How to test my site is optimized for all devices?

[vk_lord]

How to test my site is optimized for all devices? Recently I bought a new theme which is very responsive and takes all devices. But I am not sure it compatible with all devices? How to test it?

I think that's a foolish question to ask.

If the vendor is already saying that the theme is optimized for all devices then its okay. Haven't you bought the theme from reliable vendor in the first place?

Why don't you check up manually with all devices. Its the best answer I cant tell you right now.

I agree check them manually.