downloaded latest update got a server is temporarily unavailable try connecting your I pad to iTunes to activate it if problem persist
contact Apple support.
iPad, iOS 9.3, updated 3-23-16
See this support document for Apple's statement. If you can't activate your iPhone, iPad, or iPod touch after installing a software update - Apple Support
This is a known problem/glitch.
Apple, I believe, has, unofficially, acknowledged and recognized this issue with activation server difficulties with certain iPad models and have stated that they are working on this issue and that it will be resolved as soon as possible.
Hopefully sooner.
It is affecting mostly iPad 2 models, but iPad 3, 4 and 1st gen. iPad Minis are being affected from this, as well.
There are some workaround solutions, but, unfortunately, these do not work for every iDevice affected.
This is clearly an Apple problem/issue that they time to sort out and solve.
Apple just recently has offered this possible solution.
A solution for Activation Server Lock on iOS 9.3.
installed the latest update now all I get is server unavailable try again could not activate
