Suggestion regarding improving speed of Huawei p8 lite

How much space i should have to create so that my phone huawei p8 lite work smoother

It doesn't depend on space brother.
Uninstall useless apps that you don't use or use greenify and hibernate the apps. Battery life will be improved and phone will run smoothly.

Anmolvrm said:

It doesn't depend on space brother.
Uninstall useless apps that you don't use or use greenify and hibernate the apps. Battery life will be improved and phone will run smoothly.

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I agree with this responses, I just want to add some more points to improve speed
*Don't keep too many useless apps
*Always use your phone in battery saver mode
*Don't enable push notifications
*Keep using file cleaner, "Google files" is a great app for this