This is definitely not my favorite phone in the world. It's SO much slower than the regular Galaxy S3 and S4s I've had in the past and is lacking alot of functionality that I like to have. After about a month of use the cpu is so bogged down its almost unbearable. Without rooting, I don't recommend.
This is easily the worst phone ive owned, my flip phone was faster then this one. It dies quickly, get very hot when charging, and the camera doesn't focus. Ive had it for a month and I already switched to a different phone.
For the price of this phone it works extremely well. The size is great and big enough to type on. Samsung is usually a good brand and my J3 does the job. If you go through a phone a year like me, I suggest buying a J3 it is great for the price, does the job, good camera!