This is a huge trouble... MY phone samsung m30 is showing notification of disconnected and conneted usb when no usb is connected and the phone is not charging too .. plz help and reply soon..
Dear Samsung Member,
Greetings from Samsung Customer Support!
Please perform the below mentioned steps to resolve the issue:
Open samsung member app > Get Help > Interactive check > Choose the phone hardware you want to check and optimize performance(eg. ports).
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
Thank you for writing to Samsung.
Samsung Customer Support