Lenovo Vibe P1m

I am using last two month Lenovo vibe p1m I am facing some problem in sound .It is disturbing me .Battery back up is ultimate and photo picture quality is very good .Ram speed 2gb is faster and it has The phone comes with a 5.00-inch touchscreen display with a resolution of 720 pixels by 1280 pixels at a PPI of 293 pixels per inch. Lenovo Vibe P1m price in India starts from Rs. 6999. The Lenovo Vibe P1m is powered by 1GHz quad-core MediaTek MT6735 processor and it comes with 2GB of RAM. The phone packs 16GB of internal storage that can be expanded up to 32GB via a microSD card. As far as the cameras are concerned, the Lenovo Vibe P1m packs a 8-megapixel primary camera on the rear and a 5-megapixel front shooter for selfies