When I test the loundspeaker in Xperia Support, I hear all the sound coming from the top speaker, not the bottom one. When I test the earpiece, still the sound comes from top speaker, just with lower volume. In any case, I always hear the test sound coming only from top speaker. If I use 3rd sound test app and test the bottom speaker alone, it is muted, 0 sound. Is my problem hardware or software related?
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