Ah, the constant struggle of being a parent who loves electronics but doesn't want a zombie child. We limit our 3 year old son to 0-30 minutes of screen time a day and he never demands the phone or tablet like I see other kids doing at the grocery store or restaurant. He also loves playing outside more than anything in the world. We spend our time together building stuff with Legos, racing cars, reading books, and wrestling.
Obviously these devices are everywhere and our children will need to know how to use them to function in society, but they don't need much time to adapt. They are far more facile and their brains have crazy plasticity compared to us adults. I do have to sacrifice my own screen time so that I don't come off as a hypocrite, but that's okay because I'll never get him back at this age again. We can play plenty of videogames and watch movies when he's older.
Eventually most kids will probably transition to several hours a day of screen time, but I think delaying that as long as possible is a good thing.