I put on tempered glass screen protector on my yureka. After putting the glass protector, screen was going blank during calls incoming or outgoing. I was not able to see who is calling nor was able to do anything when call was on.

After some google found this solution.

Plz dial
*#*#7769#*#*
And then click start

This will recalibrate the proximity sensor. After that no issues, phone is behaving as it should.

I searched xda and didn't find any thread related to this. If it is already posted, please lock this thread.

Hello! So i was following, galaxys4root (DOT) com/galaxy-s4-tutorials/how-to-unlock-sim-on-sprint-galaxy-s4
This link before i found the one on this site, and im stuck on the step where i type in getprop ril.MSL i only get a blank space
i.imgur.com/ZaKBhQO (DOT) jpg
here a screenshot of the cmd line
I typed in the wrong code first before running the command

In the tutorial it had me downgrade my firmware and in the one on this site it doesn't say to do that, should i have not done that?

Samsung Galaxy S4 Sprint