Hi. After a crash from 50 cm, my redmi 5 plus reboot in loop. So I removed the back cover to remove the battery, but immediately the phone restarts correctly and works perfectly. When I put the cover back, the phone immediately reboot in loop.
So the problem is the back cover, like a sort of short circuit. But what is exactly the problem? And what about the solution?
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I have a T-mobile vibrant running bionix which has worked without any major issues up until a few minutes ago.
The phone shut itself off (while tethering). When I try to turn the phone on it will not boot.
I get the Vibrant splash screen, then the Team Whiskey animation and then the phone turns itself off.
I tried a different battery, and I also tried with and without the USB power plugged in. Removing/replacing the SIM and MicroSD card do not make a difference.
I got it to boot once with the battery cover removed, but putting the battery cover on made the phone shut off immediately. I have not been able to get it to boot up except for that one time.
The phone can boot to recovery properly, but then it just shuts itself off again.
Does anyone have any idea what is going on?
Sounds like you may have a case of bent contacts. Especially if it boots on when the cover is off but then you put it on and it shuts off. I would look at that first. Doing any hari-cari type battery pulls lately?
I have a little more information to add.
1. It isn't bent contacts. (Or if it is, I can't tell) The battery contacts are all in good shape.
2. It is definitely a physical contact or trace inside the phone. I can get the phone to boot up sometimes if I don't move it around very much. Simply tapping my finger on the back of the phone makes it shut itself off again.
What does that sound like? A power trace? Any help is appreciated.
I took the phone apart again and then reassembled it. Nothing seems to be broken that I can see with my naked eye.
More information:
Applying pressure to the battery (or middle of the phone) doesn't make it turn off.
Applying pressure to the back surface close to the top of the phone where the logic board sits makes it turn itself off instantly. Specifically, where the speaker/ringer is.
I wonder if a new logic board would fix my problem. I have already ordered a new phone (Galaxy Nexus), but I would love to get this one in working order again so that I could sell it or use it as an mp3 player
I was asked to by my cousin to see if I could help him as he was having a problem with his S3 today, by coincidence a friend also rang me about his S3 giving him problem. When I got hold of both phones I found that they have identical issues. Both phones are not rooted and more than a year old so out of warranty.Here are their problems.
1. Turn on - it just loops at the splash screen.
2. Enter recovery - It just flashes the android figure and goes back to the loop.
3. Enter download mode - only as far as vol up and it goes back to loop.
4. Plug into wall charger - It shows the gray battery icon with static circle, at times it just flashes the charging icon.
5. Remove battery and insert the phone boots into the loop.
So there is no way to wipe or flash with Odin, I remember I had fixed my Note 1 with the charging issue which is the charging port. So i guess it could be the same problem,
THE FIX - There is a flat horizontal plate at the charging port which after repeated pluging in and pulling out usb it somehow touches the bottom. couple with dirt and grime and sweat it causes some sort of shorting.
I disassemble the phone, gently with a small flat screw driver i lifted the plate up, careful not to insert too deep and applying very light force in lifting it a bit.
With a small soft tooth brush using alcohol, clean out the port at the same time I also clean the the whole mobo, at the power on point as well..
Finally using a hair dryer at lowest, to dry it up. Reassemble and manage to go to recovery do a wipe and restore, both working well.
You could just try without disassembling too, by just lifting the plate and cleaning with alcohol, but remember to be very careful otherwise you will screw up the port.
Remember if anyone wants to try this I am in no way responsible for your damage.
Hope this helps those who have similar issues, being unable to boot up and caught in bootloop may not always be software or eMMc problems. Cheers
Alright, I've got a hum-dinger here. I've been running CM12 for some time now, I started noticing much more frequent blue screens due to modem crashes so I wiped and reinstalled the ROM. Now I'm getting a really strange problem where so long as the phone is plugged in to something (charger, or computer) I can use the phone completely normally. The moment I unplug I get 1 of 2 scenarios:
1: the screen immediately goes blank (no power down sequence, no blue screen) and I'm kicked back to LG splash screen which then proceeds to go to the power off state. Attempting to power on again gets as far as the CM12 boot animation and then screen goes blank again. I've tried powering on several times from the stage only to get part way through the boot animation and then kicked back to the black screen.
2: Screen does not immediately go blank, I can swim around the home screens scroll to an app, even start an app - but about 10 seconds into the app the screen suddenly goes blank and I'm back at scenario 1.
The only way to get the phone past the ROM boot animation is to plug it back into something....but then I can't unplug lest I end up back at scenario 1.
The shutdown sequence almost looks like I tanked the battery, but going into the recovery (TWRP) I can see that I actually have a good 98% left.
Thinking CM12 had some issues, I tried another Lollipop ROM (blisspop) and I got the exact same behavior. Thinking Lollipop was still half-baked for this LG I reverted back to a KitKat ROM (CM11) and I got....the exact same behavior.
I tried wiping all the data, system, cache, dalvik, partitions and reinstalling completely from scratch -- but I get the exact same problem. The only thing I haven't tried yet is LGNPST back to 100% stock, but I'm struggling to see what difference that would make as I'm wiping out everything except the recovery between tries.
Anybody have any ideas, thoughts, comments? I'm grasping at straws here.....
You could always try to load the stock rom back on the phone to see if that does anything. Another thing you can try is to power off the phone, plug it up to the charger and see if it charges overnight, however I have a sneaking suspicion that the battery is toast.
Kilogrm, I've left it charging overnight and and am able to carry it around all day without issue doing the occasional glance at the time, but if I try to do anything of significance I will end up at a black screen again, so I'm rather inclined to believe it isn't the battery. I do have a replacement battery that I bought a while back that I never got around to installing....so I could try that.
I'm guessing that if I'm going to install a stock ROM I might as well just LGNPST back to stock....thoughts?
Ok well I used LGNPST to go back to JellyBean Stock, and I got the exact same behavior. I'm thinking it might be a hardware problem, but not sure what.
Well, it was definitely a hardware problem. I opened up the phone and took a look at the rigid-flex board that LG used to connect to the micro-usb jack and I noticed that one of the footprints was missing a component. I quick look around showed that a small(looked like 0402 size) diode had somehow sheared off at the solder joint and was rolling around in the case. I soldered it back on, replaced the battery with the new one I had gotten and closed the phone up. Everything works like a charm again. Now I just have to go back through the root/freeg/rom process again because I flashed all the way back to at&t ROM.
Remove the back cover, remove tiny screws on bottom and pop the cover off. There are another two tiny screws holding the battery connector on the pcb. Unscrew the tiny screws and unplug the battery, then plug in to power. Then unplug, plug battery in and plug power in. Let it charge. This added 8 extra hours on my battery from 15 hours to 24 hours. It appears to be going up too if u drain it to 0 dead and charge to 100 and unplug. Do it over and over again forever and the battery will slowly repair the damage.
Is it hardbricked? I hope it isn't. I had 5.1.1 flashed on it and then wanted to downgrade back to 4.4.4, I had backup in TWPR, so I recovered it. Everything went fine, then I restarted the phone, it vibrates on start, screen turns on but is black and in about 10 seconds it restarts without logo appearing, can't access recovery and it restarts without stopping, the only way to turn the phone off is simulated battery pull. Am I done for sure or can I somehow save it? I am panicking very hard right now. It is in warranty, but I doubt they would fix it for me.
Also - when connecting to PC, the phone doesn't show up.
The problem will be solved if the phone was left to drain to zero! (Don't charge the device untill the vibrations stop . It could take 2 or so days but worth it!!. ). (Or you can remove the back panel by unscrewing 8 screws total and disconnect and reconnect the battery flux cable which is near to the sim slot 2) then charge the device to 100% and turn it on normally.
Hey guys, I was wondering if you had experience similar problems, this is giving me headaches for weeks now. I would very much appreciate any insights you can provide as I feel totally lost.
I spilled tea on my phone (Lenovo Vibe P1, no hacks), it worked just fine for a day, however did not charge and eventually got out of battery. I disassembled it, cleaned it and now when I plug it into a socket it enters boot loop (I see Lenovo logo for like 5 seconds and it restarts). I have replaced charging port circuit - no effect, perhaps a battery is fault?. If I try to turn it on while it's not charging nothing happens.
I am unable to access recovery mode, nothing happens and phone keeps restarting. What would you suspect the problem would be? Thank you very much.