How to enable voice focus in samsung f62

I purchased this phone 12 th july 2021From today phone was not chargedCharger is okThis is my second phone samsung m30s last year same issueWhat samsung goes on

What's benifit in student offersAnd which standards student is eligible

Which mobile is best under 25000.rs

My friend purchase m31 after 14 months phone only samsung startup screen appear when ask about service center they told there is motherboard problem to replace this motherboard 7 thousandWho is responsible for such issues samsung or userSamsung f62...