Welcome to the forums!
What a bummer with a new phone.
I think these cats are 100% right - it's a faulty unit, don't fight it.
However - in my experience, the first thing they do when you take it back is a factory data reset to check things - that clears out all apps, data, your settings - and those wonderful Android caches. When the caches are hosed, anything can happen.
Because I once got a sealed, absolutely brand-new for-sure phone once with dirty caches, right from the factory, I've taken to starting out with any new phone with a factory data reset.
There's probably a one-in-a-zillion chance that this is that, but it won't hurt to try.
Do that, when it comes up, it'll want your Gmail address to start over again - give it that, but don't install anything else. Just give it a spin. If it's still hosed, you know you've done your best and it has to be hardware.
Check your contacts are still safe on the web via Gmail and backup anything you put on and want (like pictures or whatever) before
doing the factory data reset.
Before returning to shop/vendor, factory data reset again, clear out everything for your privacy and let them know that you did that and it didn't fix the problem.
Let us know what happens, best luck!
Originally Posted by Poweranimals
Can't you take it into your nearest Sprint store?
Pretty well guarantee that the answer to that is no, not a Sprint phone.