TH-11: About my keitai

I have a keitai. My keitai's kind is smartphone. I use Xperia Z by SONY. In my keitai, a lot of information. For example, my telephone number, address, or my family and friend's them. It's very important me. Also, I can capture memories by camera. I like it very much. However, I think that using keitai too much isn't good. We have to do other things, like homework, part-time jobs, club activities, and other things. So, I'm careful when I use my keitai. I want to use keitai more efficient.

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