Here's some fantastic news for many users. Apparently, the HTC Droid DNA on Verizon has a completely unlocked GSM radio. All you have to do is just put in your SIM card and change your APN settings. After that it should work on any GSM network with 850/900/1900/2100 MHz freqs. One negative is that you won't be able to use 3G/4G on either of those networks because the phone won't work on 1700 MHz. This also means that it will work when roaming internationally as well. The kind folks at Android Central even included a video guide of how to do so. We included it above. Enjoy!

Source: AndroidCentral