99% of connection issues are due to **incorrect username or password** being entered into the router - please check before raising a ticket.
For authentication details please refer to the article on Usernames and Passwords and cross reference with the ones provided on CommsPortal.
**Lack of signal** - this will normally result in little or no connection or a constant drop in connection
**Incorrect device** - there is little point in putting a Three SIM for example into a GPRS router as it will not work.
**Locked Dongles** - Comms365 SIMs will not work in an operator locked dongle as the APN cannot be overridden.
If you are still having problems and all the checks have been performed, please raise a ticket.