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Hi,
I'd like to disable USB everything (MTP, ADB, whatever the camera mode is) on my phone for security reasons. Currently if I plug my phone into a computer (even with the screen locked), I can download data via gMTP. I read here: http://www.nimdae.com/?p=851 that encrypting my phone won't solve this problem.
I still want to encrypt my phone, but if I can't disable MTP, then I'm not that interested.
How can I disable USB stuff completely? I know how to turn off ADB, and the phone lets me select betwene MTP and camera mode under settings->storage->USB Connection Settings, but it won't let me select neither option, only one or the other.
In older versions of Android, when I connect a phone to a computer, I get a message on screen telling me that it's connected and that I can enable mass storage if I like. I get that the reason they had that message was because they _needed_ it because mass storage had to unmount the SD card for it to work. However, how can I get something like that back for MTP?
If there's not a GUI way to disable this stuff, is there a setting for "persist.sys.usb.config" that would disable it instead?
I just don't want to waste the effort of dealing with phone encryption if plugging it into a computer completely avoids the issue.
Edit: I'm on a VZW LTE/CDMA gNex on JB Sourcery 2.3, but I'd be willing to migrate ROMs if necessary.
kbitz said:
Hi,
I'd like to disable USB everything (MTP, ADB, whatever the camera mode is) on my phone for security reasons. Currently if I plug my phone into a computer (even with the screen locked), I can download data via gMTP. I read here: http://www.nimdae.com/?p=851 that encrypting my phone won't solve this problem.
I still want to encrypt my phone, but if I can't disable MTP, then I'm not that interested.
How can I disable USB stuff completely? I know how to turn off ADB, and the phone lets me select betwene MTP and camera mode under settings->storage->USB Connection Settings, but it won't let me select neither option, only one or the other.
In older versions of Android, when I connect a phone to a computer, I get a message on screen telling me that it's connected and that I can enable mass storage if I like. I get that the reason they had that message was because they _needed_ it because mass storage had to unmount the SD card for it to work. However, how can I get something like that back for MTP?
If there's not a GUI way to disable this stuff, is there a setting for "persist.sys.usb.config" that would disable it instead?
I just don't want to waste the effort of dealing with phone encryption if plugging it into a computer completely avoids the issue.
Edit: I'm on a VZW LTE/CDMA gNex on JB Sourcery 2.3, but I'd be willing to migrate ROMs if necessary.
Click to expand...
Click to collapse
Stock Jelly Bean won't enable MTP/PTP until you have unlocked your lockscreen. The same goes for CM10 by the way. It seems that JB Sourcery modified this behavior.
You could try enabling USB fast charge mod using a custom kernel (when enabled, phone see computer as an ac charging source, disabling USB data connection PC and only charges, but at a higher rate).
Other than that, I'm not sure.
Also, encryption only works really at boot time and shutdown time. When you shut down, everything is "locked" and upon booting up, it requires the key to "in lock" everything. But once it's" unlocked" it stays that way until you reboot.
Sent from my Galaxy Nexus using Tapatalk 2
geoffcorey said:
You could try enabling USB fast charge mod using a custom kernel (when enabled, phone see computer as an ac charging source, disabling USB data connection PC and only charges, but at a higher rate).
Click to expand...
Click to collapse
Thanks.
Also, encryption only works really at boot time and shutdown time. When you shut down, everything is "locked" and upon booting up, it requires the key to "in lock" everything. But once it's" unlocked" it stays that way until you reboot.
Click to expand...
Click to collapse
Yes, this is the reason why I'd like to be able to disable MTP. My point was that it's not worth the hassle of encrypting the data at rest if all anybody would have to do to get the data off was plug it into a computer. Like most people, my cell phone is running all the time. We can force action after a bunch of failed passwords, but if the attacker doesn't have to interact with the unlock screen at all, then there's no protection there.
Petrovski80 said:
Stock Jelly Bean won't enable MTP/PTP until you have unlocked your lockscreen. The same goes for CM10 by the way. It seems that JB Sourcery modified this behavior
Click to expand...
Click to collapse
Thanks! This was the ticket. Here's what I failed to notice: Once I've unlocked the screen while it's plugged in, I have MTP for the entirety of the time it's plugged in, even if the phone is locked again before the connection is started. If, however, I plug it in locked and don't unlock it before starting the connection, I get nothing.
I'm marking this solved.
Thanks so much to both of you.
Disable MTP in Samsung Tab A
Hello,
I have a samsung Tab A 2016 (SM-T580) & in developer options i put the USB configuration into charging mode, & turn the developer options off. But whenever i plug it into a PC it turns into MTP automatically & I want to disable this. Any help please?
So my screen is broken and i am trying to use [email protected] but i can't enable the usb debugging. Is there any way to enable it on the computer?
I don't want to flash a rom because i want to keep the data.
I have the same problem, screen on my wifes E4GT is broke but phone seems to work. When I connect via USB it shows the two devices but no drives show up. Tried kies and it says to enable debugging mode, which I thought I did but I don't remember.
hi, i got this sgn from a friend with a broken screen, and ive now replaced the screen and the phone turns on and boots up no problem. but when i plug it in to my puter, it says usb device not recognized, one ot the usb devices attached.... as well in settings the wifi on/off toggle starts greyed out, if i go into the wifi setup, i can push the toggle and it says turning on wifi, but then after about 20 seconds or so, it just flicks the toggle back to off. bluetooth if i press the toggle, it instantly flicks back to off, and wont turn/stay on. and the last thing i have noticed that is not right, is when i try to go into the camera, it just f/c's and says gallery has has stopped, yet if i go into the gallery, it comes up. but f/c's if i try to access the camera.. i am thinking its probably a hardware issue, just was wondering if anyone might be able to give me any extra insight or suggestions, thanks in advance.
edit: oh, and the phone charges through the usb port, which i find weird that the puter wont recognize it...
slickwidnick said:
hi, i got this sgn from a friend with a broken screen, and ive now replaced the screen and the phone turns on and boots up no problem. but when i plug it in to my puter, it says usb device not recognized, one ot the usb devices attached.... as well in settings the wifi on/off toggle starts greyed out, if i go into the wifi setup, i can push the toggle and it says turning on wifi, but then after about 20 seconds or so, it just flicks the toggle back to off. bluetooth if i press the toggle, it instantly flicks back to off, and wont turn/stay on. and the last thing i have noticed that is not right, is when i try to go into the camera, it just f/c's and says gallery has has stopped, yet if i go into the gallery, it comes up. but f/c's if i try to access the camera.. i am thinking its probably a hardware issue, just was wondering if anyone might be able to give me any extra insight or suggestions, thanks in advance.
edit: oh, and the phone charges through the usb port, which i find weird that the puter wont recognize it...
Click to expand...
Click to collapse
hey,
if you don't mind rooting and phone is not underwarranyty, try: wugfresh nexus toolkit
or cyanogemod.org
may help fix...... and both are automated very easy.
gnexususer said:
hey,
if you don't mind rooting and phone is not underwarranyty, try: wugfresh nexus toolkit
or cyanogemod.org
may help fix...... and both are automated very easy.
Click to expand...
Click to collapse
Yeah, see the problem is my computer won't recognize the phone to be able to perform any of the functions of the toolkit... So I don't know what options (if any) I have...
slickwidnick said:
Yeah, see the problem is my computer won't recognize the phone to be able to perform any of the functions of the toolkit... So I don't know what options (if any) I have...
Click to expand...
Click to collapse
try reboot to odin bootloader. long press volume down + power button. can u boot it up?
memaro_maro said:
try reboot to odin bootloader. long press volume down + power button. can u boot it up?
Click to expand...
Click to collapse
yeah, ive got a usb jig to boot it into odin download mode, but i think i tried it but the computer still didnt recognize it, ill try it again and let you nkow what happens.. also, i have another working sgn here, and i switched out the boards, cause the usb port is not on the mainboard, it is connected by a flex ribbon (thinking it may be a faulty usb port) but either one generates the same results..
You dont need Odin. Just use fastboot and flash the latest Factory image. There are plenty of guides on how to do that. Good luck! If you cant get it to work just let me know.
Sent from my Galaxy Nexus using XDA Premium HD app
slickwidnick said:
yeah, ive got a usb jig to boot it into odin download mode, but i think i tried it but the computer still didnt recognize it, ill try it again and let you nkow what happens.. also, i have another working sgn here, and i switched out the boards, cause the usb port is not on the mainboard, it is connected by a flex ribbon (thinking it may be a faulty usb port) but either one generates the same results..
Click to expand...
Click to collapse
correctly install/setup adb & fastboot first & try ~
http://forum.xda-developers.com/showthread.php?t=2588979
if still not recognize ur device use odin tool, from odin bootloader
odin ~
http://forum.xda-developers.com/galaxy-nexus/general/guide-restore-to-stock-unbrick-galaxy-t2065470
memaro_maro said:
correctly install/setup adb & fastboot first & try ~
http://forum.xda-developers.com/showthread.php?t=2588979
if still not recognize ur device use odin tool, from odin bootloader
odin ~
http://forum.xda-developers.com/galaxy-nexus/general/guide-restore-to-stock-unbrick-galaxy-t2065470
Click to expand...
Click to collapse
okay i tried your advice, but the computer still fails to recognize the phone, i installed the drivers, cause the computer picks up the other sgn that i have here, i just unplugged the one thats fine, and plugged in the one i am trying to fix ant it doesnt do anything,...
Go to System Settings -> Storage -> 3 dots -> USB connection, and set MTP ON (V)
and if that doesn't work, try another DATA cable
.
Ed V said:
Go to System Settings -> Storage -> 3 dots -> USB connection, and set MTP ON (V)
and if that doesn't work, try another DATA cable
.
Click to expand...
Click to collapse
tried setting mtp on, tried setting ptp on, tried setting debugging mode off and on, tried a different cable, still nothing..
something i did notice was that i have another sgn here and i went to the storage settings, and i was able to uncheck both mtp and ptp and my computer installed a new device "samsung something something" cant remember what the new device was tho..
oh and the bootloader is locked on the sgn im trying to fix and it is unlocked on the second sgn i have here...
could that have something to do with any of this?
Hi all!
I recently dropped my OP3 and now i have a black screen and touch screen doesn't work. The phone is still on and operating (i tried calling it from another phone and it works). I want to recover data but apparently i have usb debug off and i tried connecting a keyboard with an OTG but apparently i had to activate OTG from phone, otherwise it doesn't recognizes it.
Do you know any method to recover data?
My last chances are repairing the screen myself to avoid the assistence erase all the data, or transfer my motherboard to another OP3, but do you know any other method before these two above?
Thank you
manto02 said:
Hi all!
I recently dropped my OP3 and now i have a black screen and touch screen doesn't work. The phone is still on and operating (i tried calling it from another phone and it works). I want to recover data but apparently i have usb debug off and i tried connecting a keyboard with an OTG but apparently i had to activate OTG from phone, otherwise it doesn't recognizes it.
Do you know any method to recover data?
My last chances are repairing the screen myself to avoid the assistence erase all the data, or transfer my motherboard to another OP3, but do you know any other method before these two above?
Thank you
Click to expand...
Click to collapse
Most likely the connector has become loose (since you have not said anything about the screen being broken) and you can try to reconnect it by yourself.
Another alternative is to see if adb is working and your PC is authorised. If so, you can use the 'adb pull /sdcard' command to copy your data to the PC.
Alternately, search with Google since I remember reading about a method to mirror your screen and then using the mouse to enable whatever you want.
tnsmani said:
Most likely the connector has become loose (since you have not said anything about the screen being broken) and you can try to reconnect it by yourself.
Another alternative is to see if adb is working and your PC is authorised. If so, you can use the 'adb pull /sdcard' command to copy your data to the PC.
Alternately, search with Google since I remember reading about a method to mirror your screen and then using the mouse to enable whatever you want.
Click to expand...
Click to collapse
I'll check the connector but the screen has some cracks (tho i've seen screens in worse condition then mine work).
And i can't use the mouse because OTG is not on, on other phones you don't need to give permission to use OTG but on mine you have to,
manto02 said:
I'll check the connector but the screen has some cracks (tho i've seen screens in worse condition then mine work).
And i can't use the mouse because OTG is not on, on other phones you don't need to give permission to use OTG but on mine you have to,
Click to expand...
Click to collapse
What about adb? That is the easiest.
I am not talking about connecting the mouse to the phone through OTG. I am talking about using the PC's mouse to manipulate the cursor to the point where you want it on your PC's screen where your mobile screen is mirrored.
tnsmani said:
What about adb? That is the easiest.
I am not talking about connecting the mouse to the phone through OTG. I am talking about using the PC's mouse to manipulate the cursor to the point where you want it on your PC's screen where your mobile screen is mirrored.
Click to expand...
Click to collapse
I think you are referring to Vysor, but i can't use it with debugg off again. Edit: I see that there are other apps like that but for most of them you have to install them on the phone, i'll search a bit more tho.
As for ADB i tried before with another phone with debug off and adb doesn't see the phone, i'll try with my broken phone but i don't think it will be different.
manto02 said:
I think you are referring to Vysor, but i can't use it with debugg off again. Edit: I see that there are other apps like that but for most of them you have to install them on the phone, i'll search a bit more tho.
As for ADB i tried before with another phone with debug off and adb doesn't see the phone, i'll try with my broken phone but i don't think it will be different.
Click to expand...
Click to collapse
Just now, I switched off USB debugging in my OP3 and connected it to the Laptop. While the command 'adb devices' does not find the phone, as soon as it is connected, it shows up as a storage device and I can open it and copy data. I think that for this to work, you should have enabled MTP option for file transfer.
Check this on your phone.
EDIT: Check THIS as there seems to be a way though I am not sure that it works on current Android versions since the file locations may be different. Read till the end.
My phone goes in charging mode when connected to pc, and pc doesn't see it.
Did you do that through recovery mode?
manto02 said:
My phone goes in charging mode when connected to pc, and pc doesn't see it.
Did you do that through recovery mode?
Click to expand...
Click to collapse
No. Tried it while booted.
Now I tried on recovery mode. Still I get it as a storage device and I can copy data.
So most probably your phone is stuck on charging and not on MTP.
tnsmani said:
No. Tried it while booted.
Now I tried on recovery mode. Still I get it as a storage device and I can copy data.
So most probably your phone is stuck on charging and not on MTP.
Click to expand...
Click to collapse
I believe so, every time I connected it to pc i had to switch manually from charging to recovery.
I guess my best solution is to buy a screen replacement and repair it myself
manto02 said:
I believe so, every time I connected it to pc i had to switch manually from charging to recovery.
I guess my best solution is to buy a screen replacement and repair it myself
Click to expand...
Click to collapse
Have you tried fastboot flash twrp recovery and then fastboot reboot to recovery
You can try usb c to hdmi adapter , connect to a monitor or tv.
I am not sure but worth trying!!!
manto02 said:
Hi all!
I recently dropped my OP3 and now i have a black screen and touch screen doesn't work. The phone is still on and operating (i tried calling it from another phone and it works). I want to recover data but apparently i have usb debug off and i tried connecting a keyboard with an OTG but apparently i had to activate OTG from phone, otherwise it doesn't recognizes it.
Do you know any method to recover data?
My last chances are repairing the screen myself to avoid the assistence erase all the data, or transfer my motherboard to another OP3, but do you know any other method before these two above?
Thank you
Click to expand...
Click to collapse
From what i can remember, the recovery mode, accessible from the fastboot menu, has a usb access mode.
If worst comes to worst though, i personally have replaced the screen on my OP3, and its not as difficult as it seems or is made out to be. Took me max 4 hrs.
Hi,
i have a SM-A705FN/DS bumped in a corner with screen broken and black (doesnt turn on). I need to recover data from it but it doesnt have developer options enabled. My problem isnt black screen of death... its broken at all!
I had spent the entire day searching for posts to enable debbuging options through adb commands but... nothing. Also i tried with odin and one clockmodwork recovery but ever fails.
I can enter the recovery mode and i think that entering the second option (bootloader) i will do something, because my laptop is detecting a "Samsung usb modem" but adb command "adb devices" doesnt show anything.
What can I do?
Thanks in advance. Best regards.
Replace ur screen?
Anter32 said:
Replace ur screen?
Click to expand...
Click to collapse
Tecnical services Will erase all interna memory. That is why i need to recover all files inside it.
Thanks!
Wdym? Where are you changing your screen?
Its like saying one of my wheels( a car) not usable so we chnage the engine
There is something wrong with this .
I have chamged multiple times my screen and never have i ever heard this
Anter32 said:
Wdym? Where are you changing your screen?
Its like saying one of my wheels( a car) not usable so we chnage the engine
There is something wrong with this .
I have chamged multiple times my screen and never have i ever heard this
Click to expand...
Click to collapse
Hi,
my house insurance will repair the screen and they told me that it will be erase. At the moment, I just replaced screen for older mobiles (iphones 4, sony, ...) and never, NEVER, got files lost. But now...
I am trying to find a rom with "usb debugging" enabled in order to connect the phone to my computer with adb commands. I had tried to connect with otg hdmi but nothing is showing up on my tv (my P20Pro is showing perfectly).
What can i do?
Thanks in advance.
josemarianton said:
Hi,
my house insurance will repair the screen and they told me that it will be erase. At the moment, I just replaced screen for older mobiles (iphones 4, sony, ...) and never, NEVER, got files lost. But now...
I am trying to find a rom with "usb debugging" enabled in order to connect the phone to my computer with adb commands. I had tried to connect with otg hdmi but nothing is showing up on my tv (my P20Pro is showing perfectly).
What can i do?
Thanks in advance.
Click to expand...
Click to collapse
Thats a very wiers situation but i have an idea
Have you ever used or setted the link to windows option up?
Cause with that you can start sharing the screen to pc and it just works when u already used that before ur screen broke
Otherwise i have no advice for the adb as i never needed to use adb for recovering my data
Good Luck
Hello, I have the same problem. My screen is blank but hearing notifications on my phone. As phone is under warranty, they might replace the unit and I would want to recover my data.
Also searching on how to enable usb debugging via ADB, but not sure if below (Option 2) will work. Still gonna try it on weekend on my freetime.
Link : https://www.deeplytech.com/enable-usb-debugging-on-android-with-black-screen/
josemarianton said:
Hi,
i have a SM-A705FN/DS bumped in a corner with screen broken and black (doesnt turn on). I need to recover data from it but it doesnt have developer options enabled. My problem isnt black screen of death... its broken at all!
I had spent the entire day searching for posts to enable debbuging options through adb commands but... nothing. Also i tried with odin and one clockmodwork recovery but ever fails.
I can enter the recovery mode and i think that entering the second option (bootloader) i will do something, because my laptop is detecting a "Samsung usb modem" but adb command "adb devices" doesnt show anything.
What can I do?
Thanks in advance. Best regards.
Click to expand...
Click to collapse
i have samsung A70 and for months experiencing black screen of death on and off , rebooting etc, found solution today. removed phone from the magnetic phone case i purchased 10 months ago and phone is working perfect,