Hmmm...it's not hard to prove a phone is yours. Have them call it. You know the number and you likely have voicemail, numbers programmed in...maybe texts, saved voicemails, photos, etc. We can have our phones- no problem. I keep mine out so I can call the sup when we need him (otherwise we may not see one all night). Well, that and so I can look at the time. However, I get annoyed when I see auditors standing on the belts TALKING on their phones instead of doing their jobs. It's not like they do a lot as it is. They became union and since then they still don't feel they have to lift a finger to help out with anything- even the ones who moved into the position who were union to start with. I've also seen people playing games on their phones while waiting for flow.