Calculatoars & Cell Phones

Two of the most controversial topics for school age kids is the use of calculators and cell phones.
So, I would like some real feedback from you on both of those.
My personal opinion is cell phones are not necessary and can be more disruptive than productive. During the student's free time, or in between classes would better times for that.
As for calculators, while I was in school, we were only allowed a basic four function calculator, and that was limited at  best. Two reasons, students who are not well adapted to the functions could possibly forget how to do basic four, especially long division. Now, we can't have mathematicians actually forgetting how to do math - you know, without the help of electronic gadgets.  Can you imagine such a day? Picture it, earth in the year 2030 is struck by a major solar blast and wipes out the memory of computers the world over. Far fetched, admittedly, but still. As I was once told, math is not like riding a bicycle. For most people, we don't forget how to ride bikes. Math is easily forgettable. Practice is so important or we tend to get a bit rusty in not time at all. 
However, because our day is so wrapped up in electronics, it is necessary that students be allowed to use them. 
I think, as with anything, there are pros and cons to the use of both of these.  
Ok, now it's your turn. Please click the red comments link below and share your thoughts or strategies on if and when you allow your students the use of either of these educational tools.
​Please do not condemn another's comment.  I look forward to hearing from you.

---