Symptoms: Spillman times out, unable to connect to secure websites
On the MiFi
Choose Menu > Scroll down to About > Scroll down to APN.
APN should read: iot.t-mobile.com
If it does not
Plug the MiFi into a computer and navigate to 192.168.1.1 or http://my.mifi
Admin password can be located in Keeper under IT Account Passwords - Old & New
In the web page Navigate to Settings > Advanced > Continue
Locate APN Settings, Click Edit
Add APN Name and click save changes.
Restart the Mifi.