The Sony Xperia Z3 + just has a different design than the Sony Xperia Z3 tabs so you no longer have access to your Sony Xperia Z3 + recharge. In addition, the front camera is improved (increased to 5 megapixels and you have twice as much storage memory (32GB). See the Sony Xperia Z3 + as the deluxe version!
The Sony Xperia Z3 is a (splash) waterproof smartphone, up to 30 minutes long he can hold up to 1.5 meters deep in the water. You can also use underwater Sony Xperia Z3 + for example, to take a picture. Please note that the covers are closed.