I can't print out my etickets from my phone. Will Universal take the email?

Yes

Absolutely.

I would tke a screen shot just in case my wervice wasnt wo good, but yeah as long as they can scan the barcode they will take it.

Yes, as long as they can scan the barcodes from the PDF

This happened eith my parking e-ticket and yes they took it

Like Roy said make sure you open the PDF in the email and make sure you have the barcode visible just before you get to the turnstiles. They won't need to see your tickets at security so put your tickets away until you get past the globe. Also if your cell reception is bad they have free Wi-Fi all through the park and citywalk.

You can show that in mobile, that is fine. Enjoy