A cell phone signal booster can be a lifesaver when you're struggling with poor cell phone reception. However, if your booster isn't working correctly, it can be frustrating. Here are some tips to help you troubleshoot and fix common issues with cell phone signal boosters:

1. Check the cables: Ensure that all cables are correctly connected and not damaged. Loose or damaged cables can cause signal loss and affect the booster's performance.

2. Check the antennas: Ensure that the outdoor and indoor antennas are installed correctly and pointed in the right direction. The outdoor antenna should be placed where it can receive the strongest signal, while the indoor antenna should be placed where you need coverage.

3. Check the power source: Ensure that the booster is correctly plugged in and receiving power. If the booster is powered by an external power source, ensure that it's working correctly.

4. Reset the booster: Sometimes, resetting the booster can help fix issues. Turn off the booster, unplug it, wait for a few minutes, and then plug it back in and turn it on.

5. Check for interference: Other wireless devices or sources of interference can affect the booster's performance. Try moving the booster away from other devices or sources of interference.

6. Contact customer support: If none of these steps work, contact the manufacturer's customer support for further assistance.

In conclusion, troubleshooting a cell phone signal booster that's not working requires checking cables, antennas, power source, resetting the booster, checking for interference,  and contacting customer support if necessary. By following these steps, you can fix common issues with cell phone signal boosters and enjoy better cell phone reception.