Developer option isn't working.

[Shadow7master]

When I tapped build number 7 times it saying that developer mode is already enabled and when I check settings it is not there so how could I fix this.

[Sidhabhi]

If you bought your device through Samsung finance+, then wait till emi gets completed

[Shadow7master]

What's emi and this problem is from 3years

[Sidhabhi]

3 years..you are facing this problem from 3 years?? Then,please visit service center and get your device checked