[LG V30 Guides, News, & Discussion] ChazzMatt:
VoLTE. AOSP/Linage custom ROMs currently do not have VoLTE.

Read the

Root Sticky

. It discusses not only methods of root, but clarifies some misunderstanding like why the Lineage-based custom ROMs are called "H930" when in fact they are universal.

Hmmm... I'll answer your question best I can, but there's something you probably need to clarify better in another question. There's something confused here.

Tell me why do you want H930? Is there an LTE band you need or something? If so might be better to buy an H930 if you specifically need that variant. These are the bands of the US998 vs H930:

US998

CDMA: 800 MHz CDMA

2G GSM: 850/900/1800/1900 MHz

3G UMTS (HSPA):850/900/1900/2100 MHz

4G LTE Bands: 1/2/3/4/5/7/12(17)/13/20/25/66

H930

2G GSM: 900 / 1800 / 1900

3G (HSPA): 850 / 900 / 1900 / 2100

4G LTE: 1/2/3/4/5/8/12/17/20/28/38

Depends on what you mean by hardware difference... The V30+ is 128GB internal memory, the 2018 LG V30S is a V30+ with 6GB RAM, and the D/DS models have dual SIM trays. The V30 is technically 64GB, but we tend to call them all "V30" (code name JOAN) -- unless the discussion requires any distinction mentioned specifically. Having said that, the H930D (V30) and H930DS (V30+) has some different bands than the EU H930 (V30)/H930G (V30+), and there are different combination of bands on various North American variants, so there's possibly some antenna differences between regions. But nothing totally different like Snapdragon chipset vs Exynos chipset with Samsung. All Lineage-based custom ROMs run on all V30 variants, because they are all "JOAN" series. Thus, the underlying hardware on all the models is not "different" -- but there are different options for internal memory, RAM, sim card trays.

This is what I don't understand.

"WTF" INSTRUCTIONS

detail how to use the early Oreo exploit discovered by [MENTION=6158380]TxanMoe[/MENTION] for bootloader unlock, TWRP installation and root. It's not for converting any variant to another variant.

Whereas,

"Frankenstein"

(using Dev Patched LGUP) is for the North American variants, to completely convert one variant to another variant, including modems with all bands. Frankenstein is for North American variants only. It predates WTF bootloader unlock exploit and has its own uses -- mostly to carrier unlock V30 variants (like Sprint LS998 or AT&T H931), but also to convert a "cheaper" carrier variant to typically more expensive one (Sprint LS998 V30+ converted to Verizon VS996 for example, for people who use Verizon. Not only could Verizon users have a V30+ -- which Verizon didn't sell -- it was still much less money than VS996, at least back when both were new). However, once WTF was discovered, then Frankenstein was incorporated for the non-US998 North American variants (EXCEPT for the T-Mobile H932) to (temporarily) convert to US998 for the requisite WTF fastboot flash commands -- which only US998 has of all the North American variants. I keep having to say temporarily, because some people don't want to change their North American carrier model permanently, so they can keep carrier-specific features like VoLTE, Wi-Fi calling. After WTF, they can flash back to their original carrier variant firmware using TWRP-flashable zips (basically stock ROMs made from stock firmware).

Having said all that, Frankenstein does NOT work with non-North American variants. You can't completely convert one region V30 to another. Plus, all H930 variants have fastboot flash commands, so you don't need Frankenstein for them.

Someone did make a guide to partially convert a US998 to H930, because they were impatient for official Pie -- but you have to omit flashing the two modem files and another file. And every time you update that, you have to remember to always omit those files. You still have US998 bands. So you don't really have H930. I'm very wary of cross flashing different regions. Korean carrier variants have to do it temporarily to get fastboot flash commands for WTF, but they lose all modem/radio capabilities and then after TWRP installation have to flash back to another region via special TWRP-flashable zip to regain modem/radio capabilities.

So, feel free to ask a different question so I can figure out what you are really asking. :)