When children get their first smartphone, parents should take important precautions right away. On the one hand, rules are needed for the timing of use of the devices so that the children don't spend hours on YouTube videos and games. On the other hand, settings should be made that ensure that you can use the smartphones safely. Parents should take some time to set up the cell phone. The possible settings differ depending on whether it is an Apple iPhone or an Android smartphone from another manufacturer. However, parents should not only rely on technical solutions.