Why do videos play show and have a lot of buffering?

[AC Question]

slow video alot of buffering only have phone 3 months

phone started being real slow on video and other apps

 

[B. Diddy]

Re: slow video alot of buffering only have phone 3 months

Welcome to Android Central! Which phone? Are these streaming videos or locally stored videos? If streaming, is it slow on both wi-fi and mobile data?