Hello nikhils06,
I understand that you have a slight dark spot in the upper right corner of your display. I use my iPhone all the time, so I can understand the concern about the display. If you restart your iPhone, does the dark spot go away, or does it remain there?
Restart your iPhone, iPad, or iPod touch
The following article goes over some display issues and what do to if you don't see your exact issue.
Get help with the display on your iPhone, iPad, or iPod touch
Have a good day!
I understand that you have a slight dark spot in the upper right corner of your display. I use my iPhone all the time, so I can understand the concern about the display. If you restart your iPhone, does the dark spot go away, or does it remain there?
Restart your iPhone, iPad, or iPod touch
The following article goes over some display issues and what do to if you don't see your exact issue.
Get help with the display on your iPhone, iPad, or iPod touch
Have a good day!