Database Develop

[Q] Some questions in dead power button

I have a dead power button that I think is broken or have a dust in it that can't make it work.
I have read several threads about it.
For example the phone is off and i cant turn it on by power button is there any way to make it on?
using ADB?
or using a CM7/CM9 ROM? (some says that if you plug the charger it will automatically turn on)
or any methods that you can recommend?

I can relate, it's becoming quite common. Mine is slowly dying. I have volume rocker wake enabled and touch wake also. My understanding from reading other peoples problem is that it should turn on when plugged in with ics.
But if you are not on ics then i don't know how you'll turn it on to flash.
Sorry i cant help more
Sent from phone with app

Mine died to....get a rom that can utilize the volume wake feature to use ur power buttons...I did that for a while until I got it fixed like last week
Sent from my SGH-I897 using xda app-developers app

Thanks you too. Im using legend 5 and got MIUI locker for a while that it can wake up by using vol buttons. Used button remapping also for the power function. XD
Sent from my SAMSUNG-SGH-I897 using xda premium

Do at your own risk:
It's really easy to use a small( I mean correct size for the screws) screwdriver and pull the back plate off the phone and give everything a good cleaning out. You won't believe the junk you find in there. Chances are there's junk up in the power button. I used to have power button issues till I took it apart and cleaned it.
There is a guide(with pics) to tear it down and put it back together somewhere....
I've probably disassembled mine 3 or 4 times. Never had any trouble i only use 3 of the 6 screws to hold the back plate on. it's easier to deal with only three.
also you can use your fingernail to peel back the plastic by the screen and power button area. once you do this try your best to press your lips up to the phone and blow air through the crack. I use this almost every two weeks to get my power button to behave properly.
I think it's possible to replace the power button, might require soldering. I'm not sure, I've never needed to do it.
Hope this resource helps

Power Down Freeze?

Okay guys so I know that there are a ton of threads discussing the issue of not being able to power down the Captivate. What I haven't seen are alternative solutions. Like if I broke the power button off the mobo would this tear my phone up completely or would it stop the phone from thinking it was constantly being stuck. I did the key test and didn't see it as stuck or being pressed yet when I remove and insert my battery it turns on. Is there anything else I can do other than paying money I don't have to fix it? I tried the CRC cleaning method like six times and nothing. Please try and think of other ways to fix this. I have MANUALLY remapped the Volume Up button to be the power button and when I select power down it starts to power down then vibrates and freezes. Also if the phone is plugged in I can get it to power down to the battery charging screen yet when I unplug it, it powers on. I know you guys are extremely smart so I'm sure we can find a fix to the freezing when powering down without shipping our phones off.
Sent from my SGH-I897 using Tapatalk 2

HTCTerrorist said:
Okay guys so I know that there are a ton of threads discussing the issue of not being able to power down the Captivate. What I haven't seen are alternative solutions. Like if I broke the power button off the mobo would this tear my phone up completely or would it stop the phone from thinking it was constantly being stuck. I did the key test and didn't see it as stuck or being pressed yet when I remove and insert my battery it turns on. Is there anything else I can do other than paying money I don't have to fix it? I tried the CRC cleaning method like six times and nothing. Please try and think of other ways to fix this. I have MANUALLY remapped the Volume Up button to be the power button and when I select power down it starts to power down then vibrates and freezes. Also if the phone is plugged in I can get it to power down to the battery charging screen yet when I unplug it, it powers on. I know you guys are extremely smart so I'm sure we can find a fix to the freezing when powering down without shipping our phones off.
Sent from my SGH-I897 using Tapatalk 2
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Click to collapse
The crc method works most of the time for me. One of my Cappys the crc didnt work on and since it was a spare I wasn't gentle with it. I took the mainboard out of the phone and holding it I smacked the exposed button on the corner of a table a few times and haven't had an issue since....and yeah, it's pretty easy to rip it off too if you just want to break connection....On an old board, since the button is so small I just ripped off the button and soldered small wires to the contacts and attached an external button...looked funny but it worked....
Sent from my SGH-I897 using xda premium on Captivating X8.1
---------- Post added at 05:41 PM ---------- Previous post was at 05:35 PM ----------
Also, when I use the crc, I take out the mainboard and use the crc straw extension to push in the button and spray like that so it can really get inside the button casing. Then I tap the button rapidly off a table or a wood block....good luck, I know it's a pain...
Sent from my SGH-I897 using xda premium on Captivating X8.1

If I break it off though and put nothing in its place will I still be able to use my phone? Also if I'll still be able to use my phone with the button gone will I then be able to power it off with out it freezing?
Sent from my SGH-I897 using Tapatalk 2

HTCTerrorist said:
If I break it off though and put nothing in its place will I still be able to use my phone? Also if I'll still be able to use my phone with the button gone will I then be able to power it off with out it freezing?
Sent from my SGH-I897 using Tapatalk 2
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I used mine no problem with the button pulled off of it. I turned it on one of two ways. Either with a failed jig I made that wasn't quite enough resistance to put it into download mode, but when I inserted it it would just power on the phone, or I would use a cable I made for dock mode which would also power on the phone.....As far as actually freezing when powering down, I have only seen that on one of my phones running gamerz rom. Usually when the button is stuck it just restarts after you power it off, but for me with gamerz rom, it instead was just locking up and the screen would stay on till a battery pull, or holding volume buttons and power button for about 5 seconds.(actually I just held the volume buttons since the power was stuck on).
In short though, if you pull the battery and put it back in and the phone boots up on its own, it is definitely the button stuck on.

Yes mine is stuck on and I want it to stop so I guess I'm ripping the button off haha
Sent from my SGH-I897 using Tapatalk 2

HTCTerrorist said:
Yes mine is stuck on and I want it to stop so I guess I'm ripping the button off haha
Sent from my SGH-I897 using Tapatalk 2
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lol before you rip it off, you may as well try hitting the button against something a few times to see if it helps....you would be better off with a power button than trying methods through the usb to power it on from a powered down state. Besides, to rip it off means you gotta take out the main board anyway, so it may be worth a shot.....If you do just rip it off the board, you can find a thread here on resister values to make a usb dongle that will turn the phone on.
Just saw your other thread about a jig so you have the resistors and probably the thread too....If you have any doubt about resistors and about any other electrical components I recommend an app called electrodroid. it has a free version and is very handy in helping with resistor values and the color coding.

I can CONFIRM that taking out the main board and CAREFULLY prying the power button off or using small pliers DOES stop the phone from freezing on power down and I ALSO found out that my Download mode three button combo now works!!! So if you're in a pinch for money and your power button is stuck in the ON position and need to flash back to stock or need download mode to work. This is a great temporary fix. Then when you get the cash just order your button and have someone that's good at Soldering solder it on for ya.
Sent from my SGH-I897 using Tapatalk 2

rmntruexjr said:
lol before you rip it off, you may as well try hitting the button against something a few times to see if it helps....you would be better off with a power button than trying methods through the usb to power it on from a powered down state. Besides, to rip it off means you gotta take out the main board anyway, so it may be worth a shot.....If you do just rip it off the board, you can find a thread here on resister values to make a usb dongle that will turn the phone on.
Just saw your other thread about a jig so you have the resistors and probably the thread too....If you have any doubt about resistors and about any other electrical components I recommend an app called electrodroid. it has a free version and is very handy in helping with resistor values and the color coding.
Click to expand...
Click to collapse
Yes I have the stuff but I don't need it now haha as my Download mode now works. I read that builds 1010 and up DO NOT have the three button combo but mine is a build 1012.... Any thoughts?
Sent from my SGH-I897 using Tapatalk 2

My freezes to on shut down I have no power button so I don't know what to do and when I take battery out and put it back in to charge it turns all way on it don't stay shut down
Sent from my SGH-I897 using xda premium

Have any of you used a captivate connected to WiFi and without a SIM card as a WiFi hotspot to extend range of router?
Sent from my SAMSUNG-SGH-I727 using Tapatalk

drewfs7270 said:
Have any of you used a captivate connected to WiFi and without a SIM card as a WiFi hotspot to extend range of router?
Sent from my SAMSUNG-SGH-I727 using Tapatalk
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Having a sim card or not in your android doesn't affect wifi at all. You can still use the internet.

Phone keeps randomly rebooting into a loop

I have my Galaxy Exhibit (II) 4G for about a year and two weeks now. Warranty period is just over. I used Stock ROM in the beginning and have been using CM10(.1) roms for about 10 months.
Yesterday early night I noticed my battery suddenly diminished about 60% in 15 mins. Then I had it in the charger later, and I think I let it fall one time, like that happens sometimes. Since then my phone has been randomly rebooting and then looping either the battery sign or the Samsung sign.
Usually I can get it to boot up again with holding the power button, but sometimes I just keep pressing everything until something happens.
I can get into recovery. I tried wiping everything. I have tried deleting battery stats. I have tried other (non-oc) ROMs.
NOTE that sometimes it happens in recovery mode too, usually right as it is getting into it, so it might be totally non software related.
Do you guys think my phone is broken? Or is it worth trying to buy a new battery?

Turns out the phone thinks its on/off button sometimes is pressed, so it keeps rebooting. If I press it a couple times it's over. But then then next time there's always like a 50% chance that it gets stuck again...

Did you solve your problem because am facing the same problem. I can't even make it far enough to boot into recovery
Sent from my Nexus 7 using xda app-developers app

I'm stuck in the same problem, first I thought it was a physical problem but I had to get technical assistance of an expert and he confirms its rom problem. he's going to install stock again via some freaking hardware because with my pc I couldn't. Any suggestions?
Enviado desde mi GT-I9100 mediante Tapatalk

Defintly this guy couldn´t fix it, he reinstall the previous t-mobile original firmware and nothing happens, still rebooting. Another technician check it and told me he must replace a bootloader IC, I hope it works.

Now the "new technician" couldn´t fix the phone. He told my wife that previous Rom (cyanogenmod unofficial)"must have a virus and it infected the boot". I keep thinking is a hardware malfunction. Any suggestions?

If you got the ROM from xda I doubt it had a virus. Have you tried Odin back to stock yet. If not try that first.
Sent from my SGH-T679 using xda app-developers app

I dubted too, the problem is it can´t boot. I have the samsung logo, then it apears the Exhibit logo and shuts down, it keeps like that again and again. I managed to get download mode but the same, 3 sec after it shuts down so i can´t install anything.

Then ya i would have to agree that the device is defective.
Sent from my SGH-T679 using xda app-developers app

I had the same problem and i use to solve it by hitting the phone from the back and after i let it fall accidently it back to normal

I have the SAME problem!!!
ok so, my phone was awesome but since this is vacation time I decided to try a new rom, It was fine but then it started rebooting all the time. HOWEVER, I was able to try other roms after several attempts and think it's related to the calibration of the power button. It tries to stay awake but when I try and press the power button, that's when the problems start. Does anybody know of a way to calibrate the power button? I think that would be the solution, in case that's even possible. If not I'll have to buy a dumbphone for I don't have the money to spare on a new phone just now...

I had something similar happen this weekend. This may not apply to everyone, but I found that after pressing the power button over the course of two years the thin plastic "arms" that hold the power button inside the case have become stretched and weakened. Went back to stock to eliminate every conceivable variable. It would continue to reboot even without touching it, with or without a case. Essentially, the power button is resting against the motherboard's power module, or rather stuck and wreaking random havoc.
I fixed it and haven't had a reboot this week by using tweezers and squeezing the posts that hold the power button arms in place tightly against the outer shell. The objective is to create as much resistance as possible and have the power button spring away from the mobo. The power button has rubber pads that, when pressed, pushes against the mobo power module, so to create more distance I filed down the pads a few mm's. If it happens again I will resolder the points and remap the keys, until then I went ahead and cleaned the solder points with a q-tip and rubbing alcohol.
Removing the outer shell takes some time to break the glue apart without damaging anything, so take that into consideration and move at insect speed if anyone considers this approach for the first time. The best reference I can spot is at http://www.youtube.com/watch?v=I3dAOv2Oke0&t=6m11s where the power button is on the right hand side of his right hand. I'll try taking photos or video if it happens again.

I'll try this
jfbs said:
I had something similar happen this weekend. This may not apply to everyone, but I found that after pressing the power button over the course of two years the thin plastic "arms" that hold the power button inside the case have become stretched and weakened. Went back to stock to eliminate every conceivable variable. It would continue to reboot even without touching it, with or without a case. Essentially, the power button is resting against the motherboard's power module, or rather stuck and wreaking random havoc.
I fixed it and haven't had a reboot this week by using tweezers and squeezing the posts that hold the power button arms in place tightly against the outer shell. The objective is to create as much resistance as possible and have the power button spring away from the mobo. The power button has rubber pads that, when pressed, pushes against the mobo power module, so to create more distance I filed down the pads a few mm's. If it happens again I will resolder the points and remap the keys, until then I went ahead and cleaned the solder points with a q-tip and rubbing alcohol.
Removing the outer shell takes some time to break the glue apart without damaging anything, so take that into consideration and move at insect speed if anyone considers this approach for the first time. The best reference I can spot is at http://www.youtube.com/watch?v=I3dAOv2Oke0&t=6m11s where the power button is on the right hand side of his right hand. I'll try taking photos or video if it happens again.
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Click to collapse
Again, all your symptoms are identical to mine so I'll try this and update on it ASAP. Thanks for the help!!!

[Q] Turn phone on without a Power Button.

Hi, My LG P880 has a broken power button. I got around the use of it via the Gravity Unlock app but recently my phone died due to low battery.
I tried to plug in, take battery out and put it back in.
I tried plugin it in without the battery.
I tried plugin it in with battery and then take the cable out once it display.
All three ends up with the battery charging indicator after the LG logo and then turn off.
I need some help as I am hoping to hold onto this phone till my contract status is available for a change in handset.
Any help is appreciated.
PS: My phone is unrooted and without any modifications etc.

If your battery isn't holding charge buy a new one no?

Rudjgaard said:
If your battery isn't holding charge buy a new one no?
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Click to collapse
I think the problem here is not the battery She needs a way to turn on her phone without having to use the power button.
OP, what about warranty?
Sent from my LG-P880 using xda app-developers app

Without modifications there's no way I think. Adb needs drivers and Dev settings set properly to turn on the device from a connected PC.
I would also suggest to go for warranty if you're able to.
Sent from my LG-P880 using XDA Premium 4 mobile app

Thanks
Thanks for the reply, though it does not solve my problem, it is still very much appreciated.
It's is not the battery, since it is detected when plugging in the charger. It is even at full charge.
Warranty wise, It is kinda expired since I am on a 2 year contract plan with my telecom which ends this August and I am sure that the warranty is only for the first year.
The phone still can't be turned on after more futile attempts and I had to resort to using a backup phone that has no data capabilities.. sigh.
Will consider sending it to a repair shop once I get enough funds though and again, thanks for the help!

What exactly is wrong with your power button? Perhaps you could try removing it and use something thin to push the actual button underneath it?
Sent from my Nexus 7 using xda app-developers app

balloon27 said:
What exactly is wrong with your power button? Perhaps you could try removing it and use something thin to push the actual button underneath it?
Sent from my Nexus 7 using xda app-developers app
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In my opinion don't touch your phones hardware parts don't even think about disasembly.... just take it to some repair shop if its out of warranty fixing the button probably will cost you 15-25E How much could replacing some tiniy button cost :fingers-crossed:

that thread is quite old though, but I found an easy solution. Maybe it helps someone out there...
you need some skills with electronics or at least with small parts and screws and I am not responsible if you damage your phone.
But anyway, your Phone doesn't work anymore and there is no warranty anymore, so why don't you just try it.
There are youtube videos how to disassemble it. but just when you got rid of the back cover and the electonics is uncovered, you need to pull out the flex cable that leads to the power button. Pull it out gently (it's not glued) and check it out. in my case there wasn't any visible damage and it still clicked as if it was working (but it wasn't).
Well, that click-thing in the end of that cable can be devided into two parts such as the contacts (on the cable) and a bowed piece of metal that is taped on them and supposed to make a contact beween these two contacts when you press it. I separated these two parts and cleaned it with an alcohol pad, afterwards I just put it back together without any aditional glue. Make sure it clicks again as before, also when you put it back in place and close your phone again.
Make sure, you do have a working battery. if your phone died half a year ago because it ran out of battery, and you didn't charge it again, the battery might be completely empty and therefore dead.
hope that someone can make use of my simple howto. Greets

Boot loop, no screen after replacing screen

SO i replaced my screen one week prior to today. I had accidentally broken the power button, but until i got a new one I plugged in the phone and the screen worked and showed the charging icon.
But now this weekend that Ive replaced the power button, all my phone does is vibrate then reboot, and vibrate, reboot, over and over.
Anyone know what I can do? There is nothing done to the phone software wise. 100% stock from factory.

Sounds like the power button is stuck. That's exactly what it will do if you hold the power button down constantly.

Darth said:
Sounds like the power button is stuck. That's exactly what it will do if you hold the power button down constantly.
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It happens even with the power button disconnected, and even with that whole section of the ribbon cable disconnected from the board
anything I can do about that?

I'm no hardware guru... But something is obviously damaged or just not right.

Thanks for the help so far.
Anyone else know what may be the issue? I thought it might be that the battery was completely drained so i was contemplating buying another battery.

21q said:
Thanks for the help so far.
Anyone else know what may be the issue? I thought it might be that the battery was completely drained so i was contemplating buying another battery.
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Click to collapse
Did you ever figure out what was wrong with your Moto X? I just finished replacing the screen on one and it has the same symptoms (black screen, boot loop noted by repeated vibration).

PopeXXIII said:
Did you ever figure out what was wrong with your Moto X? I just finished replacing the screen on one and it has the same symptoms (black screen, boot loop noted by repeated vibration).
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Yes!! It was the copper film that goes over the chip on the screens larger ribbion cable. It was causing a short. I removed and just placed electrical tape. Good as new.

21q said:
Yes!! It was the copper film that goes over the chip on the screens larger ribbion cable. It was causing a short. I removed and just placed electrical tape. Good as new.
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Interesting. I'll have to check that out later tonight. I think I remember that copper foil looking a little mangled. It could very well be touching something it should not be. Thanks for the tip!