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The number of mobile phone users around the world is very high. Why not, mobile phones make today’s fast-paced life much easier. Although we use mobile phones for many purposes, one of its important functions is to keep people connected through calling. However, these days it is not just relatives or friends who call us….

The number of mobile phone users is very high all over the world. And why not, mobile phone makes today’s fast-paced life very easy. Although we use mobile phone for many purposes, but one of its important functions is to keep people connected through calling. However, nowadays it is not only relatives or friends who…