Can metro pcs transfer all my apps messages contacts etc to a new phone when my other phone won't turn on both iphones btw?

Can metro pcs transfer all my apps messages contacts etc to a new phone when my other phone won't turn on both iphones btw?

No.

The old one HAS to be on.

You could do that on your own though, but in either case the older phone would need to be able to power on to do so, unless you have a recent enough backup that you could use.