When was the last time that you dialed a phone number from memory? It probably depends on how long you've used technology like a cellphone. While some old people can recall the days of memorizing phone numbers, it's possible that teenagers have never had to remember any telephone numbers. Smartphones offer quick and easy ways for keeping information. There is no need to memorize anything. But this might not be true.
As smartphones develop, more and more users' dependency on them may cause terrible results. "Digital dementia" are the words used by experts to describe some of these results. Some doctors like Jim Kwik, an expert in memory improvement, are taking a closer look at this result. Kwik describes digital dementia like this: "…we're offering our brains to our smart devices." He continues, "We're depending on our smartphones so heavily that our smartphones are making us stupid." As medical studies show the drop in memory and learning skills among smartphone users, a connection is made between symptoms（症状）which are connected with dementia.
The seriousness of overuse becomes clear when you consider just how young smartphone users are becoming. The writer and speaker Simon Sink points out that young minds are not ready for it and that their minds cannot deal with the problems. So, smartphone screens and sounds lead to addiction more often than before. So now parents, teachers and managers should try to help the young people deal with this kind of addiction.
In fact, smartphones aren't all bad. They're really easy to use, and the connectivity they create cannot be thought wrong. The key is finding out how to make a balance between usage and nonuse. We should control our cellphone use, making sure when and where we can use cellphones.
