True, I didn’t address that.
I don’t think at this point it’s so much a battle; at least in chutz la’aretz, I see many smartphones in chareidi communities. The issue is education, that it’s dangerous and therefore precautions should be taken.
As others have pointed out, the danger is indeed great, so even should you choose to call it a battle, I don’t see why, other than the fact that it’s uncomfortable for you since you have one, you think this particular battle should be the one given up.