Trying to change the sim card for my 4GEE router and am requiring an administration password to unlock the SIM. I cannot seem to find the 'administration password' for my 4GEE router anywhere. I have seen others explain it will be on the back of the battery cover or on my Keep Me card. But there is no code called Admin password and I have tried all the passwords on there and it does't seem to work? I have also tried my personal EE login passwords and it doesn't give me access.