Communication in a high tech world

There're a lot of good effects in a high tech world, but there're also bad effects in it.

These days almost all people have own cell phones even if a child. When I was an elementary student, I didn't have my own cell phone and few people also have their own cell phone. However I often see even children (maybe under 12 years old) have their cell phone. In fact cell phone is very convenient tools you know. But I think it's not good to use too often. If you use them for a long time, you can't communicate with people face to face. Moreover if you use e-mails many times, your ability of Japanese, for example kanji, will decrease. Many foreigners look face to face when they communicate with people. I think it is very important when we do so. High tech world brings us many good effects, but we had not better to rely on too much.