Hello, I have Samsung s4 mini with android 4.4.2 . Problem is when i plug it in, it charges but neither phone nor pc detects the connection, also there is no sound in windows that u can usualy hear when u connect something, nothing in device manager. I tried 3 different usb cables and 2 computers (windows 8.1/windows 7). I tried many different modes (MTP, etc.), i tried debugging mode, i tried installing driver for mobile phone and kies (i shouldnt have to do either btw, phone should connect without me doing anything), i tried hard reseting phone. I do not have original Samsung cable, but all 3 cables are data capable, i tried numerous phones on them, and it worked, i have xperia mini and samsung ace 2 with me and both work with no problems with all cables and computers. Any idea what could be the problem ?
Usually you need to select file transfer mode from the phone otherwise it just sits in charge mode. When connected look for a notification about what its doing and it should present a list of options. At least it has since lollipop, cant remember about kitkat. If no notification I 'think' you can access this from the storage settings option somewhere.
Possible the USB port on the phone is faulty, data pins with dry solder maybe You'll get a lot more support here http://forum.xda-developers.com/galaxy-s4
Made sure there's no fluff/dust sitting in the port on the phone? maybe the port itself has gone bad, https://www.amazon.co.uk/SAMSUNG-GALAXY-I9500-I9505-CHARGING/dp/B00D2ZH1O8 and a guide on how to change it over https://www.youtube.com/watch?v=f2ZqM5TN9RQ
I tried cleaning it but it didn't help. I ordered a replacement port for about 2 dollars, i hope this will solve the problem.