Smart phone is the most essential part of our life now a days.when you wake up and when you go to your bed the only one thing is always with you,not even your wife is always with you.This is a luxurious product which defines who you are.You will never find a celebrity,sports icon,billionaire carry a cheap mobile phone.So which brand defines you better and that mobile brand should better specification,durability,net connectivity and no hanging,lagging problem along with better price.You have to find out the key specification which processor inside,whats the GPU,battery backup,download speeds,upload speed above all whats the price.You also have to know other mobile brands strong point and weak point.
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From @khaledshaifullah