The vast majority of our devices are now portable. In the past, we used computers and telephones that we had at home or in the office and that never left these spaces. Today everything is different. We carry laptops from place to place, go with them on business trips and on holiday. Obviously, it's absolutely true about phones.
This increases the risk of losing or stealing these devices. And because the person who has just found out that he has lost his device often panicking (it's a very stressful situation) and in the first moments is unable to calmly realize what needs to be done, it is good to have these steps ready.
Here is the checklist
Security for everyone