I would suggest you to read some books about computers and phones to increase your understanding of this topic. Also, you have to make sure that there is no plagiarism because your mark may be affected.
It is important to note that I agree with the idea that they are capable of saving a lot of time. An ability to make adjustments to a document when it is necessary is highly valuable and needs to be utilized.
Computers are incredibly helpful because you may find almost any information that you need with a use of keywords. Phones are also useful because they allow an individual to have fast conversations most of the time.