Carsifi by default use 5Ghz WIFI as hotspot. If you don't see a WIFI or Bluetooth with the name Carsifi-XXXXX(XXXXX-any number and characters) after the adapter start flashing green on your phone, please try the following solutions:

1. Try to make a full factory reset

2. Try enabling the "Use only 2.4Ghz WIFI" option and check if your phone can see Carsifi-XXXXX WIFI.

3. Try another phone or PC to make sure issue is on the Carsifi side, not your phone