As the phones evolve, it seems like many people are having problems with the speed. This is due to the increasing processing power that your super phone needs to perform all the neat and dandy actions that lead your life to the utmost convenience.
The Iphone 6 is no exception, and it is bound to slow down with increased storage from photos, videos, music, and apps. There is however a simple trick you can do in the settings to boost your speed by a decent amount.
Check out this very helpful Youtube video by Fliptroniks to show you step by step what to do: