hi guys here is my case: (i.e. Unbalanced audio in landscape video recordings, right channel is loud, left is too dim )
-This is from the Colombia technical service-
1st repairment: technical service replaced all or some mics, returned the phone. Problem persists.
2nd time, Sent the phone again, they returned it unrepaired on the grounds of "the phone approved all the standard tests", "mic levels are normal on all mics", and then some bs like "you can't record stereo on this phone only mono cause the specs sheet on the phone doesn't say that" are you kidding me?
I'll send them back again in a few days (have to wait ten days according to online support), but I think meanwhile I'll run some tests as in my case that could be a software issue. For example in portrait mode the audio seems fine and with good volume levels, and this uses the presumed not working top mic.