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unit wont boot up at all... nothing.. ive tried multiple batteries, the only indications of anything with the phone is the red led when a charger is plugged into it..
any thoughts? please help
thanks!!
Mine had to take juice for about 15 minutes before it would turn on.. With you trying other batteries, I'd assume at least 1 of them already had a charge, but you may try letting it sit on charge for a while.
I had the same problem with mine when I got it in the store, the red light comes on when you plug it in, after telling the nice Telus lady many times, I think you should try a different battery she did and it worked. We did try charging the other battery for more than a half hour or so, so I am thinking it was a deffective battery. If letting it charge for sometime and if multiple batteries doesn't fix it I would say it is most likely a paper weight but I am by no means an expert.
My p4000 turned on right away and was working instantly.
I would think that with the unit plugged into a working USB/car/wall charger it should work regardless of the battery state.
However - if the battery is actually B-A-D and acts like it is not there - or the contacts are dirty or a bit of debris or plastic is covering the contacts, then the unit will act like there is no battery in it and wont turn on.
So yesterday my phone started freaking out. It started flashing the usb notification and sound as if I was plugging in the phone and unplugging it rapidly, even thought I was plugging nothing in. To see what happen if I actually did plug something in I tied pluggin in the power adaptor and I got the "Moisture In USB Port" warning. My phone has not come into contact with any moisture, and even it somehow had it has been nearly 24 hours and I still get the warning when I try to plug it in. The rapid usb notification happened once again this morning but hasn't happened again since. What is going on? I can't charge my phone unless I turn it off.
I just started getting the same message. No moisture at all.
Sent from my LG-H872 using Tapatalk
Same situation here. I tried to put G6 in a rice over night, without help.
Also I put my device on a coffee machine several hours to get rid of "phantom moisture", without any results at all. I think it's now software related problem.
By the way i can't charge my battery over 50%, to charge it until 50% I need to restart device with attached USB. By the way notification with vibration effect every second is freaking me out.
If someone find any solution please share...
L
Sent from my Pixel XL using Tapatalk
I tried a different charging cable and it was fine.
Sent from my LG-H872 using Tapatalk
Problem solved for me
vintagerock said:
So yesterday my phone started freaking out. It started flashing the usb notification and sound as if I was plugging in the phone and unplugging it rapidly, even thought I was plugging nothing in. To see what happen if I actually did plug something in I tied pluggin in the power adaptor and I got the "Moisture In USB Port" warning. My phone has not come into contact with any moisture, and even it somehow had it has been nearly 24 hours and I still get the warning when I try to plug it in. The rapid usb notification happened once again this morning but hasn't happened again since. What is going on? I can't charge my phone unless I turn it off.
Click to expand...
Click to collapse
I took my phone to spain and it had loads of sand on it by the beach. I couldn't charge due to the moisture warning for 3 days. Eventually i found a solution. I loaded that sink with about 2/3rds water. I swilled only the port area in the sink. I then dried the phone as well as possible. I screwed a thin tissue paper up and dabbed round the port. I then found a rectangle piece of card (it was a clothes price tag) it was probably 1 millimetre thick and i pushed it in deep into the usb port to aid cleaning using the corners of the tag. It solved the issue and didnt break anything and cleaned out some of the deep sand and cotton that wasnt drying at 30 celicus heat this week. Saved me claiming on my insurance and the headache of installing all my apps etc. Try it, but be very careful with the card tag as you dont want to break any terminals in the usb slot.
I had the same issue as the original poster about a month ago. I have spent the last few weeks testing and found that for me changing developer settings back to "charging" from "file transfer" has worked. Not saying it will work for you but give it a try!
Having the same issue now. No reason to think much moisture got in. Sat it in rice, etc. Haven't tried washing the port. Anyway, I can charge if I turn on airplane mode then boot into safe mode holding volume down plus power. The moment I plug in, it powers on unless the battery is totally dead. And it never charges close to full even then without the above workaround. Planning on taking the phone in. It's annoying, and my battery life seems shorter with the constant almost-notifications (which started out looking like they came from a variety of apps). Hopefully there's an official solution.
i restarted the phone and it worked
I posted about this a while back and couldnt figure it out so i exchanged for a new one
I would say various kinds of debris could get in the charging port and have enough conductivity to be detected as water. I always hated USB port covers, but at least they prevent this problem.
Fix for moisture detected
The contacts in the usb c are loose and may be cross connecting. I fixed mine by taking the charge cable type c end and squeezing them lightly with needle nosed pliers so the flat sides were BARELY concave. This fixed the problem and I am able to use the original cable to fast charge again.
Hollowtech2 said:
The contacts in the usb c are loose and may be cross connecting. I fixed mine by taking the charge cable type c end and squeezing them lightly with needle nosed pliers so the flat sides were BARELY concave. This fixed the problem and I am able to use the original cable to fast charge again.
Click to expand...
Click to collapse
This kinda sorta is working for me. I can slowly move an unplugged USB cable in the port and trigger the notification pop up. As opposed to constantly this now happens intermittently. It started after getting my phone wet. 1 bowl of rice later and the moisture error is gone, but the USB debugging notification appears and disappears rapidly every so often.
Moisture issue, nothing is working?
Reboot with it already plugged in does not help. My phone will NOT stay off now? Every time I select "power off" it restarts as soon as I plug it in. I have no clue what to try now. Seeing if draining my battery will help. Light moisture contact days ago but nothing more than droplets.
For those who're still having issues, the following worked for me:
1. Power off the phone and then power it back on. (This alone should help but if you have power savings mode enabled, carry out step #2)
2. If you have power savings enabled, turn it off and then power the phone off and back on.
I've got the same message after swimming with G6, I've tried to toggle the usb connection port and try to charge it while off / shutdown.. And it works
I've had the same problem. Moisture warning while it's not the case. Lated 3 days and suddenly it was gone. Phone restarted also when trying to charge with power off. Sometimes after couple of restarts it would load. And connecting the cable very shortly helped also someone. It seems to me that it is a bug in the devices because we are not alone with this problem
At least you aren't alone
Same problem happened to me. It was a slow over a week process. First a flashing usb icon I had never seen before then every one in awhile the usb moisture warning started popping up here and there. Still I'm not alarmed. Flash forward to a week later (today) and not only can't I charge my phone passed 4% (after the airplane mode trick seemed to have worked but only briefly) I brought it to Verizon I tried wirelessly charging and using two other corded charges and nothing would make it less than 2 hrs and 30 mins charge time then it's turn on and just die again. Employee was familiar with the prob gave me the warranty # and ill have my new phone tomorrow. In the mean time I've discovered of the 5 places i tried to charge my phone including the Verizon store all power sources were ports or extension cords etc . I found that plugging it into the wall outlet works. Shocker right? Well I hope that the make sure its charger to outlet revelation for myself helps others as they wait for the new phones...:laugh:
I plugged my phone into a computer USB port and switched the USB options to Charge Only and Always and the moisture warning went away.
Had this problem for more then month, and this is how I managed to get rid off that moisture message.
1: Go to Apps>Configure Apps (3 dots menu in upper right corner)>Special access>Modify system settings>Show system (3 dots menu in upper right corner)>LG System server - turn off "Allow write system settings"
2: Apps>Show system (3 dots menu in upper right corner)>LG System server - Turn on "Silent"
Of course, you must be 100% sure that is false message about moisture in USB port
As in the title. Right now I'm experiencing an issue with the 'moisture detected' notification. So long story short I'm on vacation right now in Vietnam (very humid) and yesterday I took my phone to the swimming pool in order to take a few pictures since it is IP68 waterproof. So all was good, wiped the phone clean and it was working perfectly (camera, fingerprint, screen etc.) until I've tried plugging it in. Then it showed the moisture detected notification so I've cleaned the port using cotton wipes, soft toilet paper and tried blowing into the port. It worked and phone did manage to charge to 100% overnight. But today the issue came once again. Tried using small toothpick wrapped in toilet paper in order to properly clean the area around charging port but it didn't manage to fix the problem. I'm honestly out of ideas and best thing for me would be to fix it without having to claim warranty since as I said I'm outside of my country right now. Do any of you guys have any idea how to fix it or encountered the same issue before?
EDIT: Right now my phone is sitting at 9% and I'm running out of ideas on what to do. I've also tried putting it vertically in rice in order to get rid of any moisture from the usb port but it didn't do ****.
Make sure you don't get other debris in the port (rice). If you have a small brush use that. Rubbing alcohol and a pressed qtip can also work. Good luck
bdithug said:
Make sure you don't get other debris in the port (rice). If you have a small brush use that. Rubbing alcohol and a pressed qtip can also work. Good luck
Click to expand...
Click to collapse
I don't have access to a rubbing alcohol and I've tried using qtip as well as small brush to clean the port. The port itself looks clean and I can't observe any signs of moisture.
"I took my phone to the swimming pool in order to take a few pictures since it is IP68 waterproof."
No phone is waterproof BUT water resistant.
Its meant for accidental drops into water, splashes, rain etc. Not for a day of underwater filming and pictures.
Big lesson learnt here.
Try doing a factory reset, however, with 9% battery, this is a dangerous game.
Did you actually immerse your phone in the swimming pool?
Depending on which model you have, you could also try wireless charging
I think the port is perfectly dry, it must be the software that triggers a time counter with this message, to prevent the user from creating a short circuit.
Wait a few more hours / days and the message should disappear.
As said above, it is not Waterproof but water resistant, it implies such disturbances after a stay in the water
Sent from my LG G6 using XDA Labs
This is a somewhat common problem with the G6. Mine shows this error about once a month and I've never had water near my phone. It is some sort of hardware problem that has nothing to do with water. Try powering down and back up with it plugged into the charger, it may take a few times but that clears it on my unit. You can also try going into developer options and changing the usb port settings to charge only.
Try this
I may have found a temp solution to bypass the LG G6 moisture charge block.
1.Power the phone off completely.
2.Start in Recovery Mode ( Power on by holding Volume Down and Power buttons)
3.Clear Cache.
4.Before the phone reboots hold the buttons to return to Recovery Mode.
5.Select Power Off
6.Have the usb cord connected to a running computer.
7. Plug the cord into the phone while holding Volume Up and Power Buttons to go to Download Mode.
8. Reboot the phone by holding the Recovery Mode Buttons.
9. The phone should boot being nice to the usb cord and should be charging.
10. you may have to repeat these steps to charge the phone in the future, Im able to unhook it from the computer and connect it to a wall charger and it still work fine for at least one charge.
I also got this problem. But until now i think it solve. What i did is, first i use earbuds to clean the inner but it still show the warning.. Then i put vertically in rice for 30 minutes.. And it still show the warning. Lastly i used isopropyl alcohol pad to clean the insert of usb using toothpick. And the warning not showing off until now and i can charge the phone regularly...
I had this problem too. I resolved it by running tap water into the port for 2s and drying it off immediately using a toothpick and dry paper towel
My G6 started doing this a few days ago, now the notification pops up and closes every now and then (between every 10 seconds and 10 minutes, totally random) but the notifications go away when I plug my phone in? Which would be fine, but the notification wakes the screen up so I'm losing battery throughout the day like crazy...
I solve the problem with this: go to settings-general-apps-right upper corner dots-show system-app lg system server- storage- clear cache and confirm. Thats are all.
Happens to me a lot when I'm working outside in the rain and the phone is in my pocket. What I do and it works everytime for me, I use a hair dryer on high aimed into the port holding the phone port side down so any water will drip out. Do it for about 30 secs and plug your phone it, it should work.
willit101 said:
My G6 started doing this a few days ago, now the notification pops up and closes every now and then (between every 10 seconds and 10 minutes, totally random) but the notifications go away when I plug my phone in? Which would be fine, but the notification wakes the screen up so I'm losing battery throughout the day like crazy...
Click to expand...
Click to collapse
I got the same exact problem, first the humidity sensor error, and then the battery icon the continuously changes to charging and not.
I've solved the first with alcohol and toothtpic, but not the second one.
When I restart it, it doesn't do it for a while, and then it comes back.
I already did:
- night in rice
- toothpick and Water with alcohol
- poured alcohol in the port and then cleaned it
- WD40
Any further solutions from the Pro member?
It does charge when off, but the the battery icon starts changing back and forward....
Thank you in advance!!!!!
ubinpwnt said:
I had this problem too. I resolved it by running tap water into the port for 2s and drying it off immediately using a toothpick and dry paper towel
Click to expand...
Click to collapse
I agree with what they say. The water residues that can not come out due to the pressure difference will come out with new water. Put pure (bottled) water in a bowl and let it stand for 5-10 minutes, quickly remove it from the water (vertical) and dry it. Tap water can cause scale formation. If the first attempt fails, try again and try to shake the phone in the towel.
Try to put your phone without sim card slot for a night in rice or moisture balls and try the haïr dryer
Had the same problem for few weeks, finally it disappeared, i guess dried off. in a mean time, try to shut down the phone unplugged, start again and plug the power in when LG logo appears on the screen. worked for me, try different timing until it works. Needs to be plugged in before phone finished boot
Best and easy way to resolve Moisture detected check USB port
I just had this issue about 15 mins back. Was worried on how to resolve it and hence searched for solution on XDA.
I also tried to take a towel with threads tied open on the ends rolled the treads end and pushed into the charging port and cleaned it for few seconds and it worked. I now dont see that error anymore.
ubinpwnt said:
I had this problem too. I resolved it by running tap water into the port for 2s and drying it off immediately using a toothpick and dry paper towel
Click to expand...
Click to collapse
Are you for real? asshole
---------- Post added at 04:34 PM ---------- Previous post was at 04:30 PM ----------
wojwem19 said:
As in the title. Right now I'm experiencing an issue with the 'moisture detected' notification. So long story short I'm on vacation right now in Vietnam (very humid) and yesterday I took my phone to the swimming pool in order to take a few pictures since it is IP68 waterproof. So all was good, wiped the phone clean and it was working perfectly (camera, fingerprint, screen etc.) until I've tried plugging it in. Then it showed the moisture detected notification so I've cleaned the port using cotton wipes, soft toilet paper and tried blowing into the port. It worked and phone did manage to charge to 100% overnight. But today the issue came once again. Tried using small toothpick wrapped in toilet paper in order to properly clean the area around charging port but it didn't manage to fix the problem. I'm honestly out of ideas and best thing for me would be to fix it without having to claim warranty since as I said I'm outside of my country right now. Do any of you guys have any idea how to fix it or encountered the same issue before?
EDIT: Right now my phone is sitting at 9% and I'm running out of ideas on what to do. I've also tried putting it vertically in rice in order to get rid of any moisture from the usb port but it didn't do ****.
Click to expand...
Click to collapse
I have it too. why the **** does LG have the right to do this , basiclly killing the phone for moisture , it's not that high a volatage. mine is from wearing in my coat and sweating . this will be my last LG ever , anyone know other phones that refuse to charge so i can avoid buying that brand there goes 700.00 dollars down the drain . first cell phone to do this in 30 years since the first brick fucing pissed as this phone is new . any way to r00t it and disable this ?
So I am at the beach for the week and started getting the moisture detected nag at night. I cant find any way so far to over ride this. Yesterday I was able to charge the phone by plugging the charger in and turning the phone off. I wake up this morning and have gotten the error again. Now I am down to 10% and the phone keeps turning itself back on everytime I turn it off while charging. I have tried leaving it plugged in and plugging it in while off. I have turned dev options on and off along with changing it to MTP mode and using the PC. I have tried a normal charger and a dumb charger.
So someone at LG seems to think they know better than I do. How do I turn this feature off? I know there has got to be a way to make your phone stay off? What if the thing dies now, the hotel catches on fire, and we all burn alive because my phone is dead and cant cant call for help? (actually I dont know that the phone would help to much then kind of like the kids that tried to text 911 during the Va Tech school shooting instead of fighting back or running away) There should be an extremely high liability in not allowing someone to charge their phone.
No I have not taken the phone in the water. Besides it is supposed to be ip68. I was going to try and pick up the buy one get one V30 deal. At this point after the gps fiasco with my old G5 and now this I want no parts of another LG. I dont even want a smart phone but a dumb phone. In fact I want a retarded phone that all you have to do is hit 10 numbers to make a simple phone call.
Kogashuko said:
So I am at the beach for the week and started getting the moisture detected nag at night. I cant find any way so far to over ride this. Yesterday I was able to charge the phone by plugging the charger in and turning the phone off. I wake up this morning and have gotten the error again. Now I am down to 10% and the phone keeps turning itself back on everytime I turn it off while charging. I have tried leaving it plugged in and plugging it in while off. I have turned dev options on and off along with changing it to MTP mode and using the PC. I have tried a normal charger and a dumb charger.
So someone at LG seems to think they know better than I do. How do I turn this feature off? I know there has got to be a way to make your phone stay off? What if the thing dies now, the hotel catches on fire, and we all burn alive because my phone is dead and cant cant call for help? (actually I dont know that the phone would help to much then kind of like the kids that tried to text 911 during the Va Tech school shooting instead of fighting back or running away) There should be an extremely high liability in not allowing someone to charge their phone.
No I have not taken the phone in the water. Besides it is supposed to be ip68. I was going to try and pick up the buy one get one V30 deal. At this point after the gps fiasco with my old G5 and now this I want no parts of another LG. I dont even want a smart phone but a dumb phone. In fact I want a retarded phone that all you have to do is hit 10 numbers to make a simple phone call.
Click to expand...
Click to collapse
Hello , yesterday i had my first "fake positive" moisture detection. In my case i used pendrive made of metal which was cold to touch. When i warmed it to room temperature it worked just fine. Maybe your cable connector is too cold?
adamsek said:
Hello , yesterday i had my first "fake positive" moisture detection. In my case i used pendrive made of metal which was cold to touch. When i warmed it to room temperature it worked just fine. Maybe your cable connector is too cold?
Click to expand...
Click to collapse
Thanks. I have tried multiples. Yes it is probably a little more humid here but it shouldnt be enough to trigger the sensor. Afterall last summer I rolled with the thing in my pocket and was sweating all over it. Also, the night I got it I spent one of the nights in one of the courts in richmond looking for someone at a running pace and in ripstop 50/50 nylon without throwing the error. I am thinking my phone might be not quite right. I wish there was an override.
So I found out what it does when it dies finally. It charges to 5% then cuts back on and dies again. I am all about technology but only when it works.
-update.
Went out to swim and before I left I took the rubber case off and jammed the whole phone into one of the vents on the PTAC and cranked it up to 11. I got back and now at least it is showing it is charging and not cutting back on while doing so. Once I get it to 100% we will repeat the process. It is very moist here but I dont see having everyone with a LG or Samsung phone not being able to use them. Yes I am staying in a resort in a first world country not in a shack in off the coast of Lebanon or something.
Try this. exact same thing happened to me.
My LG G6 all of a sudden stopped charging, it said moisture detected and USB port, charging blocked. And then my phone died. I asked my phone provider what to do, they said to call LG. LG said it's because I haven't updated the phone, but my phone was dead. So if your phone has enough battery power to do an update, do it right away. What I did was took it to the store where I bought my phone, charged it wirelessly enough so I can do an update. And that's it , my phone worked fine after. Hope this works for you
You can try this
*#546368#*930# ----> SVC Menu ---> Moisture Detect Setting ---> Disable
Replace 930 with your G6 model number. Mine was 873 and I turned it off. I'll have to test it later to see if I still get the message. Alternatively, what other thing worked for me was switching around the usb type c end that goes in the phone to the smooth side facing up. The connected side always sets off the message
There appears to be a continuity sensor at the rear of the port. If you look to the left and right of the wafer connector in the back of the jack, you'll see two little contacts. My guess is that these create a circuit when damp or covered with any type of slightly conductive dust to trigger a cutoff on the charge port. I had this issue starting at 2am last night (hadn't been outside since 7pm that evening, phone in pocket) throughout today. I tried just cleaning out the port with a microfiber cloth, that didn't seem to do it. So ultimately I ended up shutting the phone off, getting a cotton swab damp with 90% isopropyl alcohol, swabbing the connector until the entire thing was damp, and blowing it out with air duster. Then I used a flat toothpick to clean off any remaining debris and dust inside the ports. No error since, been about 30 minutes. May not solve for you, but this isn't necessarily just water related, definitely seems to be triggered by dust and debris covering the contacts at the rear of the jack.
Edit at 2230 EST: Going on 6 hours now with no further issues.
nmyron said:
There appears to be a continuity sensor at the rear of the port. If you look to the left and right of the wafer connector in the back of the jack, you'll see two little contacts. My guess is that these create a circuit when damp or covered with any type of slightly conductive dust to trigger a cutoff on the charge port. I had this issue starting at 2am last night (hadn't been outside since 7pm that evening, phone in pocket) throughout today. I tried just cleaning out the port with a microfiber cloth, that didn't seem to do it. So ultimately I ended up shutting the phone off, getting a cotton swab damp with 90% isopropyl alcohol, swabbing the connector until the entire thing was damp, and blowing it out with air duster. Then I used a flat toothpick to clean off any remaining debris and dust inside the ports. No error since, been about 30 minutes. May not solve for you, but this isn't necessarily just water related, definitely seems to be triggered by dust and debris covering the contacts at the rear of the jack.
Edit at 2230 EST: Going on 6 hours now with no further issues.
Click to expand...
Click to collapse
How did you get it inside, I'm thinking I did a poor job cleaning the port but a needle barely fits.
Here's my post:
"The message appeared randomly while charging one night. It was nowhere near water for several months and I work in an office.
What I've tried:
- Drying with a hairdryer (not even a temporary fix)
- Force stopping LG system and LG server processes. I even disabled them with package disabler!
- Disabled the moisture sensor in secret menu. Warning still shows up! Even if I try to turn of the phone and charge it.
- Cleaned the USB C socket with a hairpin and cloth
- Cleaned under running water, swapped with alcohol and dried again (getting desperate)
It does however charge if I plug unplug it in like 5 times. Really annoying!
It does this regardless of charging cable, I tried with 5 cables at home and work.
I read somewhere that the pins were causing a short, but the pins are inside the cable right?
What else can I try?"
povertyd said:
You can try this
*#546368#*930# ----> SVC Menu ---> Moisture Detect Setting ---> Disable
Replace 930 with your G6 model number. Mine was 873 and I turned it off. I'll have to test it later to see if I still get the message. Alternatively, what other thing worked for me was switching around the usb type c end that goes in the phone to the smooth side facing up. The connected side always sets off the message
Click to expand...
Click to collapse
Funny, I just tried this and still get the error. You'd think disabling it would remove the damn notification/it from working....
After all the **** I did, I found my problem and solution.
It was because of my charging cable that had bent pins, yet oddly enough the moisture detected error persisted with other cables.
Thru away that cable, then reset the phone cache and soft reboot (volume down + power)
Hope this helps.
Used trimmed down tooth pick and nail vanish remover - gently cleaned and my wife hair dryer on low ...and Voila" back in business ! Thanks for basic idea !
povertyd said:
You can try this
*#546368#*930# ----> SVC Menu ---> Moisture Detect Setting ---> Disable
Replace 930 with your G6 model number. Mine was 873 and I turned it off. I'll have to test it later to see if I still get the message. Alternatively, what other thing worked for me was switching around the usb type c end that goes in the phone to the smooth side facing up. The connected side always sets off the message
Click to expand...
Click to collapse
This Doesn't work on Sprint/Boost Phones. I have tried all the 'hidden menu' codes I can find but none lead to the SVC menu..
- LG ls-993 ZVF
Ok so i bought a second nexus 6p from ebay , it was advertised as a new sealed in box device
when i got it it was immediately obvious something was wrong ,the packaging was hard plastic not the embossed cardboard packaging with the "P" stamped in it.
There was some glue on the battery cover and when i weighed the phone it weighed less than my original 6p.
I immediately proceeded to start a return with ebay
but i used the phone for a bit and it seemed to be working ok so i was thinking of just keeping it and asking for a discount but then a few weeks later i was driving and the phone slipped out of my coat pocket and slid in between the drivers seat and the center console.
The phone only fell like all of 6 inches had a TPU case on it ,i was listening to music and it was connected to the radio via bluetooth at the time.
As soon as the phone fell the music stopped ,i picked it up from between the seat and saw that it was off , i tried several times to power it on but it was completely unresponsive no matter how long i held down the power button for , the phone was just charged to 75% before i got in the car and this happened bout 5 minutes into my drive.
When i got home i plugged the phone into the charger and i noticed that upon connecting it to power it immediately showed the google logo and started to boot , but then it goes into bootloop.
If i leave it plugged in it just keeps on looping , as soon as i unplug it it goes off, black screen and i can not get it to do anything.
I never press the power button when i plug it in to the charger and it starts to boot automatically.
I never see the battery charging icon screen at all when i plug it in.
I got refunded for the phone and didn't have to send the device back.
So i am wondering if i should take it to ifixit and have them replace the battery but i am not sure what is causing this issue.
Could it be that the internal battery cable came disconnected when the phone fell(all of 6 inches)
would an internally disconnected battery cable cause this behavior ,( that is my theory anyways since the phone does not loop or do anything at all when not plugged in and when it is plugged in i see no battery charging screen) .
I am guessing that they did a ****ty job refurbishing this phone and cheaped out and used a smaller battery(hence the lighter weight discrepancy) , not only in capacity but also in dimensions and that they did not glue it in good so that when the phone fell the battery slid and shifted inside the phone and came disconnected from the cable internally.
This is only my guess and i do not want to spend $100 to find out if it is correct or not and pay ifixit to change the battery only to find out the phone is bootlooped.
So i am hoping someone here has some insight and can confirm what is going on .
Maybe someone who has changed these batteries before and who has tried connecting the phone to USB while the battery was removed?