Do you keep your old iPhone when you upgrade with Verizon?

I have a iPhone 4S and will be upgrading to the iPhone 6. When I do, I still want to have my old iPhone as a device to jailbreak while I my iPhone 6 secure.

I got a new phone and still have my iPhone 4, so yes you keep your old phone! Just keep it as a backup just in case.

Don't understand your "jailbreak" comment or your iPhone 6 "secure" comment.

Try English so we can better understand.

This stuff is really not that complicated…

Of course you can keep your old phone, although you can probably trade it in too.

I would trade it in for sure, you might get $150 for trade in! Otherwise sell it, don't just let it sit at home and depreciate in value over a few years.