I HAVE LGL41C  ULTIMATE 2  I WAKE UP MORNING TO FIND IT HAVE NO SERVICE THEN I RESET IT SOFT THEN HARD END WITH BOOTLOOP ON TRACFONE LOGO AND NOW NOTHING ACCESSIBLE ACCEPT RECOVERY MODE WHICH TAKE ME TO BOOTLOOP AGAIN ,I NEED HELP ,BOTH LG AND TRACFONE DIDN'T HELP ME ....I TRY REMOVE THE BATTERY AND RE PLEASE IT , I TRY LGMOBILE TOOL IT STUCK ON DOWNLOADING  SOFWARE   ..HELP

I DO NOTHING AM NOT A DEVELOPER I USED THIS PHONE EVERY DAY ...BUT I DID SOMETHING WHEN IT SHOW NO SERVICE ONLY 911 AND IT THE PHONE INFO GONE   ...I TRIED TO USE TESTING MODE AND PUT 000000 LIKE SERVICE NUMBER AND I FAILED TO ENTER PHONE TESTING MODE THEN I USED APPS WHICH IT DID THAT FOR ME I TURN RADIO OFF AND THEN ON RUN TEST AND NOTHING CHANGE SO I REMOVE THE APP AND RESET THE PHONE AND THIS TIME IT STUCK IN BOOTLOOP FOR EVER

My dad had the same phone, and it bricked itself with no_user_input. It could very well be a hardware thing that makes these phones do it, since after all, hardware problems are pretty common with lg products (g3 screen fade, g4 bootloops). The ironic part about his phone bricking is that I have the same phone, and I've done all sorts of low level tweaking, and haven't had a problem  .