I actually purchased 2 of these phones, one for my 13 year old daughter and one for myself. I personally do not like Apple products very much, so have never had an iPhone. These phones appealed because the use the A T & T GoPhone service, the pay as you go plan, which does free you up from a contract.
To look at this is a very good looking phone, nice and light with a big bright screen. If you have used Windows 8 on a PC the screen layout will look very familiar too. If you have not there is a bit of learning curve but not too steep, playing around for a while should get you familiar with everything, especially since the instruction booklet is neither very clear or very helpful!
In terms of call quality it is pretty good. The phone's volume is better than some I have tried and you can actually hear a caller very well if you put the phone on speaker.
The number of apps available is more extensive than I had imagined it would be. The built in Nokia Go apps for GPS, Transit and Maps are excellent and better than the similar apps offered in the Windows app store. In terms of games most of the popular Android games are available in a Windows version and apps like Facebook, Pandora, YouTube, Netflix etc are as well. I also love the fact that Windows Office can be installed on the phone and, if you are pretty good with a cellphone touchscreen keyboard works well.
One thing that some people may dislike is the fact that there is only a rear facing camera but this is an entry level smartphone and the camera quality is pretty good. Harder to take a 'selfie' but it can be done.
Also of a concern to my daughter was that the music from her iPod, which is of course in iTunes, would not be able to be transferred to the Nokia. Nothing in any official instructions will tell you how to do this, but I found a couple of videos on YouTube that showed you how and basically it is simply a matter of using the phone's USB cable to connect it to your PC, opening iTunes and then click and dragging the music files to the phone's music folder.
For a phone that costs around $75 this is a great choice, especially if you are buying for a teen as it has everything they want, easy texting, lots of games and lots of social media apps and if they happen to break/lose it it will not be such a tragedy as losing a $500 iPhone! The cost of service is very reasonable too. I am paying $40 per month for unlimited talk & text with 200G of data, which is plenty as in many cases you can switch to wi-fi instead.