In another topic about where to carry a knife ( Old Dog Learns New Trick), we were talking about where you carry your phone.
A lot of people carry their phone, knife, and firearm on their dominant side.
When I did the Proving Ground I learned the hard way that I can’t draw my firearm and be on my phone in my right hand at the same time. I’ve started carrying my phone in my left pocket instead now. That way I don’t have any jumbling to do when I have to call 911 if there’s an incident.
That took a lot of practice! I’ve had a cell phone longer than I’ve carried so it took a long time to get used to using my phone with my left hand.