信和电话是两种不同的信息工具.信的历史十分久远,而电话是信息时代发明的,历史并不长.电话十分方便,使相隔很远的人们能够通话,聊天,问答.而信不方便,需要很长的时间.电话费比较贵,尤其是长途电话,而信真的很便宜.所以我认为信和电话各有自己的好处.

Letter and telephone are two different information tools.Letter has a long history,while telephone was invented only in information era which was not very long ago.Telephone is very convenient,with it people who are in distant places can communicate ,talk and so on.But letter is not very convenient because it needs a long time.However,the fee of telephone is very expensive,especially IP call.And letter is very cheap.Therefore I think both letter and telephone have their own advantages.