how to increase Samsung galaxy j7 prime mobile speed

first go to mobile settings then
click <about device> after that
click <software info> then seven 
click <build number>
(After seven click on build number,
the Developer option will be turned on)
come back again to mobile settings.
In the settings below you will see a
developer option tab.then
click <developer option tab>
After going into the developer option,
you will see three tabs
window animation scale,
 transition animation scale
and animator duration scale.
These three tab by
clicking on them off will.
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