Currently, technology is very complex but makes our life easier. Special smartphones because you have a little PC in your hands and you can use it for all you can think.
I have a phone with an app that calculates and estimates how many times I check it during the day and resumes for me onces a week. It depends on how many time I have to work, or if I have more free time.
During the weekend, I think that I spend lot of time with mobile; on the opposite, along the week I don´t use it. I used to spend time on revise social media and apps for communication. Also, the camera is another option that I used, special when I go for a walk or when I go out. For this reasons, I think I´m not addicted.
About ban mobile phones for students, I´m totally agree with this. Researchs shows that the brain of the students grows up until 15 years old; so If you interrupt this process with the effects of technology (the addiction because the effects for using), they don´t develop capacities such us reasoning, and this will be a problem when they are adults.