Samsung Galaxy S4 I9505 Handsfree Problem Repairing Solutions are available in the following article. Also you will find Samsung GT-I9505 Headphone Ways and Jumpers information in the diagrams further in this post.
Reasons of Problems
Your head phones / ear phones might be faulty.
Pins might have lost continuity or connections with their respective coils, capacitors or diodes.
The problem also arises due to lose contact between audio jack strip and the audio jack’s on-board connector.
Audio Jack in-turn might have become faulty, due to dust, water damage, physical damage or due to common wear and tear.
The very first thing that you need to do is to remove and re-fix audio jack strip and check, as most of the time the only problem is the loose contact between Audio Jack strip and Audio Jack’s on-board connector. Now check with any other working Audio Jack, as most of the time your Audio Jack is faulty, and the only thing that you can do in order to resolve this issue is to replace it with a working one.
All the above steps are surely going to solve the problem, in case any of the capacitor or coil is found to be faulty then replace it immediately, as there is no other solution than that. Normally Audio Jack problem in Nokia Lumia 800 doesn’t occur, but when it does a few simple steps are quite enough in order to resolve this issue in the best possible manner.
Samsung GT-I9505 Handsfree Solution Jumper Problem Ways Handsfree Not Working
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