I have a Samsung tab 3 8.0 but after going through airport security coming back my device had to be scanned twice by the airline as it was in my bag and ever since it has acted up.
My device battery is failing and the only way i can boot up my device is to take the back off and disconnect the battery and reconnect it.
It has died out several times since so was thinking is there a long term solution or is it worth getting a new battery for as i have had it for many years.
Do you have any recommendations for a new Samsung tab with a screen at least 8 inch and easily modified to remove bloatware.
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So I haven't used my G1 for about 2 years. I recently broke my LG G2X (dropped it at the river) so I started to use my G1 again.
It blows my mind how far Android has came in 2 years...
So anyways, I rooted my phone, running Gingerbread on it and all of that fun stuff.
Two weeks have past and so far nothing was wrong with it but one day my battery drains and then that is when all the problem starts.
It seems the battery wouldn't hold a charge so I bought a new phone off of craigslist ($35 G1) and used the battery on it.
The phone now holds a charge but my phone keeps unrooting itself and I have to re-login to all of my accounts.
Also sometimes when my phone dies the the bootloader screen comes up and it says no image file so I have to reflash it.
I have to do this so often its ridiculous and it seems like the phone only works well when it is charged up to something. What is causing the phone to reset itself?
THANKS GUYS!
OK so I got a first gen moto x with 4.4.4. Unlocked boot and it started to randomly shut off. Most of the time would not turn back on unless plugged into charger for extended period then just turn on over night sometime. The last time it was dead for days would not charge our anything unless on PC charge them green flashing light behind speaker would flash but even after a day still no go. Read in a couple of places that this meant the battery was not so low it could not charge ( so that was a couple opinions) just replaced battery and wouldn't turn on using power button plugged into PC to see if that would help, no green light this time, them after about 4 minutes it just powered on as if nothing wrong. Turned screen off by accident after disconnecting from PC and attempting to plug in, but instead of being screen off the phone was off.
Have not been able to find any solid info as to why our what was bad in the first gen to cause motto to make the second gen.
So is there any hope to get this going again our do I just bite the bullet and scrap the phone and find a used one with an unlocked boot?
Any help would be great, sorry for making long just wanted to answer any ? That are commonly asked as to not waste your time.
It could be a failing battery, or cell in the battery.
As for "Have not been able to find any solid info as to why our what was bad in the first gen to cause motto to make the second gen" Who said their had to be something "bad" about the phone? Have you considered a yearly upgrade cycle maybe? Like faster processor, bigger screen, etc. Think about how Samsung upgraded the Galaxy S4 to the Galaxy S5 to the Galaxy S6 every year. Apple upgrades the iPhone every year... HTC upgrading the ONE (M7, then M8, now M9), etc. Was there anything really wrong with the older model? No.
Upgrades for size, performance, etc are scheduled every 9-12 months now. I remember in the old days phones would stay on the market for two years before being upgraded/replaced.
I have an original Galaxy Gear, model V700 as always. A few months ago I had rooted it and flashed _nullrom to it. I grew bored of it and the battery life sucked worse than stock firmware so I reset the entire watch. Everything went back to normal, but maybe a month and a half ago I had offered it to a family member as a Fitbit replacement. They declined, so I just put it in a drawer and it eventually died.
Fast forward a month and a half later and I end up getting a Galaxy Note 5. I remembered I had my Gear, so I tried turning it on: No success.
I tried using the crappy 3rd party cradle I had gotten when I had bought it used: No success.
Tried at least 15 different power bricks/mUSB cords: No success.
Finally, a few days ago, I ordered the original charging cradle. Plugged it in. Still no success. I got a few half second flashes on the screen of the battery with the spinning watchhand on it, and I rarely get that, but so far no luck. I'm sure it charges as the watch and the case get warm, it just doesn't want to power up. It's not the screen as it flashed a few times. I unplugged and replugged the battery when I first took it out again. Any ideas guys? Don't wanna waste 250-300 on a newer Gear when I have a perfectly (un)usable watch right here...
This (half a second flashes) was the exact symptom I was having. Fixed by replacing the battery, see:
http://forum.xda-developers.com/galaxy-gear/help/sm-v700-battery-replacement-t3406665
Gear now fully operational, charged, everything working. Not difficult if you have some repair skills and tools.
Background:
* Galaxy Tab S 8.4 WiFi (SM-T700)
* Bliss ROM from a while back (don't remember build)
* Became unresponsive mid-2017, replaced battery and it worked immediately.
* Used tab a while but it's mostly a backup device
* Tried to use again in early 2018, dead again - unresponsive.
* Assumed cheap battery replacement, ordered Genuine Samsung replacement battery.
Today:
* replaced battery (again) with the Genuine Samsung battery I ordered.
* Booted up immediately with about 50% charge.
* Plugged it in to charge a while, got it to about 80%.
* Unplugged and left it alone a couple hours while I did other things.
* Came back to it - totally unresponsive.
* Tried disconnecting/reconnecting battery, plugging/unplugging from USB, tried the old battery again, tried plugging into USB on computer for a response - nothing.
Are you guys familiar with this set of symptoms? I'm really at a loss at this point and questioning whether this 3 year old Tab is worth my time to troubleshoot it. Sad, because it still seemed to work great during times I needed it.
Thanks in advance!
bump
I know this is a 5 year old post, but I've had the exact same problem for about as long, with the exact same hardware. I have a Tab S 8.4 Wifi SM-T700 (XAC) on stock firmware that was great for many years. Eventually the battery stopped holding charge, but we mostly use it plugged in anyways so no biggy. The issue is that the screen would glitch out to a green line and power off when the wife was playing Township, but it was otherwise pretty stable.
Instead of buying a new tablet, I bought a new "genuine" samsung battery. Visually it appeared to be an exact match, but I suppose I have no way to know for sure. After the new battery went in, it charged and worked great for many months. The problem is, that the battery seemed to degrade so much faster than the original and returned to the green line glitch of death within about a year.
I have long suspected that there is a hardware issue in the charging circuit that is prematurely killing the batteries, and that additional battery swaps will suffer the same fate due to this.
I am attempting to install a custom rom to see if it is a software issue or something, but I can't even get the system to boot beyond the Samsung logo currently on the stock firmware, but I can get into download and backup mode without issue.
Out of ideas but I would totally attempt to replace a pcb component if someone had a map. My google searches over the years have not yielded much.
Super old hardware, already bought a replacement for the couch, but I'm hoping to just have it plugged in permanently as a fixed screen below my PC monitor for youtube and hand writing input and the like.
Any thoughts are appreciated!
So i bought this note 4 off ebay. My other note 4 is busted (screen popping out, turns on and off) and i didn't want all the stuff i had for it to go to waste, i have a newer S8 too but i need a spare phone.
And off the box it would not turn on! This was fine you know because i was used to my old note 4 needing to be perpetually charging to stay on. That's just how it is i guess.
But to my surprise the real issue came up.... It wouldn't recognise charging! I put its battery on my old phone it had like 78% charge and was able to charge. I tried my old battery on it and it also wouldn't charge or turn on. So... i took the phone to a shop and was turned away cause they gave up and the other offered to replace the charging port for $150AUD then $120AUD (seemed like a an obvious scam).
They were able to boot the phone! Just from messing around with the battery more. And it seems if the phone is able to boot it can charge. I also did rigorous tests at a local food court like fingerprint, nfc tap and pay and flash photography is fine. However.... even though it was plugged into a power bank and was at 70% battery the phone died... And guess what it wouldn't boot and it wouldn't charge again.
I took it home.... My friend lent me his note 4 on the way with a newer battery. Over the night i got down a method of mitigating the issue... It seems the phone has an inability to initiate the battery to charge when it dies. By that i mean 100% of the time if i can replicate the issue by letting the battery die from there it won't charge the battery or boot. So the most reliable way to restart it is that you need another note to initiate the battery any note 4 even my busted Note 4 would do and you charge it for like 5 seconds then you plug that battery onto this note 4. I made an imgur post about it imgur.com/a/wxVj4AE
This makes sense of why the phone booted at the repair shops as i had initiated the phone on my old phone on the way back by chance. The weird screen also confuses me. Odin i recognise as custom rom thing perhaps it was previously rooted then improperly installed with stock samsung rom.
30% of the time there is this bootloader screen that comes up. "Could not do normal boot", "ddi: mmc_read failed", "Odin mode (high speed)", "system status: custom". The appearance of odin mode and system status = custom leads me to the idea that this once was rooted then rooted back to stock android. With further research i have also discovered that "ddi: mmc_read failed" is a system wide issue which i can maybe fix by 1) re-flashing with stock android and hope that fixes it 2) sending it to samsung to repair or replace for like $70 US 3) have some app to keep it awake almost all of the time in some form.
However i haven't seen this mmc issue be connected with ignoring chargers and not booting.
imgur.com/a/Li39YkD
Thanks
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