Samsung cell phone cannot be connected to PC after deleting some application

Hi Expert

The cell phone Samsung memory is almost full. After I deleted some applications, the cell phone cannot be connected to PC.
The version is Android 5.0.1 SCH-i545

Any Experts can give some suggestions? Thank you
eemoonAsked:
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JohnBusiness Consultant (Owner)Commented:
Did you delete the applications from the phone or the PC?   You said "directly from the phone"

I think you may have deleted something you should not have deleted, so you need to restore from a backup.
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JohnBusiness Consultant (Owner)Commented:
Do you have a backup you can restore from?  That is what I would try.
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eemoonAuthor Commented:
Thank you for your fast reply. i dont know that. Maybe i can try to restore from backup. but how can i know i have that backup? i did not backup before
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akbCommented:
Did you delete the applications from the phone or the PC?
Does anything happen at all when you connect the phone to the PC? Any beeps?
Is the phone unlocked - you must swipe and key your passcode or pattern or whatever before the phone will connect to your PC.
Has the phone been rooted?
What model is the phone?
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eemoonAuthor Commented:
Thanks for your question
Did you delete the applications from the phone or the PC? directly from the phone
Does anything happen at all when you connect the phone to the PC? Any beeps?
    when phone cable is connected to PC, the phone can still be charged, but the PC shows the device is disconnected, and please       check USB etc
Is the phone unlocked - you must swipe and key your passcode or pattern or whatever before the phone will connect to your PC.
yes, unlocked
Has the phone been rooted? no
What model is the phone?  Android 5.0.1 SCH-i545
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akbCommented:
So that is a Samsung Galaxy S4?
What apps did you delete? I'm not aware of any which would cause this problem when deleted. If the phone isn't rooted you shouldn't be able to delete apps which could cause this problem.
Try a different USB port on the PC. Also, try a different USB cable.
I had a similar problem and it turned out the usb connector on the phone was damaged. Does it seem loose?
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akbCommented:
Thanks for the points. Did you solve the issue? If so, how?
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JohnBusiness Consultant (Owner)Commented:
Yes. I hope you were able to restore from a backup.
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