Has any Verizon user tried placing AT&T sim card into the phone, while the phone is already on Verizon service? What will happen? Can the phone receive SMS and calls from both services?
I've heard of some people using the gsm slot for att, but i believe you're thinking that since verizon doesnt need a sim and att can use it you can use both carriers on one phone. THIS IS NOT POSSIBLE. lol.
The DNA is a worldwide phone though and some people have had it working on att. But only one service at a time