[Android General] johnniedroid:
Strange audio pulse with earphone and bluetooth strenght

Hello all!

I've been trying to read all the posts in this thread the last two days, but it is extremely dense. I tried to find someone with the same problem as me, but the only post I saw about this was one of the few nobody replied.

I've bought a i9220 as described in this thread and everything works extremely great (I mean, I don't even want to change anything 'cuz all works fine).

The only problems I'm having are not really big problems, but I'd like to know if it is "solvable" - I mean, maybe a little change in engineering mode or drivers can fix it.

Well, let's go to the point:

1. Generic question, I think I already read the answer somewhere from sas, but just to confirm: I need a special earphone with longer audiojack to plug it on my device? 'Cuz the i9220 cannot grasp any of the earphones I tested, all of them stays loose and this is annoying when I want to put it on my pocket and walk!

2. I feel/hear a strange "pulse" in the right earphone when I plug it into the device and unlock it (when it gets locked, it stops. UPDATE: actually it DO NOT stop completely, but comes back randomly and for small periods of time). I saw a guy asking about it but nobody answered him. Anybody else noticed this or it only happens to some? It is possible to solve this - remove this periodic "sound" - with firmware change or through engineering mode?

3. Because I had problems with the audiojacks, I tried to listen to music using an earphone with bluetooth. This would solve my problem of finding a correct earphone. All worked, but I got a noisy music (not so bad that I couldn't hear the music, but high enough to bother me). The bluetooth earphone works fine with my computer and another smartphone, so the problem is problably with i9220's bluetooth signal. Anyone has any tips about this? Is there a way to improve its quality through software?

Thank you very very much. This BIG thread has enlightened lots of doubts I had, and probably is going to help lots of other people who never writes here!

And a special thanks to sas, that helped me even without knowing! I'm glad for all your effort and instructions! :)

UPDATE:

About the problem #2 (audio pulsing, or whatever I can call that), maybe it helps to know that:

- The sound is NOT affected by the volume. It is always constant.

- The frequency of the "pulses" is constant, no matter what.

- The "pulses" do not stop when the music is playing, and it is possible to feel/hear then when using the lowest volume - although it can demand a little attention.

- When I stop the music and lock the phone, the "pulses" stop immediately. While the phone is locked, it happens randomly and for small periods of time (1 second).

- When I press the button to activate the phone, the "pulses" restart immediately and enters in a continuos mode while the phone is being used.

And one last doubt I had and was not clearly solved by reading the thread (maybe I missed something): is it possible to run android 4.1 on i9220? Probably yes, but: the files to update it are already available? If so and if someone has it working, can you please share with us a tutorial?

Thanks to all!