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@@ -10,5 +10,6 @@
 | My sound board app can't see the files i putted in, but my fileman app can | folow [Soundboard](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Soundboard) to make correct file |
 | Screen went black when transmit / replay |Check [Stealth Mode](https://github.com/portapack-mayhem/mayhem-firmware/wiki/stealth-mode) |
 | Fail / freeze when recording| Make sure your sdcard is FAT32 format, and make sure it’s a branded one with acceptable quality |
+| My GPS-Simulation Doesn't work. / My bluetooth doesn't work.                                                                                     | Most modern devices use cellular to verify GPS. Make sure your devicce is vuln to gps-sim.<br />Go to Settings - Radio, and make sure the "Reference Source" says "External". If not, then check the last checkbox and see if it's getting better.<br /> |
 | Something else | Check more _Troubleshooting_ topics on the sidebar |