17 year old daughter is glued to her phone all the time. It is probably not doing her mental health any favours and it is certainly affecting her school work. I would be of the opinion usually that, at 17, she is old enough to make decisions that affect her future herself. Or at least have a big input into them but is she too old for me to be allowing her, say two hours an evening with her phone? She does not want to work (part time job) or study just wants to hide in her room with her phone.