I have a Verizon Postpaid account.
I took a pre-activated SIM card and popped it into the GL-MiFi EC25-AF modem (which covers several Verizon bands). The SIM had already been activated in another device so it worked.
I am having intermittent success accessing the internet but occasionally instead of showing the signal strength, I’m seeing a “SIM card not registered” message displayed. Sometimes it goes away and I am usually able to access the internet while I see the message; however, occasionally the internet does not work.
I’m wondering if you have any tips on fixing this.