What class of SD to use

[Android Central Question]

I inserted Sandisk class 4 and phone stated it was slow

 

[Matty]

I inserted Sandisk class 4 and phone stated it was slow

Welcome to AndroidCentral Thanks for the question. In order to record 1080p (Full HD) video. It's required that you have a Speed Class 10 or Class UHS1 MicroSD card.

Here is a diagram that might make things a little easier to understand. If you have any further questions feel free to ask.