Because, first of all, the phone is in order to survive watching YouTube.
And the Wi-Fi is to allow you to use your phone.
A torch is not confident enough to start a fire by rubbing wood on an uninhabited island, as it needs a fire to maintain its body temperature.
The knife is for cutting food when I get food to eat on a deserted island.
And the pot is for getting food and boiling it.
The 5 things I will take to a deserted island are my phone, wifi, torch, knife and a pot.
Because, first of all, the phone will be helpful in order to survive watching YouTube.
Then, the Wi-Fi is for me to use my phone.
A torch is not enough to start a fires so I will rub wood on an uninhabited island as the fire can be used to help maintain its body temperature.
The knife is for cutting food when I get food to eat on a deserted island.
And the pot is for cooking food and boiling it.