Cast on your first colour..
Measure your phone before you knit! Make sure it's not too big or too small.

I use purple, deep blue, green, yellow, orange and red. I don't have light blue so I just went with 6.

Start your new colour by connecting the yarns together.

Knit on...

Measure your phone as you knit. Make sure there's enough room for every colour!

Finish your last colour and cast off.

Now, put your phone inside and sew it up!

Make sure the side is right.
Outside-in and inside-out!

Turn it over.
Now your rainbow cosy is ready!