Wonderful phone. Given the features you get for the price you pay, any user will find it a great deal, even with the specs on it.
Apple and Android flagship users may not find themselves swayed to use this particular device but it will do great for anyone looking for something that takes great photos, has descent storage space, good screen, and is looking for a Windows Mobile experience.

Network Connection wise, don't expect too much as it doesn't come with LTE but the 3G and Wifi will get the job done, however, as with all Windows phones they need good quality network connections so don't expect bundles to work as efficiently.
Given the CPU and RAM onboard, you should be able to get just about everything done even with games such as Subway Surfer, but to expect some system lag and an occasional app crash.
Windows platform doesn't vary from device to device so if you've used it on another phone, you should do fine.
As for the screen, pixel density is also not too shabby but if you're looking for crystal clear iPhone type output, I suggest you get an iPhone.
Battery life may get you through a full day with average use, but I recommend you carry a soare if you're a super user of power hungry apps like WhatsApp and various games.
Needless to say beyond that, for the best experience, sift through the App Store to find exactly what you need because chances are, it is actually there.

Pros: Update to Windows Phone 8.1 (10 in future), good camera, descent and expandable storage space, good screen, removable battery.
Cons: Budget-level specs, plasticy feel, no front-facing cam, no flash for rear cam, and as always...not enough apps in the Windows Phone store.

I highly recommend getting this if you are looking to upgrade to a 'smartphone' labeled phone phone but you happen to be on a tight budget, or for that family member that has been bothering you about a gift for Christmas this early in the year...