Make sure you are using the Galaxy S4 cable that came with the phone.
Remove your battery and sim card and restart your phone may also work.
If that doesn't work try debugging mode. Go to settings - More options - About device - Click device number 7 times.
Then go back to developer options and make sure it is turned on in the top right hand corner and then scroll down to USB debugging turn it on and restart your phone.
The other option is to us the usb menu from the dialer pad and if it isn't on MTP + ADB then change it and reboot your phone and reconnect the device.
Dial pad for usb menu numbers:
4.2 *#7284#
4.3 *#0808#
4.4 *#0808#
Dial ##3424# then select CDMA modem, then qualcomm USB settings from there select MTP and hit ok for S4 Mini users
I recommend Airdroid for wirelessly transferring your files.
Thanks,
Pankaj
I just spent HOURS on Google trying to figure this out. More than likely this is the answer, somehow your Qualcomm Modem settings got changed.
If you are using Android 4.3 open the dial pad and dial *#0808#
Android 4.2 *#7284#
then under Qualcomm USB or USB settings it should be on MTP or MTP+ADB, it was probably on RMNET + DM + MODEM. Make the change and choose OK.
All should be fine now.
Sources: enable mtp as default usb connection | Verizon Samsung Galaxy S III | XDA Forums
need help finding the usb (qualcomm usb sett… | AT&T, Rogers, Bell, Telus Samsung Galaxy S III | XDA Forums
thank you thank you thank youMake sure you are using the Galaxy S4 cable that came with the phone.
Remove your battery and sim card and restart your phone may also work.
If that doesn't work try debugging mode. Go to settings - More options - About device - Click device number 7 times.
Then go back to developer options and make sure it is turned on in the top right hand corner and then scroll down to USB debugging turn it on and restart your phone.
The other option is to us the usb menu from the dialer pad and if it isn't on MTP + ADB then change it and reboot your phone and reconnect the device.
Dial pad for usb menu numbers:
4.2 *#7284#
4.3 *#0808#
4.4 *#0808#
Dial ##3424# then select CDMA modem, then qualcomm USB settings from there select MTP and hit ok for S4 Mini users
I recommend Airdroid for wirelessly transferring your files.
Thanks,
Pankaj
Wow. I joined just to say thank you.I just spent HOURS on Google trying to figure this out. More than likely this is the answer, somehow your Qualcomm Modem settings got changed.
If you are using Android 4.3 open the dial pad and dial *#0808#
Android 4.2 *#7284#
then under Qualcomm USB or USB settings it should be on MTP or MTP+ADB, it was probably on RMNET + DM + MODEM. Make the change and choose OK.
What baseband/build number are you on?Wow. I joined just to say thank you.
Like you I spent a couple hours on this and then came across your solution. THANK YOU!
- Matt
PS: I had Android 4.4.2 and the *#0808# code still worked.