[Verizon Motorola Droid Turbo Android Development] ChazzMatt:
OK, then what makes the XT1250 an "allowable" phone -- the FCC ID or is it on a Verizon server list somewhere? The XT1250 was sold by several CDMA/LTE regional carriers almost all of whom are Verizon roaming partners. Not MVNOs but actual carriers with their own towers and spectrum.

A lot of these regional carriers are in remote rural areas, and some are even co-ops with resident members. Verizon invests some money into these regional carriers so they can stay current with Verizon's LTE technology, and thus Verizon customers can roam on these towers with no problems when then accidentally venture into Appalachian towns with banjos playing. :p These carriers win because then their customers with the phones the carriers sold them (there's usually no BYOP with these carriers, they make money off hardware sales) can roam nationwide on Verizon when they go to the "big city" to buy "store bought" clothes. I'm joking somewhat, because I grew up in rural areas, and my parents got their landline service from a telephone co-op.

These carriers are NOT owned by Verizon, they are independent carriers, but they are by necessity subservient to Verizon. They get Verizon phones, but sometimes under a different model name so Verizon can falsely claim an "exclusive". (Sometimes the Verizon boot animation was still in the media folder!) Before being bought by T-mobile and AT&T, MetroPCS and Leap/Cricket was the two such largest regional carriers. They were the exception, they were also in larger cities and had a real network. What's left are now truly isolated rural carriers in various pockets of America. But I had MetroPCS back when they were just a regional carrier and I knew the "Verizon" phone model name change secret, which is why I went looking for the Droid Turbo under a different name!

The U.S. Moto Maxx XT1250 was the phone for these regional CMDA/LTE rural carriers. So, does Verizon and these regional carriers have some sort of VoLTE yes/no check off list?

http://www.rcrwireless.com/20161121/carriers/bluegrass-taps-verizon-lra-program-lte-deployment-tag2

https://www.verizonwireless.com/new...ced-wireless-services-to-rural-customers.html

https://www.reddit.com/r/verizon/co...status_of_volte_and_wifi_calling_rcs/ddppavk/

https://www.reddit.com/r/verizon/co...status_of_volte_and_wifi_calling_rcs/ddpotnr/

---------- Post added at 11:23 AM ---------- Previous post was at 11:14 AM ----------

What firmware are you running right now on the XT1250 to get Verizon VoLTE? CF ROM (based on XT1254 Verizon) , stock Verizon XT1254 or stock Motorola XT1250? I'm assuming one of the Verizon Marshmallow builds or CF ROM based on Verizon Marshmallow? Because the XT1250 Motorola firmware is still Lollipop 5.0.2.

XT1250_QUARK_LRA_5.0.2_LXG22.33-12.27_cid9_subsidy-DEFAULT_CFC.xml.zip

And if I remember correctly, Verizon introduced VoLTE with Lollipop 5.1, and the XT1250 never got that.

http://www.vcpost.com/articles/7237...rbo-on-june-10-skips-buggiest-android-5-0.htm

So, does the XT1250 NOT get VoLTE on stock Motorola 5.0.2? But does get it on stock Verizon 5.1 - 6.0.1?

I'm asking because I don't know, and this might help.