I am not able to locate these features. (If the attached manual didnt have a mention about these features what on world Nokia thinks a user will be able to locate, search in an android phone and fnd them!!!!)

1 Ringing volume adjustment ascending tone, which was a common feature earlier not to be found
2 Grouping of contacts and assigning a Group ringtone, where is it, i cannot go on allotting individual's with ringtone option,
3 Silent mode which is so common in all mobile Nokia where have kept it
4 Playlist selection and adding how to do it
5 Delivery reports of the sms use to go to a separate folder in this feature rich phone it comes in the inbox, Nokia which developer disabled this feature ask him to send a group sms with 520 and then let him check his inbox for the replies
6 Speed dials, where is this hidden, can't bring it as a tile and keep in the opening page old phones had 9 speed dials, where to place 9 dials
7 many are still complaining whether radio is present or not, even if it is present does it provide stereo playback, Nokia what did you save by disabling stereo
8 Applications once started how to quit them, no button option is there to quit and come out, whether those applications run in the background or shutdown by themself??? how does one come to know?
9 Side buttons volume , power and camera without any inscription, what prevents them from printing the switches name, even the lift switches come with engraving
10 Battery it didnt last for me for 6 hours also, huge let down, though the talk time would have been only 35 minutes on that day
11 Voice recorder, is not there
12 Headset should have the feature to switch to next song, next FM station, where is it
Overall i would say Nokia you have to go a long way, this is not a smart phone, by using it,  in searching the features we are only becoming smart.
Better to avoid this phone