Switch from Three to EE on LTE3302

boondoggle

I've been using a Three data SIM in an LTE3302 router to get mobile broadband. I'm now trying to switch to EE, but the router just will not connect to the internet with the new EE SIM. Router and Three SIM were purchased separately, so the router is not locked to Three. I've tried a factory reset to no avail. I don't believe it's an issue with signal strength - I've tried in various locations where Three reception is available, including in the middle of a city with strong signal strength. I've spoken at length with EE, who confirm that the SIM is activated and ready to go. Any pointers much appreciated.

boondoggle

Figured it out. The router was not recognising the EE SIM via auto APN, so APN had to be configured manually. Furthermore, EE appears to default to IP6, which the router does not appear to like. Forcing IP4 fixed it. Found the solution in https://support.zyxel.eu/hc/en-us/articles/360016970359-My-LTE-device-will-not-connect-via-Auto-APN-setting