i have problem with my usb 3 my lap does not identify my galaxy s6 mobile it connects for 2 seconds and disconnect the mobile and cable is working fine tried on other laptop and the same issue happened with iphone 6 plus
I am a little confused by your post. So you tried 2 different phones on 2 different laptops and got the same result? Does not sound like the laptop is the problem. Did you use the same cable on both? I would suspect not as the iphone uses Lightning.