Need help?Do you have a question about the CoComm F840 and is the answer not in the manual?
Read carefully following instructions before you start using your Co-Comm F840 device.
Turn off your terminal or disable radio functions in specific situations like airplanes or flammable atmospheres.
Turn off the phone near electronic medical equipment and consult manufacturer if unsure.
Maintain a distance of at least 6 inches between phone and pacemaker to avoid interference.
Mobile phone signals cannot guarantee connection; do not rely solely on it for emergencies.
Steps to resolve issues where the phone does not power on.
What to do when the phone prompts for a PIN code.
What to do when the phone prompts for a PUK code after incorrect PIN entry.
What to do when the phone asks for an unlock code.
Troubleshooting common SIM card errors like dirt or improper placement.
Troubleshooting network connectivity issues and weak signal areas.
Resolving issues when the phone is outside network service coverage.
Troubleshooting why calls cannot be made after entering a number.
Addressing issues with poor call quality, often related to signal strength.
Troubleshooting reasons why others cannot call you.
Resolving issues where the other party cannot hear you during a call.
Troubleshooting short battery life in standby mode, often due to signal search.
Troubleshooting battery charging problems and when to replace the battery.
To Next Page
General
