[Verizon LG G4] renoob:
Actually, it was @RedStripeE90 that updated the SlickDeals wiki, where I found the info and this xda forum, and I had tested our G4's right out of the box, and found the issues with data and calls.

The problem we need to focus on, IMO, is that while we are using TMo as an example, essentially, the "bug" (you know there will be some save face going on) renders ALL GSM usage crippled, unless there is something specific in the verizon.custom.verify.LTE service that acts like a hosts file or a QOS exclusion list to block domestic providers off VZW networks.

I noticed that there is a disclaimer on the LG Site stating "All listed frequency support is network/carrier specific. Roaming capability and network frequency support may not be available. Check with your network provider to see if and to what extent they offer support for this device.", and that the VZW Site has band 5 omitted.

GSM Arena lists the phone's full published hardware capabilities, which would imply that all the domestic carriers have this phone network locked, but only Verizon has to adhere to this specific issue regarding LTE related to the 700 mhz sale.

(b) Use of devices and applications. Licensees offering service on spectrum subject to this section shall not deny, limit, or restrict the ability of their customers to use the devices and applications of their choice on the licensee's C Block network, except:

(1) Insofar as such use would not be compliant with published technical standards reasonably necessary for the management or protection of the licensee's network, or

(2) As required to comply with statute or applicable government regulation.

-and-

(e) Handset locking prohibited. No licensee may disable features on handsets it provides to customers, to the extent such features are compliant with the licensee's standards pursuant to paragraph (b) of this section, nor configure handsets it provides to prohibit use of such handsets on other providers' networks.

This GSM issue is a problem in using the G4 internationally, because if it is crippled to the point of being non-functional with a non-VZW domestic provider's sim, how am I to expect it will work if I travel out of the US, and choose to use a GSM from another country?

And- per the 700mhz legalese- what would be the "reasonable person's" interpretation of "prohibit"?

Filing again.

Will post results.

Edit: FWIW, FCC complaint: https://consumercomplaints.fcc.gov/hc/en-us/requests/new?ticket_form_id=39744

Still at issue is Verizon Wireless' response to the issues involving the LTE bands and phone functionality of the Verizon LG G4 phone on competing carrier's networks, and ultimately International functionality.

Nothing specific was addressed with regard to section (e) of 47 CFR 27.16 - Network access requirements for Block C in the 746-757 and 776-787 MHz bands, which states: Handset locking prohibited. No licensee may disable features on handsets it provides to customers, to the extent such features are compliant with the licensee's standards pursuant to paragraph (b) of this section, nor configure handsets it provides to prohibit use of such handsets on other providers' networks.

https://www.law.cornell.edu/cfr/text/47/27.16

While degrading capabilities on other networks may not have been the intent of VZW, it certainly is the effect, to what a "reasonable person" would easily interpret as "prohibitive", and certainly questionable, at best, performance, as a "World Phone, Works in over 200 countries" as stated http://www.verizonwireless.com/smartphones/g4/#specificationBundle-wrapper

This phone is obviously hardware or software network locked, and has degraded performance outside of VZW networks to the point of rendering it unusable.