I don't think we're using mobile phones too much.
When people think about if they are doing something too much, they should think about the importance and the need of the thing. Nowadays, mobile phones are a part of people's life. We use mobile phones to chat, to work and to study. Mobile phones make our life efficient and make people get together closely.
When teachers are printing tons of exam papers, do they need to think of if they are using paper too much? When you go shopping to buy the things which are necessary, do you need to think of if you're using money too much?
Why are we using mobile phones? Because we need them. Why aren't we using mobile phones too much? Because it's necessary for us to use them.
Overall, if we're using mobile phones as much as we have to use, it's never been too much.
