Lg f240l in boot loop - LG Optimus G Pro

Hi there,
I recently bought a used Lg f240l (so no warranty at all). Every thing was working fine and dandy but today when i restarted the phone it went into boot loop for like 15-20 minutes. I did a battery pull and rebooted but still it remained in boot loop. So i googled and found how to factory reset the phone , i reset the phone. It tool 15-20 minutes again to format but the mobile network signals were gone. I shutdown the phone to check the sim card . I restarted the phone but it went to bootloop again. Please help me out here.
I am aware of custom recoveries, root, etc but please dont hesitate to answer this question like I was a noob.
Also is there a possibility that the factory reset may cause a sim lock?
Thanks alot.
FIXED IT...
THE SOLUTION: In case any one googles ...
So i recently replaced the default fonts with htc m8 but fortunately i backed up the fonts folder.
I hard reset the phone by pressing and holding volume down+home button+power button
And when the phone booted i simply replaced the fonts folder.
I dont know why this happened but this solved my problem.

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Hello, I have the LG G7 thinq. The Device is on Bootloop but I don’t know why!! It starts again and again. It comes to the Red LG Logo and than It boots again. Please Help
zzman31 said:
Hello, I have the LG G7 thinq. The Device is on Bootloop but I don’t know why!! It starts again and again. It comes to the Red LG Logo and than It boots again. Please Help
Click to expand...
Click to collapse
Please describe what happened prior to this before you start a whole big riot again.
Hello, I have this problem well. It started 8 hours ago. I was using it normally, no root or anything. And suddenly when I take it out of the pocket, it just keeps restarting.
I'd like to recover all my data before hard reset. Any help please?
Couldn't even turn it off, I had to wait until battery died.
Hello, same problem here. 2 hours ago I received a WhatsApp message and suddenly it restarts again and again.
Me too! But after two factory restarts I found the problem I guess.
For me, it occured twice when I started Airplane mode and after that everything went to...
Now I am affraid to start airplane mode again
What ROM and version are you guys??
V10f-EUR-XX
My version is V10k-EUR-XX.
After 2 factory resets it looks like my SIM card is the problem.
Without card the phone starts... But in my old LG G6 the SIM card works well.
I tried it with and without SIM as well, but it behaved the same. Sometimes I got into the system, but it just got stuck right away and bootlooped again.
But weird, because for me its airplane mode, which disables/enables celular, so SIM again.
I got T-Mobile, you?
I got t-mobile, too.
So lets wait for stormeye25, I wonder if he also has t-mob
Airplane mode is working well. Without a SIM ...
I am working with SIM. Only when I switch airplane on it stucks again. First time it was me turning airplane off, second time turning it on. Always with SIM and working celular
I tried without sim. Same problem. Also sometimes it boots up, but freezes after 2 seconds. I have the Europe version
I have same problem and i dont know what to do. Problem start about 5 hours ago (what i know last working time was 2:00AM CET). Itself reboot in boot screen or immediately on screen lock after start. I did factory reset, it work for few minutes and again. Version G710EM DEC (germany open market) last FW
It's something from lg ?
Update gone wrong maybe
Exact same problem on my G7 Thinq. Started about 8 hours ago. Boot loop, managed to get it in factory reset mode. Did nothing. Managed to reset it again (without the SIM in) then it booted. After reset it does not recognize (any) SIM. Called Tmobile to ask some questions about repair-process, they told me I was the 3th today with this problem. At this point I wish I wrote down my Google's 2FA recover keys :'). Can't access anything at the moment.
Same bootloop here, g7 thinq bought in Hungary Unlocked, but it downloaded the local t-mobile branding.
It was untouched on charger. When I wanted to pick it up it was already bootlooping and hot.
Put it into freezer, it booted, wallpaper lockscreen arrived, but nothing more.. it was stuck and started bootlooping again after like 30 secs.
Any info / resolution you have?
Okay so it happened again for me with not changing airplane mode or anything. Now I will try without SIM card. I will try to get into touch with our corporate t-mobile associate... Can we pinpoint if its t-mob (SIM) or something to do with LG?
Same here, G7 bought through TMobile Netherlands. I had turned it on airplane mode before going to bed, and when I tried to put airplane mode off it got stuck.
I'm waiting for the battery to die so I can try to wipe the cache...
Flash back to V10F did not help. More accurately until I insert sim (T-mobile) it looks like it works, after inserting sim freezes and resumes bootloop
Okay, out of the blue when in my pocket I noticed my phone was very hot and appeared, also without warning, stuck in a boot loop. Also on T-mobile...I had no problems before.
***Edit*** For the record I run a stock phone/firmware that I have never tempered with...

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