This is really little eng work. We just need to figure out the right wording for this. Gordon, assigning this to you. 

Sent email to Shimi for thoughts and cc'd you.

Does the prompt contain a link to install/update the keyboard? A search on Play Store for "Daydream Keyboard" yielded only Google VR Services. 

Either way, I think "To use the keyboard," is the right starting phrase, since the user has done something to trigger the keyboard but no keyboard shows. 

E.g. "To use the keyboard, install or update Google VR Services"

I know that's a bit long; perhaps use just "update" instead of "install or update"?

Here's what the prompt looks like (attached).  If you click CONTINUE, the UI fades, and the user gets the DOFF screen, after which they're at the 2D Play Store DD Keyboard install screen.

To my knowledge, if the keyboard isn't installed, we can't enter VR at all anymore.  Therefore, "update" seems better (and shorter, as you said).

Daydream Keyboard is actually the app name.  I'm not sure why you're not seeing it.  That brings us to: "To use the keyboard, update Daydream Keyboard".

This string is a bit stuttery on the word keyboard, but it's concise.  Back to srahim@ for the final call.

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	keyboard-prompt.png 399 KB View Download

I did a bit of exploration, here's a revision to address the repetition and also add a bit of clarity without excess words:

"To type text, update the Daydream Keyboard app"

Gordon & Chris, how does that look to you?