Develop Bugs

[Q] Rooted Motherboard Issues?

Knowing that this is my last resort and with all the wonderful knowledge here on the forums, I'm hoping I might get some creative ideas.
I recently bought a Tab S 8.4, rooted it about 2 weeks after I got it. No problems, everything is working great. Last week, the screen starts to flicker and the tablet reboots randomly. When it does this, the battery goes from 100% down to 12%. Eventually this happens enough where the tablet won't stay on for longer than a minute. Read around the forums and find others mention the exact same issue. Potentially a battery pull/re-plug may alleviate. Tried that to no avail.
I have found that if I hold the battery plug in place *real* tight, by pushing down with my finger, the tablet operates somewhat normally. Could be a motherboard issue.
Anyone run into this at all? Thoughts? Ideas? Replacement parts? I've got a $500 brick on my hands now with no warranty to boot. :crying:
Thanks in advance!

I soldered my battery straight to the board. But before doing that, try spraying some contact cleaner (found in hardware stores) and see if it Will work

hey, i got this issue once ! go to customer service,they will fix it for you in 5min FREE !

sku|| said:
hey, i got this issue once ! go to customer service,they will fix it for you in 5min FREE !
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Which customer service are you referring to? A local samsung customer service?

Squez said:
Which customer service are you referring to? A local samsung customer service?
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Click to collapse
yes, samsung service center

sku|| said:
yes, samsung service center
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So they took off the back cover and soldered it back in for you for free with no warranty? I'm a bit surprised they would do that. I'll have to see if I have one in my area.

Please keep us updated
Squez said:
So they took off the back cover and soldered it back in for you for free with no warranty? I'm a bit surprised they would do that. I'll have to see if I have one in my area.
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Hey Squez please keep us informed and if you get this problem resolved. I am not gonna root my Tab S until I know its safe to do so... thanks and good luck.

TeeShark said:
Hey Squez please keep us informed and if you get this problem resolved. I am not gonna root my Tab S until I know its safe to do so... thanks and good luck.
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I found a local electronic repair shop that said they could re-solder it for me relatively easily. Brought it in and he said it did look like the terminals on the battery plug had been pulled back a little bit and weren't soldered on there very good (good to hear some type of confirmation on that and he let me view it through a microscope as well). Twenty minutes and twenty dollars later, my tablet is working as it did previously. I've used it sparingly over the last 2 hours, so nothing definitive yet, but the fact that it doesn't restart right away makes me think the issue is resolved.
Thanks everyone for the suggestions!!

Sweet

Squez said:
I found a local electronic repair shop that said they could re-solder it for me relatively easily. Brought it in and he said it did look like the terminals on the battery plug had been pulled back a little bit and weren't soldered on there very good (good to hear some type of confirmation on that and he let me view it through a microscope as well). Twenty minutes and twenty dollars later, my tablet is working as it did previously. I've used it sparingly over the last 2 hours, so nothing definitive yet, but the fact that it doesn't restart right away makes me think the issue is resolved.
Thanks everyone for the suggestions!!
Click to expand...
Click to collapse
eh? 20dorra ??

Squez said:
I found a local electronic repair shop that said they could re-solder it for me relatively easily. Brought it in and he said it did look like the terminals on the battery plug had been pulled back a little bit and weren't soldered on there very good (good to hear some type of confirmation on that and he let me view it through a microscope as well). Twenty minutes and twenty dollars later, my tablet is working as it did previously. I've used it sparingly over the last 2 hours, so nothing definitive yet, but the fact that it doesn't restart right away makes me think the issue is resolved.
Thanks everyone for the suggestions!!
Click to expand...
Click to collapse
Glad to hear you got it working bro.. seems.like a samsung quality or even design issue, they got plenty of space yet decided to use a very small terminal

Battery Results
Just wanted to follow up with everyone that might be experiencing similar issues. After fixing the issue, and de-bloating a bit, my battery life is phenomenal. Much better than when I first got it. I suspect the battery issue was causing some drain as well, even when it wasn't restarting. The attached screen is still with 35% battery left.

Thanks to all those who contributed to this thread. I too was having battery issues. I'd get random restarts, disconnects from the cellular network, forgetting wifi passwords, battery that would go from 50% to dead in three seconds., display glitches etc. I finally opened up my tab which I thought was going to be a pain but was actually pretty easy. By naked eye the solder joints looked fine but under a microscope I could see that all six solder joints on the battery connector were cracked and by pressing on the connector could see the connector move independently from the PCB. Resoldered the joints and everything is good now.

Well my problem is that the battery isn't charging, I get a battery with a red "X" mark when the screen is on but when it is turned off, its charging well but very slow and when it reaches 99% it never goes to 100%. Could it be possible I have the same problem as you guys? no random restarts for me just the issue of sucky battery life (3 hours on wifi) and not charging
Squez said:
Just wanted to follow up with everyone that might be experiencing similar issues. After fixing the issue, and de-bloating a bit, my battery life is phenomenal. Much better than when I first got it. I suspect the battery issue was causing some drain as well, even when it wasn't restarting. The attached screen is still with 35% battery left.
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Which bloat apps did you exactly remove?

drmodify said:
Well my problem is that the battery isn't charging, I get a battery with a red "X" mark when the screen is on but when it is turned off, its charging well but very slow and when it reaches 99% it never goes to 100%. Could it be possible I have the same problem as you guys? no random restarts for me just the issue of sucky battery life (3 hours on wifi) and not charging
Which bloat apps did you exactly remove?
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Are you using the stock Samsung charger? Just plug it into the wall and it should be fine. Don't charge from the computer or use a different charger

Got that same problem. My tab will only charge up to 60% under 6 hours. Batterystatus app shows that my 2amp wall charger is just charging at 300mah +/- . Tried my power bank, same issue. Changed the cable and the reading from the wall charger is 1800mAh , could top up the battery in 2hrs

DUHAsianSKILLZ said:
Are you using the stock Samsung charger? Just plug it into the wall and it should be fine. Don't charge from the computer or use a different charger
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Click to collapse
Using wall charger. Never charged via pc...
Any Ideas?

I have experienced this. Flickering of the screen which eventually leads to reboots. Got it fixed at a samsung service center. You rooted it but you're on stock ROM right? I think there's a problem when we root it and stick with the stock ROM. When I rooted my tab again, certain apps started FCing which lead to lags. So I'm gonna wipe this and start from scratch.

tab gets flickering screen and reboots

I dropped by tablet battery down once and now every so often the screen flickers with vertical lines and this is followed by loss of network and the thing reboots.
I've read this to be a battery problem.
Warranty is still active but I've rooted it and my Knox counter has gone up.
What do you think XDA? Just get a replacement battery?

NightShadow02 said:
I dropped by tablet battery down once and now every so often the screen flickers with vertical lines and this is followed by loss of network and the thing reboots.
I've read this to be a battery problem.
Warranty is still active but I've rooted it and my Knox counter has gone up.
What do you think XDA? Just get a replacement battery?
Click to expand...
Click to collapse
If you have the ability, since it was dropped, I would open it and make sure connection is tight to battery and screen. Then if it still acts up, get a battery. Several people had battery issues out of the box. All it turned out to be for a few was a loose connection.

i was thinking about that but i'm afraid of voiding warranty. do i even still have warranty? due to the knox?

flhthemi said:
If you have the ability, since it was dropped, I would open it and make sure connection is tight to battery and screen. Then if it still acts up, get a battery. Several people had battery issues out of the box. All it turned out to be for a few was a loose connection.
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Click to collapse
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.

NightShadow02 said:
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.
Click to expand...
Click to collapse
I'm not by any means an expert or repairman of any kind, just so you know. I'm thinking maybe a loose connection at the terminals on the board the battery connects to or if they use a separate board for the battery to connect to and then to the main board it may be somewhere along in there. Maybe a loose wire going into the tab that connects to the prongs. It sure sounds like something isn't making a good connection. Sounds like a load gets put on it and it and that bad connection can't handle the load.
Might just be you're going to have to send it off...

You may be right. Sounds like a particular connection which does higher load or something. Once i put the tablet in power save mode, the symptoms never reappeared. I dont notice a drastic slowdown in the tablet either. Probably am prolonging the inevitable.

Same Symptoms
NightShadow02 said:
You may be right. Sounds like a particular connection which does higher load or something. Once i put the tablet in power save mode, the symptoms never reappeared. I dont notice a drastic slowdown in the tablet either. Probably am prolonging the inevitable.
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Click to collapse
I am facing exactly same issue what you have described and am in same situation, have tripped Knox on my Tab S 8.4.
I can see that you have been able to suppress the behavior by putting it to Power Saving mode. Have you experienced flicker and reboot since then? I am planning to take it to Samsung store not sure if they will honor warranty, did you tried that?

misrasandeep said:
I am facing exactly same issue what you have described and am in same situation, have tripped Knox on my Tab S 8.4.
I can see that you have been able to suppress the behavior by putting it to Power Saving mode. Have you experienced flicker and reboot since then? I am planning to take it to Samsung store not sure if they will honor warranty, did you tried that?
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Click to collapse
nope, ever since the Power Saving mode solution, it hasnt flickered and rebooted yet. and my warranty was expired by that point so i didnt bring it to the shop. no noticable reduction in performance so far

possible battery connector
NightShadow02 said:
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.
Click to expand...
Click to collapse
I have seen this problems on 2 tablets 10.5 and 8.4 the connector where battery is connected on motherboard gets loose which causes reboots and flicker
Solution in my case was resoldering that connector again

i had the same problem, opened up my tablet, just disconnected the battery, cleaned the contacts, pushed it back, made sure its nice and snug, put it all back together and now battery doesn't drain as fast, no more flickers and reboots!

hmm. i'll have to give it a try. you think this may be something to do with condensation?

Sorry for the bump, but I'm having this issue as well on my S 8.4. Custom ROM. The thing with me is that it's not consistent. One day, it will do it a few times; others, no issues whatsoever. I'll try the suggested if it gets progressively worse.

Hey guys,
Unfortunately our home's tablet (Tab s 8.4 Wifi) has the same problem.
It never did weird whatshowever, but when I flashed a custom rom (which went perfectly smooth actually) the screen flashes and the tablet reboots sometimes.
Now it weird that this never happened before and only when I flashed a custom rom it began showing this behaviour.
I am affraid of opening this tablet, and I guess because of the custom rom there is no warranty left anymore (or can this be bypassed by some terminal trick?)
Also I question myself if this is not a software issue, and that it can be fixed with software or so?
Thanks for answering!

My Fix
Hey Guys!
I might have some surprising news to tell about this "issue".
I saw some unboxing video's and saw at what place the battery connector was placed. It was some sort of a 'push to click' system.
So what I did was the following:
I pushed the tablet at the place of the battery connector. I tried this at various places until I heard a *click*.
Now I don't have this issue anymore. Jay!
I hope this will help you too!

I started to have the same issue on a Tab Pro 12.2, presumably after the battery has lost considerable amount of its energy. Normally I remember this tablet to have a dazzling 10+ hours of usage time. Just after some serious usage time of more than 2 years this issue started, along with increasing temperature and finally reboot. From time to time Android gave a warning message about overheating. From time to time charge values drop big values at a time. From 45 to 20 or 80 to 50. Seems arbitrary. This was happening even when I was on stock, then I switched to some Android 6 stock port from some other tablet. Still the same.
I believe the battery needs replacement. (That's obvious after 18 months, I just mean blinking is related to this) Hope I can find a high quality one cause there are several garbage batteries.

Is my battery shot??

Hi,
Looking for a wee bit of guidance, from the experts here, prior to taking some drastic measures.
I've had my Z1C for just over 2 years (I just switched over to a sim only deal a couple of weeks ago). I'm quite happy with everything, and it still runs fine - apart from what appears to be a dodgy battery life. Battery has always been fine, until about the last month, when I noticed things becoming a bit funny.
Here's a screenshot of what happened yesterday, when I got home. I put my phone in my gym bag around 1930 (when the network went red), and then got home around 2200. When I got home, it was still in my gym bag, although would be connected to wifi. I went to bed kinda late at 0230 (ooops), and when I got it out my bag (I use it for my alarm), I was amazed to find it completely dead. Can anyone explain why it appeared to lose 50% of battery within a few minutes??
Should I do a factory reset?? Is the battery totally gone, and am I looking for a new phone??
Many thanks in advance!!
BB

bawbagg said:
Hi,
Looking for a wee bit of guidance, from the experts here, prior to taking some drastic measures.
I've had my Z1C for just over 2 years (I just switched over to a sim only deal a couple of weeks ago). I'm quite happy with everything, and it still runs fine - apart from what appears to be a dodgy battery life. Battery has always been fine, until about the last month, when I noticed things becoming a bit funny.
Here's a screenshot of what happened yesterday, when I got home. I put my phone in my gym bag around 1930 (when the network went red), and then got home around 2200. When I got home, it was still in my gym bag, although would be connected to wifi. I went to bed kinda late at 0230 (ooops), and when I got it out my bag (I use it for my alarm), I was amazed to find it completely dead. Can anyone explain why it appeared to lose 50% of battery within a few minutes??
Should I do a factory reset?? Is the battery totally gone, and am I looking for a new phone??
Many thanks in advance!!
BB
Click to expand...
Click to collapse
Hard to say after only 1 time. Wait it out and see if it happens again, it could have been a fluke. It's fairly common - http://forum.xda-developers.com/son...ttery-reporting-phone-dying-suddenly-t3095120

levone1 said:
Hard to say after only 1 time. Wait it out and see if it happens again, it could have been a fluke. It's fairly common - http://forum.xda-developers.com/son...ttery-reporting-phone-dying-suddenly-t3095120
Click to expand...
Click to collapse
@levone1, many thanks for the link. I'm not a frequent visitor here, and hadn't done a thorough search. That thread will be interesting reading.
BB

Just for anyone reading this - my phone is experiencing the same problems - shutting off with anywhere from 40-60% battery left. I've read through the thread linked above, and the only resolution is a replacement battery.
I've ordered a battery and replacement rear cover from www.replacebase.co.uk, which should arrive early next week. I'll do the fix and report back.
BB

bawbagg said:
I've ordered a battery and replacement rear cover from www.replacebase.co.uk, which should arrive early next week. I'll do the fix and report back.
Click to expand...
Click to collapse
Battery and replacement rear cover arrived on Saturday morning - less than 48 hours after placing the order. I followed any one of the numerous videos on youtube showing phone dissassembly and battery replacement, and all went fine. Phone is like new now. You do have to carefully remove the NFC sticker and transplant it onto the new battery - make sure to line up the little pressure connectors.
Again, many thanks to @levone1 for his help.

Have you wiped your system battery stats file? Have you changed your ROM recently? If both questions have the answer "NO" - it is worth it to find some guides (here in XDA) for deleting the battery stats - it isn't guaranteed to actually notice any difference, but it is good to try (especially now, with the new battery)
I'm waiting for my replacement battery too as I suspect that my battery is going to be dead soon. It is heating up rapidly when the charge is below 20-15%.

same here. it lasts for past few months, persists thru rom variations (cm, aosp, stock) and sometimes gets better for a while but goes bad again. suddenly drops from anything above 50% to as low as about 20%, and then to zero & shut down in matter of minutes. back on charger it goes from zero to 100% in about 15 minutes, i guess my charger evolved overtime to extra quick one. lately the full charged battery doesn't lasts morning to afternoon with moderate usage. as the behaviour persists between roms and as there are no suspicious wakelocks either, i guess its hardware thing not fixable by wiping battery stats or similar mumbo-jumbo, so i replaced battery the other day and now the phone is perfectly fine again.
however, as there are a large (and growing) number of similar posts and same-looking screenshots all around, device is circa two years old, and minding that the battery isn't replaceable easily like "open the back cover and replace", it all looks like sony managed to put two-year batteries inside waterproof case that goes dead just by the end of usual user's contracts, so you could either go to service for replace or - yes you're right - buy a new device by the end of contract for us that aren't on the contract but we did unlock the bootloader the price of official-service is sky high because of unlocked bootloader, at least in my country. in the end it's all corporate math, pardon my conspiracy theory

Google "google play services 9.2.56 battery drain" and you see people with all sorts of phones and tablets having the same issues.*

Shortened battery life, random reboots, intermittent WiFi ... sound familiar?

I have the SM-T320 (Galaxy Tab Pro 8.4). About 5-6 months ago, I noticed that its battery life began to get much worse (used to last easily through the day, now only lasts a few hours of fairly light use). About two months ago it started suffering from random reboots at odd moments. I had been using one of the CM ROMs and tried others to see if I could solve the problem, with no success. Over the last few weeks the reboots have become so frequent that the tablet is unusable (random reboots every 10-15 minutes) and WiFi has also become unreliable -- the tablet seems to be able to "see" my home network, but can only occasionally get an IP address (even though the signal is strong and other devices have no problem).
Based on the fact that these symptoms have persisted through different ROMs, I strongly suspect it is a hardware issue.
I am wondering if anyone else has experienced these types of symptoms, and if so, how you solved the problem. I don't want to start opening up the tablet unless there is a good chance of success. Is this something a battery re-seat would fix?

Well the second Tab Pro I bought, after trashing the one I received for Christmas. Had a broken Anntena. No clue how that could have happened. As it's a very tiny Board that sits in the lower left Corner that has a Socket on one Side and the missing Gold Finger on the other. The upshot of that was I could only pretty much see the local Net. And Bluetooth had like Zero Range. Replacing that Part with the one from my first Tab Pro I managed to fix that.
As to the Battery, again the consensus here is that it's likely a somewhat lose Battery connection. So I would investigate those Threads for more Details.

Thank you. I did open up the case and re-seat the battery -- and the result was a boot loop, so now I'm not even able to assess the Wifi issues. I will have to spend some more time on it.

Might be a failed battery.
Sent from my SM-G900T

^ That thought crossed my mind as well. The behaviour I'm experiencing at the moment is as follows:
When I plug in the USB charger, I get a boot loop ("battery charging" icon followed by a few lines of text on the screen, followed by a "battery charging" icon, followed by a few lines of text on the screen, etc.) This happens even if I haven't tried to turn the tablet on.
By holding down the power key and the volume-down button I'm able to get to the "install custom ROM" screen but can't continue past it -- pressing any other button only gets me back into the reboot loop.
I found a few tips online that I'll try out later -- otherwise I'll have to decide whether it's worth it to buy a replacement battery (anyone have a good source?)

-The shortened battery life must be due to being used excessively maybe.....It is recommended that you factory reset the device every 6 months so that it doesn't get wasted like that.
-And the reboots is probably because the Memory being used too much as well, once a limit has been reached it reboots so that it doesn't blow up!
-The wifi issue is very common, the SMT320 has a problem connecting to poor connection wifi...make sure your speed is fast enough and is quite close enough to the router. If that doesn't help, try restarting your router, mostly works.
The boot loop is a very annoying thing, make sure you are not dirty flashing and do a clean one,i,e, wipe your system,data and cache and flash a simple and smooth rom....your choice.
Hope this helped in some way....

Amazon... 20.00 prime
Sent from my SM-T320 using XDA Free mobile app

JHW3 said:
Thank you. I did open up the case and re-seat the battery -- and the result was a boot loop, so now I'm not even able to assess the Wifi issues. I will have to spend some more time on it.
Click to expand...
Click to collapse
I have a bit of an update on this, for anyone following along or who finds this thread in the future. Re-seating the battery -- for a third time -- ended up solving the boot loop. The key was that I needed to leave the battery disconnected for an extended period of time (overnight). Things are mostly back to normal now, though the battery life is not what it used to be, so I may buy a replacement.

Tried rolling back to stock?
Had a lot of random reboots with cm, so I tried rolling back to a deodexed, deknoxed, debloated stock ROM.. problem dissapered... Then came back now after I've had the tab for 18 months. But only happens when battery is below 50% and screen light is fixed (turning on auto dimmed the screen a bit but stopped the reboots).
I have a T325.
Cheers!

Battery drops from 50% to 0%

Hi
My Z1C is 2,5 years old. I had a custom rom with locked bootloader. About a month ago it started to drop the battery capacity very fast. Today I wanted to speed up the drain and it took 8 minutes of GTA:SA to drop the battery from 65% to 0%. It was dropping slowly from 65% to 50%, then fast to 38% and it shut off at 38%. Then it has completely no power, when I tried to power it on only red led blinks. In normal usage it can drop from 50% to 0% in a half of hour, even when I just check the time.
Xperia Companion repair didn't solve the problem.

Reflash the custom rom and check if this dont work then battery damaged u need to buy new one. Coz battery after 2years of use loses its capacity.

I reflashed it and didn't work. Now I'm using stock rom flashed by Xperia Companion for a week and it also didn't solve the problem. AccuBattery shows that the estimated battery capacity is just 756mAh after a 0-100% charging. I think I will try replacing the battery, hope it will solve the problem, otherwise I will have to throw a fully working and still almost as new looking phone 0_o

I too had Same problem just like yours... Replacing With New battery helped me. But make sure battery is Genuine.

Now I see that the plastic frame is deformed because the the battery has grown up a bit. I can easily put my nail between this plastic frame and the aluminium frame ;d
So I need to buy a new battery, plastic frame, back cover, USB cover, bottom speaker cover and a back protector film. I hope it's worth it.

If the back cover and the other things you mentioned are not damaged you shouldn't buy them.
I had the same problem, buy a new battery and a back cover sticker, with 15€ you will revive your z1c
Notice also that the phone is old, buying things worth 50€ is not a good deal

I bought it all for about 19€. A back cover with a sticker was same price as a sticker only so I bought it

Hey everybody,
I´m new here but read some very heplful post before. So now I have a real issue with my device, same like you.
My Z1c turns off when 50% of battery is used. It mean I can use my phone from 100% to 50% and then it drops to 0% or from 65% to 15% and then 0%...
I read the linked articel from androidpit.com here on xda about battery calibration and I wanted to ty it soon. I relly hope that will fix my problem...
But I´ve noticed something different too.
I dont know if you have the same issue or not but maybe some of you can help me.
I´ve noticed that when I open file commander app and tap on internal storage there are no folders... it says it´s emtpy, no foldes nor files, that´s a little bit weired I think.
And seconde thing I´ve noticed.
When I look up the storage usage in settings, android is calculating App, pictures, audio, downloads, cache data and also misc. but when its finished the misc. section isn´t there anymore I wonder if its normal or not.
In my opinion it´s not usual that the misc. section disappears.
I hope someone can help me with my issues and give me some advice to fix them.
Thanks for your help and I apologize for my bad english...

ryanflow said:
Hey everybody,
I´m new here but read some very heplful post before. So now I have a real issue with my device, same like you.
My Z1c turns off when 50% of battery is used. It mean I can use my phone from 100% to 50% and then it drops to 0% or from 65% to 15% and then 0%...
I read the linked articel from androidpit.com here on xda about battery calibration and I wanted to ty it soon. I relly hope that will fix my problem...
But I´ve noticed something different too.
I dont know if you have the same issue or not but maybe some of you can help me.
I´ve noticed that when I open file commander app and tap on internal storage there are no folders... it says it´s emtpy, no foldes nor files, that´s a little bit weired I think.
And seconde thing I´ve noticed.
When I look up the storage usage in settings, android is calculating App, pictures, audio, downloads, cache data and also misc. but when its finished the misc. section isn´t there anymore I wonder if its normal or not.
In my opinion it´s not usual that the misc. section disappears.
I hope someone can help me with my issues and give me some advice to fix them.
Thanks for your help and I apologize for my bad english...
Click to expand...
Click to collapse
Hi
I tried one full discharge and then a full charge when the device was powered off and it didn't work. I bought the parts from aliexpress and a local shopping website so I will get them all in a month, then I will replace them, do some tests and post the results here.
About the files, you can try another file manager or clear file commander's data. I use the MK Explorer.
Next question, you just don't have any misc files, but the system has to search them so it appears at the beginnging. If you remove all files from the download folder, it will disappear too

I calibrated the battery and it shuts off at 0% properly, but its capacity is still 700mAh

The battery I bought turned out to be 14W10, so it's older than the original one... And it is complete garbage with 100mAh capacity (power off at 95%, lol).
I need another one.
Is it possible to get a genuine battery produced in 2015+?
I found these 17W, are they fake?
http://allegro.pl/ShowItem2.php?item=6978618040
http://allegro.pl/ShowItem2.php?item=6994928458

I bought mine 4 weeks ago on amazon. But I am not not sure if you can buy there: https://www.amazon.de/gp/product/B01MZ8RSCK/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

It is 2500mAh, I don't want my phone to explode

This is only the battery capacity I think. Yes, I was wondering also because the original has 2300. But for me it is working now.

Hi again,
I bought a new battery, maybe it's genuine, maybe not, I'll never be sure. It looks legit anyway. It came without NFC sticker and it was produced in the half of this year. It is running well from the beginning, it took me almost two hours of playing GTA:SA on max settings with 100% brightness and GPS turned on to drop the factory loaded 43% The first result of time with regular usage is shown in the screenshot (stock rom):
AccuBattery stats
Battery usage
Looks good Hope my Z1C would work fine for another year or two

tau45 said:
It is running well from the beginning, it took me almost two hours of playing GTA:SA on max settings with 100% brightness and GPS turned on to drop the factory loaded 43%
Click to expand...
Click to collapse
So your mobile got a second life.

Downgrading to a 4.4.4 Cyanogen Rom cured this for me permanently. Still I am trying to find a 5.x or better Rom which has no battery issues...

Hey @jho55, does it still work fine for you?
My phone now needs definitely a new battery.
It turn off at 95%...
@tau45 which battery have you bought?
When I replace it, do I need to flash the Rom again?

ryanflow said:
@tau45 which battery have you bought?
When I replace it, do I need to flash the Rom again?
Click to expand...
Click to collapse
I bought
http://allegro.pl/ShowItem2.php?item=7030978271
Because I could collect it in my city and check it. I had to stick the NFC sticker to this but it was no problem.
You don't need to reflash the ROM

ryanflow said:
Hey @jho55, does it still work fine for you?
My phone now needs definitely a new battery.
It turn off at 95%...
@tau45 which battery have you bought?
When I replace it, do I need to flash the Rom again?
Click to expand...
Click to collapse
It is still working for me. I also bought the following. Especially the toolkit really helps:
tools: https://www.amazon.de/wortek-Univer...coding=UTF8&psc=1&refRID=WFD1G0EEM8P9XZS014SX
glue: https://www.amazon.de/Dichtung-Akku...coding=UTF8&psc=1&refRID=WFD1G0EEM8P9XZS014SX
You do not need to flash anything again. If you use NFC, you need to add the antenna on the new battery. I am not using it and I will never do, so I just kept it on the old battery.