Bluetooth Low Energy (BLE) is a low-power wireless technology used to securely connect your phone to your Gig car. Bluetooth makes locking and unlocking fast and reliable when using the app, especially if you're in an area with poor or no cell service. Bluetooth works best within 30 feet of your Gig car. If you are within 30 feet and are still having trouble, confirm that Bluetooth is turned on and try moving closer to the car. You can also always use your Gig card as a backup key. You don't have to have Bluetooth turned on, but it helps.