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Volume button fault - Any other ways to go to bootloader?

Hello all,
my sensation's volume rocker is faulty. By pressing volume down and power on, it will not boot into boot loader thus cannot enter recovery.
I know i can use software to boot into it boot loader but what if I am getting bootloops and unable to boot into rom?
Any ADB commands to make the phone boot into bootloader straight?
I am planning to flash the factory RUU and go claim my warranty after i get my Galaxy nexus..

mgear356 said:
Hello all,
my sensation's volume rocker is faulty. By pressing volume down and power on, it will not boot into boot loader thus cannot enter recovery.
I know i can use software to boot into it boot loader but what if I am getting bootloops and unable to boot into rom?
Any ADB commands to make the phone boot into bootloader straight?
I am planning to flash the factory RUU and go claim my warranty after i get my Galaxy nexus..
Click to expand...
Click to collapse
adb reboot recovery
or
adb reboot bootloader
or plain old
adb reboot

wmoore said:
adb reboot recovery
or
adb reboot bootloader
or plain old
adb reboot
Click to expand...
Click to collapse
thansk for your reply bro. but can this work if i am stuck in a bootloop ( before entering any rom)?

mgear356 said:
thansk for your reply bro. but can this work if i am stuck in a bootloop ( before entering any rom)?
Click to expand...
Click to collapse
Possibly not unless your timing is amazing!
Are you stuck in bootloops now or is this hypothetical?

Please, tell if your volumne rocker is so broken that it cant even turn up/turn down volumne during normal use of phone?
If it's ok, thet I suggest method of booting into recovery which I use (and i had problems to boot before - thought it's vol. rocker):
1. press volume down button and hold it!
2. press power button for 2-3 seconds and then release, still holding the volumne down
3. phone boots into recovery after few seconds.
Hope it might help you.

Decado_PL said:
Please, tell if your volumne rocker is so broken that it cant even turn up/turn down volumne during normal use of phone?
If it's ok, thet I suggest method of booting into recovery which I use (and i had problems to boot before - thought it's vol. rocker):
1. press volume down button and hold it!
2. press power button for 2-3 seconds and then release, still holding the volumne down
3. phone boots into recovery after few seconds.
Hope it might help you.
Click to expand...
Click to collapse
Implying he can't control volume in a bootloop, I seriously hope this guy uses 4EXT touch, or else he needs to replace the rocker.
Can you flash zips from USB fastboot?
Sent from my HTC Sensation using Forum Runner

I understood that he can't enter recovery due to some volume button fault. When you stuck in bootloop only thing you can do is pull out the battery, no keys/buttons are usable - tested myself :/

wmoore said:
Possibly not unless your timing is amazing!
Are you stuck in bootloops now or is this hypothetical?
Click to expand...
Click to collapse
not really hypothetical.. in fact i experienced it earlier..
my volume up/down seems to have a mind of his own and at times i will enter "safe mode"
thereafter it will auto reboot unless i am quick enough to do a factory wipe under settings... it will still boot into safe mode but wont auto reboot.
so after knocking a few times on the volume rocker, i am able to boot into normal mode but the volume rocker isnt working. Pressing it once, will cause to decrease the volume and switch to silent mode.

Decado_PL said:
I understood that he can't enter recovery due to some volume button fault. When you stuck in bootloop only thing you can do is pull out the battery, no keys/buttons are usable - tested myself :/
Click to expand...
Click to collapse
lol this sux man..
I dunno if HTC singapore will honor the warranty cause this is a hardware defect and nothing to do with any rom or unlock..
Even in bootloader mode, press up will cause it to go down or at times up. pressing down may or may not respond.

If you in a boot loop adb should see it for split couple seconds so with the phone connected I would keep trying to do adb reboot recovery
Sent from my HTC Sensation using xda premium

Smokuevo said:
If you in a boot loop adb should see it for split couple seconds so with the phone connected I would keep trying to do adb reboot recovery
Sent from my HTC Sensation using xda premium
Click to expand...
Click to collapse
That's what I thought but it didn't happen when I tried it on mine.

From Fastboot, adb commands also work, provided vol - works while powering on. This sucks dude, sorry.
Sent from my HTC Sensation 4G XE with Beats Audio using xda premium

If you have CWM recovery installed (im not sure about other recoverys), you can connect your phone to your computer when it's off and you will have access to a limited adb provided by CWM. You can then use the command "adb reboot recovery" or "adb reboot bootloader" or whatever to do what you need to do.

Wipe all then cant boot into bootloader
Hi, i'm really sorry to bring back this post,
your fear had become my nightmare in reality.
The volume button was somehow (either physically spoil or is not capture click)
during booting process.
I have completely forgotten about it, and do complete wipe
(select wipe all except sdcard in touch recovery).
So, now the phone is completely clean (without rom)
and i'm unable to trigger bootloader/recovery via pwr/vol down button.
I have try take out battery,leave it for 10min and try press
all those button without casing/rocker;
press & hold vol down, den plug in battery;
and press both vol up & down then only pwr button.
The phone now (i assume) boot normally,
stop at HTC logo because there is no rom inside
(just like normal pc boot pass bios but cant find OS).
ironically, i live at singapore too... haha...
---------- Post added at 10:58 PM ---------- Previous post was at 10:51 PM ----------
I read somewhere that the person use pin to press the button really hard
and it manage to go into bootloader
(but I cant find back that post now)
Searching in forum recommend me to peel off the
volume button cover n use pin to press on it directly
(which I do not dare )
So now I sent it to repair shop,
hopefully that person using either g-box or gmbox
(flash box start with G) and can push RUU inside.
God bless me.
p/s : Sorry I should post in Q&A...

Get the phone off. Pull the battery and re-insert. Open fastboot
Fastboot reboot-bootloader
And if you want to flash a ruu directly:
Fastboot erase cache
Fastboot oem rebootRUU
And then flash the ruu
Sent from my HTC Sensation XE with Beats Audio Z715e using Tapatalk

dexter93 said:
Get the phone off. Pull the battery and re-insert. Open fastboot
Fastboot reboot-bootloader
Click to expand...
Click to collapse
Hi, can you tell me exactly step by step how to open fastboot?
pull out the battery, press vol down (??), reinsert?
fastboot devices go no response after booted and halt at htc logo.
Thank you very much.

Have you tried finding where the rocker lines up with the buttons on the phone, and just used the buttons without the back attached?
Sent from my Sensation using XDA

apow12348 said:
Hi, can you tell me exactly step by step how to open fastboot?
pull out the battery, press vol down (??), reinsert?
fastboot devices go no response after booted and halt at htc logo.
Thank you very much.
Click to expand...
Click to collapse
Did I tell you to power it on?
Just shut it down completely(hence battery pull ) and plug it in USB. Use google to get to know how to use fastboot and try with the commands I wrote above. simple as that
Sent from my HTC Sensation XE with Beats Audio Z715e using Tapatalk

Sensation-al! said:
Have you tried finding where the rocket lines up with the buttons on the phone, and just used the buttons without the back attached?
Click to expand...
Click to collapse
Yup, that is what I did all this while, and no success.
dexter93 said:
Did I tell you to power it on?
Just shut it down completely(hence battery pull ) and plug it in USB. Use google to get to know how to use fastboot and try with the commands I wrote above. simple as that
Click to expand...
Click to collapse
Sorry, I always thought that in order to use fastboot usb you must in bootloader already. Will try to search more. Thank in advance.

RECOVERY AND BOOTLOADER (ubislate 7 by datawind }
hi ,i have an old datawind tablet which runs on andorid froyo with kernel version 2.6.32.6 developer @developer#206
android version 2.2.2
model number NASHOBA NORDICA
can anybody please tell me how to enter bootloader in this particular version and also the rooting methods available
please note that this device lacks any physical volume up or down buttons as well as does not provide any adb support
this is a resistive touchscreen model
processor arm 11 366mhz
with conexant hd co processors
screen resolution 640*800
this device very easily overheats ]
battery lithium ion 2100 mah
i am also unable to play any vidoes on this device
ram 256
this device supports SD CARDS and full sized usb 2.0 ports
no hdmi output also
i any body can help me
please do as so
thanks in advance

[Q] recovery/bootloader (how to?) and trying to flash stock?

okay guys so surprisingly i havent seen anything on here about the button combo to get into bootloader on your one x (or recovery)
i think its just volume down and power ? but a lot of the time it just boots up like normal.
anything specific i can do to get it to work better?
also once i re lock my bootloader, there is no way for me to get the phone to boot up normally, like no matter what i do it just reboots into the bootloader what should i do?
(basically im trying to get from clean rom on 1.82.5 base , back to offical stock 1.73.5)

The_Zodiac said:
okay guys so surprisingly i havent seen anything on here about the button combo to get into bootloader on your one x (or recovery)
i think its just volume down and power ? but a lot of the time it just boots up like normal.
anything specific i can do to get it to work better?
also once i re lock my bootloader, there is no way for me to get the phone to boot up normally, like no matter what i do it just reboots into the bootloader what should i do?
(basically im trying to get from clean rom on 1.82.5 base , back to offical stock 1.73.5)
Click to expand...
Click to collapse
You have to hold vol down the entire time until it gets to the bootloader. Also, turn fastboot off.
Or you can always "adb reboot recovery" if you're at a computer

The_Zodiac said:
okay guys so surprisingly i havent seen anything on here about the button combo to get into bootloader on your one x (or recovery)
i think its just volume down and power ? but a lot of the time it just boots up like normal.
anything specific i can do to get it to work better?
also once i re lock my bootloader, there is no way for me to get the phone to boot up normally, like no matter what i do it just reboots into the bootloader what should i do?
(basically im trying to get from clean rom on 1.82.5 base , back to offical stock 1.73.5)
Click to expand...
Click to collapse
I've found that if you lock the bootloader while on a rom that uses an insecure boot.img like cleanrom does you'll see "security warning" on the bootloader screen and the phone won't boot to anything except the bootloader. It's ok though because you can install the ruu from there.

stnguyen09 said:
You have to hold vol down the entire time until it gets to the bootloader. Also, turn fastboot off.
Or you can always "adb reboot recovery" if you're at a computer
Click to expand...
Click to collapse
gunnyman said:
I've found that if you lock the bootloader while on a rom that uses an insecure boot.img like cleanrom does you'll see "security warning" on the bootloader screen and the phone won't boot to anything except the bootloader. It's ok though because you can install the ruu from there.
Click to expand...
Click to collapse
how do you disable fastboot? (or you mean while the phone is running normally in settings?)
i tried running the ruu from the bootloader and it wouldnt work though
is there a different rom i could flash, then be able to lock and flash back to stock 1.7?

The_Zodiac said:
how do you disable fastboot? (or you mean while the phone is running normally in settings?)
i tried running the ruu from the bootloader and it wouldnt work though
is there a different rom i could flash, then be able to lock and flash back to stock 1.7?
Click to expand...
Click to collapse
from the bootloader screen choose fastboot and you should be able to install the RUU

This method of getting into the bootloader always works for me.
It involves counting so read it through first as you need to act quickly:
Hold down the power button untill you see the capacitive buttons start flashing.
After a few seconds they will stop flashing.
Hold the volume down button immediately.
Then hold the power button for around 3 seconds and release it, while still holding the volume up button.
Hold it until you boot into the bootloader screen.

rohan32 said:
This method of getting into the bootloader always works for me.
It involves counting so read it through first as you need to act quickly:
Hold down the power button untill you see the capacitive buttons start flashing.
After a few seconds they will stop flashing.
Hold the volume down button immediately.
Then hold the power button for around 3 seconds and release it, while still holding the volume up button.
Hold it until you boot into the bootloader screen.
Click to expand...
Click to collapse
ill have to give this a shot, at what point do you start holding the volume up button?

[Q] easiest way to boot into bootloader/recovery

okay guys looking for the easiest way to boot into recovery / bootloader
would prefer both physical on the phone and adb commands
if you would be so kind

Volume down+power = BOOTLOADER
adb commands are the same across nearly every device
adb reboot recovery
adb reboot bootloader

Pirateghost said:
Volume down+power = BOOTLOADER
adb commands are the same across nearly every device
adb reboot recovery
adb reboot bootloader
Click to expand...
Click to collapse
thanks, i never had to use adb with my captivate or infuse so i figured i would ask .
also for some reason sometimes volume down +power wont work to get me into the bootloader.

I use Quickboot...it has many reboot options, including reboot into Bootloader and Reboot into Recovery.

Another simple way is to pick restart from the power menu then just hold volume down as the phone restarts.
Sent from my HTC One X using Tapatalk 2

The_Zodiac said:
thanks, i never had to use adb with my captivate or infuse so i figured i would ask .
also for some reason sometimes volume down +power wont work to get me into the bootloader.
Click to expand...
Click to collapse
You have to hold volume down the entire time until it gets to the bootloader. On the Captivate you could release it as soon as the splash screen came up but on this HOX you have to continue holding.

The_Zodiac said:
also for some reason sometimes volume down +power wont work to get me into the bootloader.
Click to expand...
Click to collapse
If the phone is powered off when you want to go into bootloader, you have to make sure "Fast boot" in Settings>Power is unchecked.
Going into bootloader using power+vol down requries the phone to be fully powered off or a reboot. Fast boot is actually just a deep sleep mode and not a full power down.
---------- Post added at 10:42 AM ---------- Previous post was at 10:37 AM ----------
BBock9 said:
Another simple way is to pick restart from the power menu then just hold volume down as the phone restarts.
Click to expand...
Click to collapse
That method never seems to work for me. Holding the vol down immediately after selecting restart, or even holding the vol down while picking restart, it just boots normally.
I have to power down (with fast boot unselected in Settings>Power) then hold vol down while pressing power button, in order to get to bootloader.

Pirateghost said:
Volume down+power = BOOTLOADER
adb commands are the same across nearly every device
adb reboot recovery
adb reboot bootloader
Click to expand...
Click to collapse
I am trying to boot my samsung captivate into the boot loader. I've tried the physical key combos mentioned in this thread and there not working.
I tried using ./adb reboot bootloader but the phone does a regular reboot.
I am able to get a splash screen with that says "Download" and has a picture of the Android shoveling, by pressing both volumes and plugin in the power.
But if i do this, the device is not visible when I used ./adb devices
The question is how can i get this to reboot into the bootloader preferably from the terminal so that I can unlock it and install CWM.
Any advice would be much appreciated!

Good job finding the wrong phones forum and digging up an old thread to post on
Sent from my HTC One XL

leptone said:
I am trying to boot my samsung captivate into the boot loader.
Click to expand...
Click to collapse
This forum is specific to the HTC One X/XL. You need to go to the forum specific to the Samsung Captivate. The key sequence is likely different, and getting advice from people with a different device can quite possibly lead get you the incorrect info.
Also, as mentioned above, try not to dig up old threads from 7 months ago.

derp.
wrong thread

Quick question: I'm trying to reboot my android STB in bootloader mode to check its lock/unlock status... Obviously I can't use the Vol Down + Power button in a STB...
So I tried "adb reboot bootloader", which didin't seem to work. I mean, it powered down, then powered up in a screen with the brand's logo, but nothing else happened, and the command "fastboot devices" didn't find any device either (while before that, "adb devices" showed the device normally). Also, I didn't get any unrecognized devices under Device manager which would denote that a new "device" got connected into the system...
I then tried "adb reboot recovery" which works fine...
So what does this situation mean for my STB?

get into recovery without volume buttons

Hey everyone I have a HTC inspire which I flashed jelly time onto, before that my volume buttons worked but now they don't work and the button is complety gone HTC did a very bad job with that it easily came out... So recently when I boot the phone on it boots the normal jelly time startup and the black screen. I have seen the only way to fix this is either factory reset or reflash ROM. But I am unable to do that since ,y volume button is broken. I have read that you can get to recovery via adb and or flash via adb can someone help me out please?

Trozzul said:
Hey everyone I have a HTC inspire which I flashed jelly time onto, before that my volume buttons worked but now they don't work and the button is complety gone HTC did a very bad job with that it easily came out... So recently when I boot the phone on it boots the normal jelly time startup and the black screen. I have seen the only way to fix this is either factory reset or reflash ROM. But I am unable to do that since ,y volume button is broken. I have read that you can get to recovery via adb and or flash via adb can someone help me out please?
Click to expand...
Click to collapse
you can connect your HTC phone to your computer via USB cable, and use the command below, before that you need to install adb shell on Windows.
adb reboot bootloader

Also, you could enter Recovery mode through ROM Toolbox and if you're using TWRP, its touch, so you dont need hardware keys.

Mister_Simon said:
Also, you could enter Recovery mode through ROM Toolbox and if you're using TWRP, its touch, so you dont need hardware keys.
Click to expand...
Click to collapse
I am unable to get into recovery or the normal android screen when it boots up its a black screen I need to get into recovery to reflash the rom

Trozzul said:
I am unable to get into recovery or the normal android screen when it boots up its a black screen I need to get into recovery to reflash the rom
Click to expand...
Click to collapse
So you're stuck on booting and your hardware buttons dont work?
There is a way to get into the recovery in such a situation but that usually relies on the hardware buttons. What device do you have? What recovery?

Try this
Remove battery n reinsert it
Now connect the phone to charger.
Don't do anything keep the phone as it is for 5 -10 min.
It will automatically go to recovery
Sent from my HTC Explorer A310e using xda premium

rockingmanish said:
Try this
Remove battery n reinsert it
Now connect the phone to charger.
Don't do anything keep the phone as it is for 5 -10 min.
It will automatically go to recovery
Sent from my HTC Explorer A310e using xda premium
Click to expand...
Click to collapse
I don't know how that would work.....

Mister_Simon said:
So you're stuck on booting and your hardware buttons dont work?
There is a way to get into the recovery in such a situation but that usually relies on the hardware buttons. What device do you have? What recovery?
Click to expand...
Click to collapse
I don't know the Recovery most likely 5+ and it was touch recovery. as for the device like I said its a htc inspire 4g

Trozzul said:
I don't know the Recovery most likely 5+ and it was touch recovery. as for the device like I said its a htc inspire 4g
Click to expand...
Click to collapse
Hey cool. I used to own an Inspire for couple of years.
Im not sure if understood the condition of your phone and whats working or not but:
take out your battery and reinsert. hold the power button and volume down button for a couple of seconds and it will boot into recovery

Mister_Simon said:
Hey cool. I used to own an Inspire for couple of years.
Im not sure if understood the condition of your phone and whats working or not but:
take out your battery and reinsert. hold the power button and volume down button for a couple of seconds and it will boot into recovery
Click to expand...
Click to collapse
the volume buttons are both broken im asking how to get back into recovery from adb so I can flash a knew rom since mine is bad

Trozzul said:
the volume buttons are both broken im asking how to get back into recovery from adb so I can flash a knew rom since mine is bad
Click to expand...
Click to collapse
Im assuming you have android sdk installed
Connect your phone, locate adb using cmd prompt (change directory) (RUN AS ADMIN), type 'adb reboot recovery' (no quotes)

I will try this in the morning. What screen do I use the command at? Anytime?
Sent from my LG-LG730 using xda app-developers app

Trozzul said:
I will try this in the morning. What screen do I use the command at? Anytime?
Sent from my LG-LG730 using xda app-developers app
Click to expand...
Click to collapse
Follow these fool-proof steps:
Locate your android sdk folders-> navigate to the folder where adb is located ->hold shift + right click on the folder containing adb and select ''open command window here'' ( this will automatically take care of pointing the directory to that location) -> 'adb reboot recovery' ENTER
This will automatically enter recovery. I suggest you restore your old backup .
As for your volume buttons, you should be able to fix it easily if you know a little bit of soldering and know-how.

Mister_Simon said:
Follow these fool-proof steps:
Locate your android sdk folders-> navigate to the folder where adb is located ->hold shift + right click on the folder containing adb and select ''open command window here'' ( this will automatically take care of pointing the directory to that location) -> 'adb reboot recovery' ENTER
This will automatically enter recovery. I suggest you restore your old backup .
As for your volume buttons, you should be able to fix it easily if you know a little bit of soldering and know-how.
Click to expand...
Click to collapse
im sorry i know how to do sdk commands but i meant on the phone screen like as soon as it boots up?

Trozzul said:
im sorry i know how to do sdk commands but i meant on the phone screen like as soon as it boots up?
Click to expand...
Click to collapse
ADB *may* work on the boot logo, but it certainly won't work as the phone is booting.

Trozzul said:
im sorry i know how to do sdk commands but i meant on the phone screen like as soon as it boots up?
Click to expand...
Click to collapse
MacHackz said:
ADB *may* work on the boot logo, but it certainly won't work as the phone is booting.
Click to expand...
Click to collapse
Like MacHackz said. As far as i know also this may be the only way you maybe able to boot into recovery so might as well give it a shot.
MacHackz, your banner made me think i have a bug behind my screen and I spent a while trying figure it out. LOL

HTC Desire HD hard reset without volume buttons
I have htc desire hd and my volume buttons is broken ,my phone is much dispute and have lots of bugs i want to HARD RESET no factory reset only hard reset with rebote. Please help me how to reset my HTC DHD without volume buttons!!
!!sorry for my english!!

SOLVED! (At least for me)
To whom may still be interested, I found a way to get into recovery and subsequently wipe data/factory reset the HTC Inspire 4G/Desire HD without using the volume buttons.
Phone background: the phone that I used had the internal volume buttons broken. It was rooted and unlocked using the effen hack kit, then I flashed a custom ROM on it and I forgot to do a factory reset before I firstly boot up the phone with the new ROM. So it was stuck on the boot animation forever.
Steps for getting into recovery mode without volume buttons:
1. Take the battery off
2. Plug the phone to a wall charger for at least one or two minutes.
3. Put the battery back on along with the battery door and don't touch any buttons.
- The orange led on the front will light up and stay on for a few seconds before the phone automattically gets into recovery
Note: use the touch capacitive buttons to manipulate recovery:
- Home/Menu buttons to navigate up/down
- Back button to go back
- Search button to select
That's pretty much it. At this point you can do anything!
I hope this can help someone out there... If it helped you please hit the thanks button!

my phone is s3 gt-i9300 but but volume up key and home doesnt work.I need to go to recovery to flash a rom so how to go to recovery mode now.please help me.

Swarn_Sen said:
my phone is s3 gt-i9300 but but volume up key and home doesnt work.I need to go to recovery to flash a rom so how to go to recovery mode now.please help me.
Click to expand...
Click to collapse
You can use adb commands to enter in recovery mode. Connect your android to PC. Enable adb debugging and open command prompt in PC.
Type "adb devices" without qoutes and enter then type "adb reboot recovery" and enter. These commands boot your android in recovery mode.

[Q] Hard brick?

Hey Guys,
so ive been messing around with this little phone and think i might have managed a hard brick. Any thoughts or advice would be appreciated.
was attempting to relock the bootloader and flashing my local 4.4.2 rom and on the command prompt when i reached flash system.img parsechunk lines, they failed. as it said permission denied.
Tried to continue with no luck. Restarted my phone and now cant get into recovery and no boot, the only screen i see is the white warning bootloader locked screen, get a vibrate and then it turns off again. Any ways to flash without Recovery or Fastboot or am i completely out of luck?
Sorry im new to motorolas, had no problems messing around with my old SGS2
Thanks in advance everybody.

did you try this ?
http://forum.xda-developers.com/showthread.php?t=2542219

the only problem is cant get the phone into fastboot mode. Thanks for the input though!

mackb44 said:
the only problem is cant get the phone into fastboot mode. Thanks for the input though!
Click to expand...
Click to collapse
I've been in a few situations where I thought I had 'bricked' my phone. One way that worked (sometimes) was to long press the POWER button for a very long time(minutes), then release and (sometimes) it would reboot.
The usual way to the fastboot menu is - power off (which yours probably is), then hold vol. down and press power button for 5/10 seconds and release both.
Good luck!

jamsh said:
I've been in a few situations where I thought I had 'bricked' my phone. One way that worked (sometimes) was to long press the POWER button for a very long time(minutes), then release and (sometimes) it would reboot.
The usual way to the fastboot menu is - power off (which yours probably is), then hold vol. down and press power button for 5/10 seconds and release both.
Good luck!
Click to expand...
Click to collapse
Yea tried both options, no luck!
The only screen i can get now is the bootloader unlocked screen or the white charging screen when plugged in. After that the screen will stay on but is completely black.

Success I can get into fastboot now!!!! not sure why i could not before

mackb44 said:
Success I can get into fastboot now!!!! not sure why i could not before
Click to expand...
Click to collapse
yes i had something similar,bootlocker warning and then the screen going dark. i just ended up using fastboot and flashing a stock rom and went from there.
glad your panic is over .

quizmaniac said:
yes i had something similar,bootlocker warning and then the screen going dark. i just ended up using fastboot and flashing a stock rom and went from there.
glad your panic is over .
Click to expand...
Click to collapse
Yea thanks buddy!
just have to wait for it to charge up before it will let me flash using adb, oddly its only showing that it is charging while plugged into usb and not the wall socket