[Verizon Galaxy Note 4 Q&A, Help & Troubleshooting] br0adband:
The N910V covers the 900 and 1900 MHz bands natively so that's not the problem. In fact, to use the N910V - just to be clear, that is the Verizon model of the Galaxy Note 4 so make sure that's what you've got 100% - can use 2G/3G modes without rooting or any customization of any kind because it's factory unlocked so the only reason it wouldn't work would be either a) there's a defect in the phone itself (after it's been factory reset) or b) there's a defect with the SIM card reader, potentially a broken pin someplace in the slot and that's somewhat tough to troubleshoot or repair simply and would require replacing the entire reader or perhaps even c) you're missing the APN data that is absolutely necessary to ensure things are going to work properly. From a technical standpoint the APN data isn't necessary for basic network connectivity aka making actual phone calls or receiving/sending SMS messages but it is absolutely necessary to get the data connection working for Internet access.

I would suggest you do this:

- put your SIM card into the phone, whatever one you're hoping to use for cellular and data service, I'm hoping you understand that the SIM card has to have active service on it - and I'm not talking about the phone itself: if your intention is to use the N910V with a GSM carrier then it doesn't matter if it was ever activated or not with Verizon because it's a carrier unlocked device

- find the N910VVRU2BPA1_N910VVZW2BPA1_N910VVRU2BPA1_HOME.tar.md5 pure stock 5.1.1 firmware and flash it with Odin (phone in Download mode, of course)

- don't do anything else with the phone except flash that firmware and as soon as it's done flashing boot into the factory recovery do a wipe - the easiest way to do this after the Odin flash is watch for it to reboot the first time which will go right into the factory recovery, as soon as that ends hold Volume Up + Home and it'll reboot right back into the actual recovery then do the data/cache wipe and then wipe cache separately just in case

- let the phone boot up normally, leave it alone for 15 minutes and I'm totally serious here, 15 solid minutes, don't touch it, just leave it alone and let it boot and settle for 15 minutes

- after 15 full minutes have passed, go into Settings - More networks - Mobile networks - Network mode and set it for Global if it isn't already - DON'T DO ANYTHING ELSE, NOTHING, DON'T CHANGE ANYTHING ELSE AT ALL, then let the phone sit for 15 minutes once again

Yes I know you're impatient, we all are sometimes, but this not one of those times, you have to leave the phone alone and let it settle for 15 minutes in the step and if you're not willing to do that you may never get it working like you want

What I've learned over time is that being impatient sometimes works against you and that some smartphones - most notably Samsung models in my experience - take time to get their network connectivity on occasion so you have to be patient here and let the phone handle "business" as it needs to do. Some phones are nearly instant with a connection, others need time, so be patient, have a cup of coffee or soda or water, read a book, do something for 15 minutes and don't touch that phone.

After 15 minutes take a look at it and you should have some network connectivity, at the absolute bare minimum it should be connected to your carrier and you can make a phone call or send a text message or call customer service (usually 611). If you don't have any service whatsoever at this point then go back into the Settings for Mobile networks and set the Network mode to LTE/GSM/UTMS and - yes, I know you hate this but it's got to be done - leave the phone alone for another 15 minutes.

If after this second waiting period for the network connection to happen it still doesn't get a connection for basic cellular use - no data yet, that might not happen till you put in the APN info if that becomes necessary but that's the next step only if you get the basic connectivity working - then there's something broken on the phone. As stated above if the SIM card has service, there's no logical reason the N910V won't connect to the network for making a phone call unless there's a defect in the phone itself, something is broken or something got configured in some manner in your attempts to get it working and you're possibly looking at a phone you might not be able to get working with your carrier.

If you've got basic cellular service working but no 2G/3G/HSPA+/4G LTE service showing (that's the data connection and not the cellular which shows the signal bars meaning you are on the network) then you need to put that APN data in manually since the phone doesn't seem to pull it from the SIM card as expected. That's a step you'll have to take care of on your own as I don't know your carrier or the specifics of the APN configuration which I'm sure you can find at your carrier's support website.

Anyway, give that a shot. Best advice: stop mucking around with all the rooting/recovery/ROMs and get the phone working FIRST on the carrier's network using the pure stock ROM - once you can do that then you can worry about doing all the neat stuff and customizing things later on. If I had to guess you jumped the gun, missed something in all the experimentation you've done so far and just basically been too impatient in some situations and not let the phone settle long enough to get that connection. I've done that many times on some phones and got pissed about it only to discover that when I stopped messing with the device and just left it sitting all by itself that magically the network connection kicked in after a period of time, usually no more than 15 minutes.

You apparently have a lot of smartphone modification hardware and I'm betting if you messed with it you broke it, now it's up to you to fix it.

Hope this helps...