Yo folks,
My bro's PLAY is on 2.3.3 [the latest update available here] which I had updated via SEUS. Today, after gaming a bit my bro told me that the battery dropped to 13% from well over 60-70%. Also, the phone was pretty hot...
I pulled the battery out and let it sit for over an hour. I then plugged in the battery, and now the Phone won't start - it just shows the blinking RED Led. Nothing on screen whatsoever. I don't think it's powering on at all.
Any idea what to do next, i'm pretty stumped
p.s. Phone is on stock firmware, unrooted.
well u could try another battery in there if thats possible
the xperia x10 has the same battery
so if u cant find some one with the same phone
u can use one of those
crispyduckling said:
well u could try another battery in there if thats possible
the xperia x10 has the same battery
so i u cant find some one with the same phone
Click to expand...
Click to collapse
Thanks.. I actually have a X10 myself, but it's with my bro atm.. and i've come at another place earlier today for a couple of days with his PLAY.
I've plugged it in and it's still showing the blinking RED led. I'll wait and see what happens..
AFAIK the blinking red Light indicates the Battery is completley drained and does not have enought juice to turn the device on .. let it charge up a bit and see if it turns over.. then give the device a FULL charge .
Gonzo__ said:
AFAIK the blinking red Light indicates the Battery is completley drained and does not have enought juice to turn the device on .. let it charge up a bit and see if it turns over.. then give the device a FULL charge .
Click to expand...
Click to collapse
Yeah... I have it hooked up to a charger for 2 hours now, still only blinking red led and not powering up.
Does it take that long?
try holding the power button down for like 15 seconds through multiple blinking red lights
typikal82 said:
try holding the power button down for like 15 seconds through multiple blinking red lights
Click to expand...
Click to collapse
Thanks.. did that now, but nothing happened - phone did not start up.
It's been hooked up to the wall charger for a little more than 2.5 hours now. Still only the steadily blinking red LED [led blinks every 5 seconds].
Any ideas? I'm starting to get worried
There is still warranty on it?
Sent from my XPlay using XDA App.
Deoxlar said:
There is still warranty on it?
Sent from my XPlay using XDA App.
Click to expand...
Click to collapse
Yeah, my bro bought it like 3 months ago.
Only suggestion I have left is to take it to where you bought it and get it replaced under warranty.
If it's from a carrier call them and ask for a replacement mailed to you while it's being fixed cuz you don't want to use a different phone model.
Sent from my XPlay using XDA App.
Never mind
Regards Dousan...
Okay guys, I came back home, and charged the PLAY's battery upto 50% in my X10. So the PLAY now boots up & I also hooked it up to my machine and did a re-install of the 2.3.3 update. Now it's back to original state, with only the market logged in and my bro's contacts restored from SDcard.
However, it still does not charge as normal. It actually is DISCHARGING, instead of charging up when connected to the wall charger. And it still gets hot
Could it be a hardware fault?
did you try the x10 battery in the Play?
subcu1ture said:
did you try the x10 battery in the Play?
Click to expand...
Click to collapse
Yeah, with my X10's battery the PLAY booted up fine - but it was still getting very hot.
I had taken it to the dealer earlier today, but unfortunately the Sony Ericsson service center we have in my city was closed today because nobody showed up there due to heavy rains.
I have to go back there tomorrow... let's see.
Wish I could not show up to work because of rain
Try a different charger.
speedyink said:
Wish I could not show up to work because of rain
Click to expand...
Click to collapse
Haha, I've had days I've felt that way too
sdlaurin said:
Try a different charger.
Click to expand...
Click to collapse
Well, the phone is at the service centre atm and they have kept the phone + charger [without battery tho].
They're going to reflash it n ****... I have to go back in a few hours to check the status.. wish me luck
Update : It is a hardware fault and I'm getting a replacement in 10-15 days. The service center asked me to leave the phone there and gave me a job sheet. The replacement phone will be sent to the dealer and i'll need to pick it up from him.
Related
Hi, yesterday I installed CM7 on my android, all went well, very awesome.
Soon the LED Light messed up when I would plug the phone in via usb.
The LED had colors that were like mixed and all.
Searched on Google, and found nothing... So I then did the whole process over (wiped data...) And near the last step I wiped data instead of wiping cache.
It was like 5 in the am and I got sleepy so when I restarted the phone(Of course it would take a while), I went to lie down, then fell asleep. Woke up and my phone was still at the Motorola Logo screen. I also seen that I forgot to put it on the charger before went to sleep.
Long story short, My phone won't get past the logo screen, I would try to go back to 2.2 sbf but when I get into the bootloader screen the battery low cannot program.. error comes up.
Yeah, I explained practically everything..
What can I do to get it back to normal, so I can get CM7 back?
I only got to enjoy 20 minutes of the rom...
My phone: Motorola Bravo
Service: AT&T
You need to charge your battery some how? Does it charge at all
Do you know someone with phone?
If not ask for a battery replacement from at&t store and hope it has enough charge
Sent from my MB525 using XDA App
rdannar said:
You need to charge your battery some how? Does it charge at all
Do you know someone with phone?
If not ask for a battery replacement from at&t store and hope it has enough charge
Sent from my MB525 using XDA App
Click to expand...
Click to collapse
My thought on charging was when the phone is off and you charge it, it goes to the charging screen, then eventually the display turns off.
Instead of that, it just stays at the Motorola Logo screen..
I've also had it on the charger for about 4 hours now. Still remaining at the logo screen, BUT it has also gotten warm..Maybe that means its charging? (right??)
2. Since I've moved, nope. Don't know anyone that has this phone and is near me.
3. Battery Replacement. It's 1am here so, I guess I'll just keep it on the charge till the morningmorning..
I could do the bootloader sbf back to froyo thing but since the phone's battery is dead to the max, I get the error, meaning I can't do that option.
I'll call my local AT&T store to see if I could get a battery replacement if I can't get it to turn on to at least the Recovery or bootloader.
Pain.. pain in my brain.
try to get it plugged in w/ no logo, to ensure it's off off... if not you might have to let it sit off the charger till it's dead enough that it doesn't try to boot...
i think it's trying to boot, but boot looping and not aquiring enough of a charge,
do you have it on a wall charger? make sure it's like 800 mah or higher, i think the phone comes with a 5.1v 800mah which was weird to me tha tit was 5.1 cause all other phones are 5.0 but anyway maybe you're not getting enough of a current to it to overcome the drain from the bootloop?
Are you able to get into custom recovery? (Do you see the blue LED at any point when the phone begins to try to power on?)
You have soft bricked your phone, so the only way to get it working is to sbf back to 2.2. The problem is, the bootloader doesn't allow you to sbf if your battery is below a certain point. You need to either get that battery charged or get a new one.
If you can't get anything at your store, I will cross-ship/trade you a charged battery (1 year old) for your current one and $3 for shipping? Let me know if you'd be interested in something like that...
I also bought a battery from Amazon (OEMShop or something), and I think it came 40%ish charged... You could try your luck?
Just so you understand the charging, Android uses the OS to monitor the charging. If the phone is bricked it doesn't charge… plain and simple. It sucks if you try to sbf after the battery is drained, but the only thing you can do is get another one. Hope your search for one comes up well.
Sent from my MB525 using XDA App
dontbejeff said:
Just so you understand the charging, Android uses the OS to monitor the charging. If the phone is bricked it doesn't charge… plain and simple. It sucks if you try to sbf after the battery is drained, but the only thing you can do is get another one. Hope your search for one comes up well.
Sent from my MB525 using XDA App
Click to expand...
Click to collapse
Yeah..no.. I'll be getting a replacement phone (same one). Basically in 4 to 6 days..
I'm so happy, my phone kept restarting anyway when using data.. But yeah, thanks though.
Before you send other phone back... sbf with other battery back to stock.
AndroidRocksSocks said:
Yeah..no.. I'll be getting a replacement phone (same one). Basically in 4 to 6 days..
I'm so happy, my phone kept restarting anyway when using data.. But yeah, thanks though.
Click to expand...
Click to collapse
Sent from my MB525 using XDA App
rdannar said:
Before you send other phone back... sbf with other battery back to stock.
Sent from my MB525 using XDA App
Click to expand...
Click to collapse
Yeah, I thought of that when I got of the phone with them. Thanks for the heads up though!
My replacement phone came in the mail earlier this afternoon! Thanks for all the help you guys. Glad I came here. So excited, just 10% more and it's fully charged.
I think I may get a extra battery just in case for my phone. Great post!
This just happened to me too. I thought what to do...
Spliced one of my old car phone chargers and hooked it to my phone battery... plugged it into my car fir 5 minutes and was charged enough to sbf.
Don't recommend it if you don't know what your doing
Cheers
Sent from my MB525 using XDA App
rubbachicken said:
try to get it plugged in w/ no logo, to ensure it's off off... if not you might have to let it sit off the charger till it's dead enough that it doesn't try to boot...
i think it's trying to boot, but boot looping and not aquiring enough of a charge,
do you have it on a wall charger? make sure it's like 800 mah or higher, i think the phone comes with a 5.1v 800mah which was weird to me tha tit was 5.1 cause all other phones are 5.0 but anyway maybe you're not getting enough of a current to it to overcome the drain from the bootloop?
Are you able to get into custom recovery? (Do you see the blue LED at any point when the phone begins to try to power on?)
Click to expand...
Click to collapse
Volume up... not down... got it
Hi. I loved this phone till today.
My phone died while working, went home to charge it..and it wont charge, plug it in to several different outlets nothing works. No lights, nothing..
Any suggestions?
See this thread and good luck.
http://forum.xda-developers.com/showthread.php?t=2013977
Sent from my Nexus 4 using xda app-developers app
chelsierae said:
Hi. I loved this phone till today.
My phone died while working, went home to charge it..and it wont charge, plug it in to several different outlets nothing works. No lights, nothing..
Any suggestions?
Click to expand...
Click to collapse
Where you running Faux's kernel?
Can you hold down the Vol +/- and then plug in your USB cable? If it is a red blinking light then I think it's a battery issue not supplying power to your motherboard.
elliot.newnham said:
Where you running Faux's kernel?
Can you hold down the Vol +/- and then plug in your USB cable? If it is a red blinking light then I think it's a battery issue not supplying power to your motherboard.
Click to expand...
Click to collapse
I dont even know what Fauz's Kernel is... I tired that and I still get nothing
chelsierae said:
I dont even know what Fauz's Kernel is... I tired that and I still get nothing
Click to expand...
Click to collapse
I believe it is the phone, not the charger. Grabbed my old phone that uses the same charger, and it charges that phone instantly..Not very happy with the Google Nexus 4
chelsierae said:
I believe it is the phone, not the charger. Grabbed my old phone that uses the same charger, and it charges that phone instantly..Not very happy with the Google Nexus 4
Click to expand...
Click to collapse
This happened to me today. The battery indicator is incorrect, and shuts down before notifying you sometimes.
Phone shut down on me randomly and wouldn't turn back on today. Plugging into the wall didn't help. It was only when I plugged it into my PC and let it charge for 5 minutes that it came back. Scary bug.
chelsierae said:
I dont even know what Fauz's Kernel is... I tired that and I still get nothing
Click to expand...
Click to collapse
No need to type in bold...
Faux is a developer who is putting together a new kernel for our device, basically it allows one to modify the 'engine' of our phone.
I think the consensus here is there is a manufacturing defect in your phone and a lot of other phones. It seems like this issue is connected to running a custom kernel but there are reports of 100% stock phone bricking (like yours)
It's time to call up google, nothing we can do from here.
elliot.newnham said:
No need to type in bold...
Faux is a developer who is putting together a new kernel for our device, basically it allows one to modify the 'engine' of our phone.
I think the consensus here is there is a manufacturing defect in your phone and a lot of other phones. It seems like this issue is connected to running a custom kernel but there are reports of 100% stock phone bricking (like yours)
It's time to call up google, nothing we can do from here.
Click to expand...
Click to collapse
I thanked you on accident, you didn't deserve it. There is no evidence that his phone is bricked, a user above reported the same thing happening and how he resolved it.
Also, he can type in bold if he wants to.
I hope the OP issue gets resolved. Wish you all the best buddy!
I'm having the same issue. Except this happened when I pulled the device new out of the box. Can't even get it to stay on long enough to get into bootloader mode. :-/ RMA time
Good luck on fixing the problem.
Sent from my Nexus 4 using Tapatalk 2
So about a week or two ago my phone randomly shut itself off. I'm not sure exactly what happened but I just locked it and slid it in my pocket and an hour or so later I checked it and it wouldn't turn on, yet I could feel the gpu/processor getting extremely hot after a minute or so of failed attempts. Also the trackpad would flash red, which I had never noticed before. Prior to this I had been noticing my battery was draining quicker.
So when I try to charge it will charge itself for approximately a minute or so and then the orange LED will go out, again the processor/gpu gets very hot. After about an hour if I come back the phone will feel cold again as if It had been off and the phone won't turn on. I was able to buy a new battery today, because I read it could be related to a dead battery. This new battery boots to the familiar HTC mytouch4g intro (which is good, considering the old battery doesn't even power on), but then will shut off immediately after that or occasionally just get stuck at that screen. I can boot into recovery but then it says low battery voltage. I tried to do a factory reset but it just takes me back to the bootscreen again and shuts off.
I'm not sure what to do, as I've bricked a previous phone before and this doesn't really seem similar. I'm thinking about leaving the phone on charge, even though the orange LED is off with the hopes that it will charge. Anyone else have similar experience to this?
You tried different chargers?
estallings15 said:
You tried different chargers?
Click to expand...
Click to collapse
Yeah, like 4 or 5 different mini usb's.
Can you get into the bootloader?
estallings15 said:
Can you get into the bootloader?
Click to expand...
Click to collapse
Yes, by holding down on the volume and the power button right? Almost every option leads back to the phone rebooting.
greeny996 said:
Yes, by holding down on the volume and the power button right? Almost every option leads back to the phone rebooting.
Click to expand...
Click to collapse
Try installing PD15IMG.zip.
estallings15 said:
Try installing PD15IMG.zip.
Click to expand...
Click to collapse
Sorry about the long response time. Unfortunately now my phone will not turn on with either battery, so I couldn't flash the img. I think it could be possible that my phone is not actually charging the battery and both of them have died. I'm not entirely sure, I'm going to charge it overnight and hope for the best.
greeny996 said:
Sorry about the long response time. Unfortunately now my phone will not turn on with either battery, so I couldn't flash the img. I think it could be possible that my phone is not actually charging the battery and both of them have died. I'm not entirely sure, I'm going to charge it overnight and hope for the best.
Click to expand...
Click to collapse
Perhaps your USB port is broken
Sent from my GT-I9300 using xda premium
bas3balman said:
Perhaps your USB port is broken
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
I doubt it, my phone will charge off the USB for a minute or so when I plug it in.
Hey xda'ers my nexus 4 just crapped out with the flashing red light of death. I've read it's just a dead battery and I should let it charge overnight. My situation was I am currently using slim bean 4.3 and was flashing between kernels, went from faux to semaphore to hells core and on hells I ran antutu and after that my phone went into a coma. I had a full battery when flashing so I'm at a loss as to why the flashing indicates a deader than dead battery. Any help appreciated.
Sent from my SGH-I897 using xda app-developers app
BxingFetus said:
Hey xda'ers my nexus 4 just crapped out with the flashing red light of death. I've read it's just a dead battery and I should let it charge overnight. My situation was I am currently using slim bean 4.3 and was flashing between kernels, went from faux to semaphore to hells core and on hells I ran antutu and after that my phone went into a coma. I had a full battery when flashing so I'm at a loss as to why the flashing indicates a deader than dead battery. Any help appreciated.
Sent from my SGH-I897 using xda app-developers app
Click to expand...
Click to collapse
Try this before anything else:
Plug in the factory charger to the wall and to your device for 1 minute. Wait to see if a battery charging symbol appears on screen. If it does then press and hold the power button for at least 15 seconds. If the aforementioned battery icon doesn't appear then plug your device in again but this time for one hour. After one hour of charging disconnect the cable then quickly reconnect it after waiting one second. Press and hold the power button for 15 seconds. The device should power on, if not repeat the last sequence of steps but substitute the one hour of charging with 10hrs of charging (overnight).
I hope it works for you, Report back and give an update!
jamel_tza said:
Try this before anything else:
Plug in the factory charger to the wall and to your device for 1 minute. Wait to see if a battery charging symbol appears on screen. If it does then press and hold the power button for at least 15 seconds. If the aforementioned battery icon doesn't appear then plug your device in again but this time for one hour. After one hour of charging disconnect the cable then quickly reconnect it after waiting one second. Press and hold the power button for 15 seconds. The device should power on, if not repeat the last sequence of steps but substitute the one hour of charging with 10hrs of charging (overnight).
I hope it works for you, Report back and give an update!
Click to expand...
Click to collapse
Thanks dude I'll give it a try. I did see the battery icon with the charge symbol in it for a second when I plugged it in. I'll follow your steps and see where that gets me. And really, can the battery suddenly just drain like that? I mean I had 98% or more. I think I have a haunted phone. Thanks again.
Sent from a slim Cappy
Edit: ok just tried powering it on and I got to the Google boot screen then death again. I'll let it sit overnight then try again. Thanks for the guidance Sir.
BxingFetus said:
Thanks dude I'll give it a try. I did see the battery icon with the charge symbol in it for a second when I plugged it in. I'll follow your steps and see where that gets me. And really, can the battery suddenly just drain like that? I mean I had 98% or more. I think I have a haunted phone. Thanks again.
Sent from a slim Cappy
Edit: ok just tried powering it on and I got to the Google boot screen then death again. I'll let it sit overnight then try again. Thanks for the guidance Sir.
Click to expand...
Click to collapse
While its very strange and very uncommon, it can happen. It could be the result of something seemingly unrelated too, its hard to say. I've had it happen to me once with another device. Good luck with the charging though! I'm more than happy to help
same here
i flashed slim bean 4.3 and then hell core kernel .i had 90% battery and run antutu .then my phone turned off and a red light blinked ..i put the phone to charge and then press power and volume button and it boot for some secs with 0% battery .then i tried to go to recovery but after the shut down is dead . after that no red light ..
what i can do?
johnagelo said:
i flashed slim bean 4.3 and then hell core kernel .i had 90% battery and run antutu .then my phone turned off and a red light blinked ..i put the phone to charge and then press power and volume button and it boot for some secs with 0% battery .then i tried to go to recovery but after the shut down is dead . after that no red light ..
what i can do?
Click to expand...
Click to collapse
Can you go into download mode?
Simonna said:
Can you go into download mode?
Click to expand...
Click to collapse
i pressed the three buttons together but nothing..
johnagelo said:
i pressed the three buttons together but nothing..
Click to expand...
Click to collapse
If it's boots up with 0% battery I think that you should try to use another battery and to see if it was a battery problem.
johnagelo said:
i flashed slim bean 4.3 and then hell core kernel .i had 90% battery and run antutu .then my phone turned off and a red light blinked ..i put the phone to charge and then press power and volume button and it boot for some secs with 0% battery .then i tried to go to recovery but after the shut down is dead . after that no red light ..
what i can do?
Click to expand...
Click to collapse
see my above post, try it and see if it helps. Either way report back. I'm sure we can get this problem resolved.
---------- Post added at 12:29 PM ---------- Previous post was at 12:28 PM ----------
Simonna said:
If it's boots up with 0% battery I think that you should try to use another battery and to see if it was a battery problem.
Click to expand...
Click to collapse
...
The Nexus 4 battery isn't removable...
The Nexus 4 battery isn't removable..
Click to expand...
Click to collapse
Oops..Yes my bad, so take it to service center and tell them to change your battery.
Well I let it sit overnight charging and the red light still flashing. I can get the phone to Google boot screen then nothing. Screen goes black and back to the flashing. I can't get onto fastboot mode or recovery mode to flash to stock no button combos work. So I guess either I send it back to LG or maybe send it to josh(conexxion2005 on xda) and see if he can help. Thanks guys for all the help guys but I think I'm dead in the water. I do have a tiny T6 torx for my Oakley sunglasses I think will work on the phone I'm tempted to take it apart myself to look at things.
Sent from a slim Cappy
The last thing you can do [and the only which fix this kind of problem] is turn off device, open the back case [2 screws], remove the battery flex cable and put it back.
Now try...before you RMA it.
PsyOr said:
The last thing you can do [and the only which fix this kind of problem] is turn off device, open the back case [2 screws], remove the battery flex cable and put it back.
Now try...before you RMA it.
Click to expand...
Click to collapse
I'm gonna try that but now I just realised that my T6 torx isn't small enough to get the screw's out. I'll take it to work and try to mess with it there. Seeing as my device is rooted and various other they'll surely not warranty it. But I'll try not to @#$% it up any further.
Sent from a slim Cappy
Hallelujah!! My phone lives! I took the thing apart and took of the battery connector and placed it back and wham!! Back in business! Thanks guys for all your help.
Sent from my Nexus 4 using xda app-developers app
I wouldnt worry about rooting etc with regard to warranty. You can return in to stock in about 5 minutes with fastboot
pepdavies said:
I wouldnt worry about rooting etc with regard to warranty. You can return in to stock in about 5 minutes with fastboot
Click to expand...
Click to collapse
Correct, but if I can't enter fastboot mode or recovery doesn't that limit my options to returning to stock?
Sent from my Nexus 4 using xda app-developers app
Sorry, I wasn't reading properly
Sent from my Nexus 4
BxingFetus said:
Thanks dude I'll give it a try. I did see the battery icon with the charge symbol in it for a second when I plugged it in. I'll follow your steps and see where that gets me. And really, can the battery suddenly just drain like that? I mean I had 98% or more. I think I have a haunted phone. Thanks again.
Sent from a slim Cappy
Edit: ok just tried powering it on and I got to the Google boot screen then death again. I'll let it sit overnight then try again. Thanks for the guidance Sir.
Click to expand...
Click to collapse
From what I understand, as the battery is well- cheap and crap if you run a benchmark and the system draws a lot of power it can knock itself out due to the voltages or something.
PsyOr said:
The last thing you can do [and the only which fix this kind of problem] is turn off device, open the back case [2 screws], remove the battery flex cable and put it back.
Now try...before you RMA it.
Click to expand...
Click to collapse
That just save may day (and phone) :good:
Phone actually working without battery???
Okay this is weird... I am new to this Android developing stuff so cut me some slack...
I just took out the battery to restart quickly, but it stayed on... I made sure the battery was far enough away from the device to not be using any sort of black magic. I left it for a while and eventually I just put it back in and rebooted through the menu. What was happening? Draining from the RAM to keep the display on? Some sort of solar panel? I am confused!
Remember to unplug the phone from charger cable...
I would vote for black magic but it's probably just a anomaly . My 910F as soon as i unplug the battery will go bye bye in 0.5 sec ! )
Zionator said:
Remember to unplug the phone from charger cable...
Click to expand...
Click to collapse
So laptops can act as battery packs in emergencies... good to know!
MightyAlex200 said:
Okay this is weird... I am new to this Android developing stuff so cut me some slack...
I just took out the battery to restart quickly, but it stayed on... I made sure the battery was far enough away from the device to not be using any sort of black magic. I left it for a while and eventually I just put it back in and rebooted through the menu. What was happening? Draining from the RAM to keep the display on? Some sort of solar panel? I am confused!
Click to expand...
Click to collapse
r u sure connected to computer or other appliance?
LOL
This is rather stupid
MightyAlex200 said:
Okay this is weird... I am new to this Android developing stuff so cut me some slack...
I just took out the battery to restart quickly, but it stayed on... I made sure the battery was far enough away from the device to not be using any sort of black magic. I left it for a while and eventually I just put it back in and rebooted through the menu. What was happening? Draining from the RAM to keep the display on? Some sort of solar panel? I am confused!
Click to expand...
Click to collapse
After you remove the battery, there is a little sticker on the phone where the battery slot is (it has the phone model number on it, as well as other information). Sometimes you need to flick the sticker with your finger a few times. This tells the Pikachus in the phone that the battery is out and they'll soon stop using Thunder Bolt.
Sent from my SAMSUNG-SM-N910A using Tapatalk
MightyAlex200 said:
Okay this is weird... I am new to this Android developing stuff so cut me some slack...
I just took out the battery to restart quickly, but it stayed on... I made sure the battery was far enough away from the device to not be using any sort of black magic. I left it for a while and eventually I just put it back in and rebooted through the menu. What was happening? Draining from the RAM to keep the display on? Some sort of solar panel? I am confused!
Click to expand...
Click to collapse
You can boot into recovery, clear cache and reboot.
inwithyou said:
This is rather stupid
Click to expand...
Click to collapse
Said the junior member to the other junior member who said he was new to Android developing
MightyAlex200 said:
So laptops can act as battery packs in emergencies... good to know!
Click to expand...
Click to collapse
Yes it's draws current from any power source connected to the phone. Some phones will shut off when battery is disconnected even tho a power cable is connected to protect hardware from shorting out and other phones won't.