I downloaded the app "Ampere" thinking it would tell me how much amps and volts my phone is receiving. I don't think it's correct. I own a Samsung S7 egde. Has the quick charge 3.0 spec to go from empty to full in about an hour. Here are some tests I used with various chargers: 0.7 amp standard wall charger: Showing as 400-500 ma on screen Samsung wireless charge pad (standard one): Showing 300 ma on screen Samsung wall charger that came with my Note 3 rated at 2.0 amp: Showing 1000 ma on screen Samsung wall charger that came with my S7 Edge and is quick charge 3.0 rated: Showing 1000 ma on screen. For the Samsung wall charger tests I used the cables that came with the unit. I would think the 2.0 amp wall charger would show more than 1000 ma. And most definately the new Samsung wall charger that came with my S7 Edge that is quick charge 3.0 certified should show a lot more than 1000 ma. Is there an updated app that might be better?