Автор - LordRevor32
Today, the use of a mobile phone in human life is very great. Using this device, we can at any time quickly contact our relatives and friends, work colleagues, to find out the information we are interested in. You do not need to remember the phone number of a friend who has not been dialed for a long time, the notebook of a mobile phone is always at hand. In addition to contacts, many people store a lot of other information on the phone - they write down their ideas and thoughts, credit card numbers, important dates, various files, etc. That is, the phone replaces our notebook. A mobile phone is an irreplaceable thing in a person’s life, it benefits those who value their time and are not ready to waste it. Imagine how much we would spend time searching for things we suddenly needed if this wonderful invention did not lie in our pockets. And the main advantage of a mobile phone is that often it’s precisely mobile phones that save lives, protect them from danger and help in difficult situations.
-an irreplaceable thing - незаменимая вещь.
"precisely mobile phones that save lives
..."
-Precisely - именно...(телефон сохранил жизни...)
Все остальные слова в тексте не сложные, как я считаю.