i have been super happy with my blue driver scanner. its iphone/android based and connects via bluetooth. it does a ton of stuff including live data. i am totally impressed with how well it works especially for the price. its on amazon for $119. when you scan a error code it even has the most common fixes associated with that code

i have two of them and going to buy a few more just to leave in the glove box of my vehicles)

https://us.bluedriver.com/pages/bluedriver