Changing to PTP MTP from charging mode? So now, I just plugged my phone which is a Samsung Galaxy J2 Prime (SM-G532G), a notification pops up if I want an MTP or PTP devices, since I am charing I chose Charging on USB mode. Now when I plugged my phone that notification is nowhere in sight so I cannot change back to PTP or MTP.

[EDIT]
Just like to point out one thing. I've been using this same exact cable for software development purporses so yes it is working when I use MTP and for data transfer. I just don't have the option anymore to switch from USB Charging mode to either MTP to PTP.

Any ideas?

Phone:
- Samsung Galaxy J2 Prime (SM-G532G)
- Android 6.0.1

Thanks!
First go this path:
    About Device --> Software Info --> Click to Build Number up to enable Developet option in mobile.

Then go to Setting and open this path:
    Developer Option --> USB Configuration --> Change mode from Charging to MTP.