Hi.
I have problems getting the 4G Sim-card to work. I install the Sim-card and reset the HU.
The HU identifies the Sim-card, and finds the Network, but will not connect to the Network.
4G Sim-card Installation
disable PIN on simcard. put it into phone and disable it.
ahh, I thought I had done that already, but i had not 
Thank you very much. It works great now
23 days later
yo tengo el mismo error pero ya deshabilite el pin de la tarjeta sim y aun asi no se conecta.
afanguisaca Try setting the APN manually