so good, however, I cannot get connection with T-mobile : (no value of one after AT+CGATT?).
+CME ERROR: No connection to phone
Does anybody have a suggestion for me to resolve the issue?
Thanks in advance!