I've used a couple of the cheap Bluetooth readers and Tourque on my Android phone. I have never had a problem. They read and clear codes and can provide some real time data. They were only about $10 on Amazon. My children have had issues with their cars and I've given them my readers. I replaced the last one with BlueDriver. It's around $100 but it provides a lot more information. It will check the engine, ABS, transmission, air bags, etc.