Same here. Of course the anonymity is less, as your phone is connected to gvoice instance.
But unless your going full dark,
- Turn off your primary phone, and put it on its own Faraday bag.
- Go to a high density location, lots of phones; with the burner phone powered off and in Faraday bag. This puts separation from your "known" phone from your "anonymous" burner phone.
- At the high denisty location take your burner phone out, try to avoid surveillance/security cameras and start it up
- Do what you need to do.
- When you leave the provider turn off and Faraday bag the burner.
- Drive back to your "primary" phone last known location, or an entirely new location as far away from the burner phone location. Retrieve from it's own Faraday bag and power up. Hope the wife wasn't trying to get in touch with you...
Your phones being on and near to each other and traveling together, pretty much tells the cops that your at least acquainted with each other, if not the same person if the body goes LISK missing. This is something the Google Voice also keeps you pinned together in cell/gps pinging