I bought my xperia m2 dual just 2 months ago. Everything was perfect in my opinion,and i don't even complain about camera quality. But I'm facing the same issue as above now. And it's very disturbing. At first,the speaker sound was good,loud and clear. But now i barely hear notification and ringtones eventhough the volume is on max. I even can't use it as an alarm anymore as the sound was too low. I don't know if this is caused by upgrading to lollipop, but i've tried every suggestion on google or on this forum with no result. My last try will be tobring my xperia m2 dual to a service support,but i'm not eager to do so as they took months to fix it with unqestionable result. Could you help me Sony?
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