To make SIM card work properly, please do the following steps:
- SIM card shall have some money on its account or free Megabytes for using the Internet
- SIM card shall support 2G Internet
- The pin-code request shall be removed
If the mobile Internet still doesn’t work, please, go to the Hub settings (⚙️) ⇒ GSM and enable roaming, Ignore Network Registration Error and Disable Ping Before Connecting, then go back in order to save the settings and check GSM connection again.