When I wanted something when I was young, my parents treated me somewhat like an adult -- if I wanted something, I had to either save up money for it, or ask for it on special occasions (birthday, Christmas, etc). If I owned it, they also respected my ownership/privacy over it. Because of this, I feel like I grew up with a good sense of judgement, and a feeling like I could be trusted.
When I look at this list of rules with my "younger" eyes, I see a leash -- this isn't so much a present for me as much as an additional way to keep tabs/hold authority over for the mother. Children need to feel like they have some privacy, and I'm sorry, but knowing your parents can log in and see everything your doing, along with a laundry list of things you can't do makes things the kid might find fun suddenly an experience in anxiety.
What I want to know is, if the kid said no, and used his personal savings/worked a job to get his own phone, would the mom still have this list of things he would need to do, even if he never asked for a dime of help? My guess is yes -- which is why I think this isn't so much the mom helping her son as much as it is her helping herself.