Always roaming when I am home.

id2ego

I used the firmware Firefly-RK3399_Android6.0_EDP785_beta_170321
Because I use RK-3399 with 7.85" IPS LCD Module.
And with the 4G Module Kit.

I finished all the settings and connected, but it was always roaming even if at home.

After serching through the web, I cencluded that I need to update the PRL.

Is it right?

Or give me the solution please?

id2ego

I think that there is no RADIO.

4G module only works, but no Call app, SMS app.

Am I right?