Better screen resolution
Smaller size (mostly)
New camera
As the large screen iPad has developed, changes occurred in three major areas: # Screen resolution improved # Memory improved # CPU (CentralProcessing Unit) speed and capability improved.
There has been no improved iPad introduced since the 3rd Generation (New iPad) was introduced on March 7, 2012.
There were a couple of major improvements from the iPad 3 to the iPad 4. The biggest was the improved performance of the FaceTime camera. Additionally, the iPad 4 retina display and speed were marked improvements.
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In some ways iPad 2 is better because it's big and in some ways iPad mini is better because the speed is better. It actually depends on you.
in what ways can professional ethics in mental health improved?
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Yes there are. And it makes it a lot easier in some ways and in other ways its not so easy. What if your iPad breaks or messes up. But then there are pluses because all your books will be at your finger tips and you can take them anywhere if they are on your iPad.
Initially the iPad was bombarded with reports of poor Wi-Fi connectivity, however Apple has addressed many of those issues. The latest iPad's have much improved Wi-Fi connectivity.
The iPad has gotten thinner (since the first generation), introduced cameras (that have improved), introduced faster video and processors and introduced screens with much higher resolutions.