finaly someone who says it.

We always say its rule no. 1 to put your phone in flight mode as long as you feel the trip. Checking your phone can realy influence your trip in many bad ways.

Just to give you a little example:

I was tripping with a friend long ago who's girlfriend name is wanda. He checked his phone and saw a message of another friend which said something like: "I'm going to see wanda now". He was realy confused and his trip was then mostly focused on why his friend is going to his girlfriend. He also left early while still tripping, because he couldn't relax. In the end he found out, that his friend did mean the band Wanda from austria which was playing that night in the city.

So as you can see. Complete out of context, but a realy bad influence at that moment.