O2 Germany sim not registered

[maholio]

Try what I wrote in another thread:

MUDI v2 can’t connect using MEO data sim in Portugal

Seems provider detects you by IMEI. Run this AT (NOT SSH) command: AT+EGMR=1,7,"[IMEI]" Example: AT+EGMR=1,7,"352395084327731" You can generate new IMEI using this service (link) In this manual showed how to enter AT commands, just replace command from manual with command that I provided above. I recommend to change IMEI with TTL. Guide (Click on “Please check the sim card and device compatibility implication“)