Banning Phones From Schools

I don't hate the idea of banning phones from schools, but there are some things that I feel that the bill's (which would have made it so phones were banned during the school day) writers might have failed to take into consideration.

I'm going to start with what upsides this may have:

What you do in school affects your home life. I go to a private school that does not allow phones during the school day unless you are permitted by a teacher. My friend, who attends the same school I do, took driver's ed at a different school that allowed phones during the school day. My friend told me how they were so used to not using phones during lessons that they were able to focus on what the instructor was saying. The other students, who went to schools that allowed phones, were all on their phones. Allowing phones during lessons could affect students' abilities to focus on whatever lecture they are receiving.

Now for the downsides (this is just for me, personally, and from what I've seen):

Some students can't easily contact parents/guardians via their computers. If someone has a MacBook and an iPhone, then you can text from your computer, I don't know how Windows computers work, but I know from personal experience that the only way to contact people via a Chromebook is through email. If you don't have your phone, and an emergency happens during school, having your phone with you will make it easier for your parent/guardian to reach you. 

I am a visually impaired student. I don't tend to rely on my phone as a form of assistive technology, but I do still use it. A part of my visual impairment is I am nearsighted, so if we are playing Kahoot! or something in class, I will use my phone as a way of zooming in on the questions and answers that are on the board and only on the board (because Kahoot! can be extremely flawed). Another part of my visual impairment is I am completely colorblind. I cannot see color at all; everything is black, white, and grey. I tend to use my phone for color scanning (I have an app that tells me the color of things). 

The teachers at my school are very flexible with phones, so long as you ask permission before using them and have a good reason, they tend not to care. I know that for some schools this may not be the case. Some good things could come out of banning phones from schools. Banning phones could make it so students are focused in class, but something having a phone taught me is that self-control is everything. If students are using their phones to mess around (this does not count for contacting friends or family in emergencies) during lessons, then that usually isn't the teacher's fault, it's their lack of control. Banning phones could also make it much more difficult for those with disabilities to use assistive technology (yes, phones count as assistive technology).