I know some people use an old phone or w cheap phone as a burner. Me on the other hand wanted to see SPs that allow filming. So, I ended up getting latest iPhone from Apple store. I bought cash. Then bought sim card from Dollarama: lucky mobile $4. Then I go to Shell gas station, pay cash to top up, get a code to upload credit. Lucky mobile you can add credit card, but you don’t since need for discretion. I bought a $35/m plan with some data. However, i use my personal phone as a hotspot when using burner phone. When registration of lucky, i can use a fake name unlike the bigger cell ph companies that require ID and credit check.