The Apple site is up, but they are only taking orders for Sprint phones if you want to replace an existing phone. For new customers or those wanting to add a line, they have you check a box, hit continue and it will then tell you when you can come to a store and order one. But nothing happens when you click continue. The Sprint site is down now and unreachable.
Got through on Sprint's website a few minutes ago, flew through the site with no problems. However I had to find a back way in through the maintnence page by clicking the show all content tab at the bottom of the page. After that you have to click on shop at the top then click on see all phones underneath the phones header. hope this helps at all.