Auto · OBD2 Code Readers (Basic)
Do I need a Bluetooth dongle or a handheld reader with a screen?
Reviewer consensus
A handheld with its own screen (ANCEL AD310/AD410, MOTOPOWER, Autel MS309) works without a phone and is foolproof for quick code reads. A Bluetooth dongle (OBDLink MX+, Veepeak, BlueDriver Pro) pairs to a phone app and generally offers richer live-data displays and repair reports, but depends on app quality and a compatible phone. Choose handheld for simplicity, Bluetooth for deeper data.