Frankly, parents who get pissed when their spoiled brats' cell phones are taken away can shove it. Cell phones are a privilege, not a necessity.
Same goes for computers and internet access. If you start relying on those you could just as well get rid of the teachers or the school itself. To this day, I regret having heavily relied on calculators to do simple math for me because the convenience prevented me from developing that skill. And since I've exclusively started using my computer to write things down I've lost my ability to write legibly.
What's stopping you from leaning that skill now? Or going back to writing things down by hand?