All we know that mobile phone is the most a(a) invention of modern science. Nowadays, it is very b(b) for us. At c(c) it is very small and light. d(d) changes have been brought about in e(e) communication by mobile phone. The whole f(f) has now become smaller and g(g) unbelievably in respect of communicating information. But it is h(h) to say that mobile phone has some i(i) too. Over all, it is a great j(j) for mankind.