iPhone speaker volume low
i bought new iphone 6s 64GB in last week and observed that earpiece volume is quite low.i am unable to hear calls properly.volume is ok with bluetooth handsfree and loud speaker and only has issue with earpiece.I checked all settings but nothing is helpful so please help as i am highly annoyed with poor performance of phone.i did following adjustments but nothing worked for me
1. Enable hearig mode
2. checked volume options
3. restart my phone
4. latest software is already installed
if some one has solution please share otherwise i am thinking to switch back to android phone as i was not expecting this issue in iphone.
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iPhone 6s, iOS 9.3.2