Fwiw, the two feed into each other. I read this same thing somewhere else before and have since tried to not take my phone with me into the bathroom. I started doing that because I would take a lot of time in there. But once I have my phone, if I start reading something a bit too long, I could easily spend 20 mins in there before realising it.

And trash reporting for repeating it

Actually it does cause hemorrhoids.

The position of sitting in the toilet without support for the pelvic floor adds extra pressure to the related vein and vascularity, creating hemorrhoids.

This was discussed in r/science yesterday.

So, again: reading cellphones do not cause hemorrhoids. Staying too long on the toilet does.

The act of reading the cellphone doesn't.

The act of reading the cellphone while sitting on the toilet causing you to lose track of time does.