[LG V30 Questions & Answers] my.ads0:
Hey all. So I'm flummoxed.

I have an LS998 that I Frankenverted to US99820a and then flashed to VS996 20d. Everything had been great, as I've had this setup for probably a month or so without issues. Everything worked fine ... until a few days ago. Although I can't be positive, I know just about the time that I failed the magisk update, I lost the ability to send mms pictures.

I spent the next few days playing around with my settings. I tried Network Settings resets (didn't work), Restoring Default Settings to APNs (kind of worked until reboot) and all sorts of things to try to fix it.

Here's my work flow to give some idea of what I've done and learned.

1. Tried switching message applications. None worked except Verizon Messages while on WiFi, which makes sense since MMS then routes through the internet

2. Restoring Default to APN. This did work to restore my ability to send MMS, however:

a. Every time it rebooted, I lost the ability to send mms​

b. At least one time, I was no longer able to receive messages from my wife (fluke? Unsure)​

c. Regardless, Restoring Default APN after every reboot is not what I wanted to do.​

3. Reset Network Settings...nope.

4. I kdz'd in LGUp back to US998 20a. In US998, everything works perfectly! MMS comes and goes without any problem.

5. Great! KDZ'ing to 20a works, so let's flash VS996 20d, right? Right!

a. Except after flashing from the working US998 20a ROM (KDZ'd) to VS996 20d (TWRP Install), I lost the ability to send MMS again!​

b. Rinse and repeat of LGUP'ing KDZ'ing 20a and flashing 20d in various ways and the same game played out.​

6. Called Verizon and had them look at the account. The guy I was on chat with was amazingly helpful...I explained the entire situation to him in increments without throwing him for any loops and he tried his best on his end to see if there were any weird settings. He updated some things, tried other things, but of course, nothing worked. He's sending me a new SIM card just for the heck of it.

7. All along, I've figured it was APN issues, which I can't figure out where to find or set any default settings for this anywhere, so that's a block on that.

8. This brings us to 8. On a whim, I decided to try the Textra fix that worked for some folks on US998...change to legacy, set limit...but I also noticed an option to Manually Configure APN (for Textra). Ok, I figured, let's try this. So I tick it on and what do I see?

MMSC : https:/mms.sprintpcs.com :eek::confused:

Changing this to http://mms.vtext.com/servlets/mms gets Textra to work perfectly.

So now I KNOW it's an APN issue (of sorts) where the Verizon rom has default Sprint mms settings? WHAT?!?!

Recap ... this worked from early August until this weekend, just at or before the time that I updated to Magisk. conicidental? Possibly. Regardless, how can this happen? What am I missing? Shouldn't flashing the VS996_20b rom overwrite the modem? Or so I thought? If it did, then how did it revert?

Regardless, should I just try to update the modem on the V30 using the full Verizon 20b or d KDZ from here:

https://lg-firmwares.com/lg-vs996-firmwares/firmwares/

as others have done in this thread https://xdaforums.com/lg-v30/help/extract-modem-bin-file-vs998-t3802215

Any guidance and insight into what's going on would be greatly appreciated.