Long story short, I work with a lot of RF equipment, and it would be really convenient if I could have a phone that I could truly turn OFF instead of having to leave it a million miles away in a shield box. So either one with a true hardware off, if such a thing exists, or one with a battery that can easily be removed and put back in. Thank you.
It's OK if it's an older phone, at the end of the day I just need it for calling and texting.
(I found this question, however it's 3 years old: Android phone with removeable battery, SD Card, USB Host/OTG for ~100 - $150)