WiFi - compatible with both Android and iOS. Compatible only with Android and not suitable for iOS devices.

There is no functional difference between Bluetooth and Wi-Fi adapters, only the compatibility with different operating systems (iOS, Android).īluetooth 2.0 - the most common and cheap devices. Issues and questions related to adapters are discussed at our forum ' Attention! 'Bad' Bluetooth & WiFi adapters with low quality clones of ELM327'.īy wireless connection type adapters could be Bluetooth or Wi-Fi. Also, in turn, Bluetooth devices can be Bluetooth 2.0 or Bluetooth 4.0 / BLE. So one could consider this as buying cheap lottery ticket.

But please note, that those adapters might keep working quite well with other protocols. The cheapest ones might just reject to work with some protocols from OBD-II pool and so be incompatible with some cars. And the price level have more or less direct correlation with the reliability and compatibility of the adapter with different car models and protocols. Appropriate adapters usually priced from $5 to $40. As alternative market propose multiple custom or 'clone' solutions compatible with ELM327. The most effective and reliable adapters are based on the original ELM327 chip from, or at independent compatible solution at STN11xx from One just need to take into account the fact that OBD adapters with original chips are priced at US $60 and higher. One of the most common question on our portal is about choosing OBD adapter, particularly which one device is suitable – Wi-Fi or Bluetooth. All you need to check your vehicle and start enjoying all application opportunities is a smartphone and adapter. A huge number of drivers around the world appreciated InCarDoc usefulness and efficiency for car diagnostics.

Wifi vs bluetooth obd2