It supposedly fits the iPhone 6, which is bigger than the note 3. Just wanna make sure

The largest phone the pip boy fits is the Galaxy S5 which measures 5.59x2.85x0.32. The Note 3 measures 5.95x3.12x0.33 so it's too big for the pip boy. You can get a visual comparison at phonearena.com or by doing a google search for "compare phone sizes".

These are the measurements of the Iphone 6:

Height:

138.1 mm (5.44 inches)

Width:

67.0 mm (2.64 inches)

Depth:

6.9 mm (0.27 inch)

Now if your Note 3 is bigger than any of what Ive listed above numerically then no your Note 3 will not fit into the Pipboy.

I think I'm going to get like a Droid DNA or something similar to use with the pip boy. Should be able to run the app. unless they make a wp8 app.

Damn! I might have to cancel my pip-boy preorder. I could try to make it fit, or just get another phone without activating it

Just get yourself a cheap second hand iPhone or Android handset and stick a PAYG sim in it