Why are my computer and iphone so slow?

Ever since last night apps on my iphone 4s have been slow, videos on youtube take forever to load or won't load. My computer won't let youtube videos work. I checked my computer for any type of virus or malware and nothing shows up! I have dish for my computer btw. And Verizon for my iphone 4s. Why did this happen all of a sudden? Its driving me crazy not having a fast working phone. And I just want to go on youtube on my computer. Please help me.everything is fine on my computer except youtube. But 80% of the apps on my phone are SLOW

Clean unused apps in iphone. Defrag, clean temp files and junk files in your laptop.

Some apps use internet connection and youtube also needs decent internet connection… Your internet connection might be slow. Try resetting your router.

Get more RAM on your computer to increase your computer's performance.

Increase your RAM capacity of your computer and also try to reinstall the "OS".
YOUR phone may slow due to un wanted applications or virus effect so un install unwanted one and check antivirus.

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