How can i enable diagnostic mode on T-mobile Htc M8?
3424 doesn't work
jkjambo said:
How can i enable diagnostic mode on T-mobile Htc M8?
3424 doesn't work
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if your in sense why not just use the phone diagnostics from sense? its *#*#4636#*#*
syaoran68 said:
if your in sense why not just use the phone diagnostics from sense? its *#*#4636#*#*
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that's completely different thing
i need diag mode and that's only test mode
what are you trying to diagnose?
syaoran68 said:
what are you trying to diagnose?
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why are you interested in this?
i need it for few reasons , like trying to unlock lte bands , to make a back up of qcn , ect...
so is there diag mode for t-mob m8 or not? or do i need some kernel with it?
jkjambo said:
why are you interested in this?
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Because if we know what you're trying to do we can give better advice.
Unless what you're trying to do is technically against forum rules, of course
jkjambo said:
why are you interested in this?
i need it for few reasons , like trying to unlock lte bands , to make a back up of qcn , ect...
so is there diag mode for t-mob m8 or not? or do i need some kernel with it?
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what was said above ^
but back to your question. Yes there is a diag mode available, but you need a bypass card in order to access it. this diag mode is normally meant for diagnosing faulty mainboards, and the such.
so basically yes there is a mode, but no your not going to be able to get access to it. cause the card itself is a unicorn, and there have been some home made cards but realistically if your trying to download / change the bands its nearly impossible. since the firmware's are so locked down.
EddyOS said:
Because if we know what you're trying to do we can give better advice.
Unless what you're trying to do is technically against forum rules, of course
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what can you do with diag mode which is against rules? i'm not trying to change imei or something like that
syaoran68 said:
what was said above ^
but back to your question. Yes there is a diag mode available, but you need a bypass card in order to access it. this diag mode is normally meant for diagnosing faulty mainboards, and the such.
so basically yes there is a mode, but no your not going to be able to get access to it. cause the card itself is a unicorn, and there have been some home made cards but realistically if your trying to download / change the bands its nearly impossible. since the firmware's are so locked down.
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it's avaliable on sprint m8 with this code ##3424# , so what's problem with t-mob m8?
i think there should be some adb commands at least, but i'm asking if there is some code for it , like it's on sprint version
It should be the same code for all devices, unless the carrier has disabled it
EddyOS said:
It should be the same code for all devices, unless the carrier has disabled it
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not working on t-mobile m8 . as i know *#*#3424#*#* works on gsm m8 (international version) , but it doesn't work on t-mobile . i'm now on lollipop , but it wasn't working on kitkat too
here is answer . Thanks to marhinal88
On:
su
echo 1 > /sys/devices/virtual/android_usb/android0/f_diag/on
Off:
su
echo 0 > /sys/devices/virtual/android_usb/android0/f_diag/on
Related
Anyone know how to activate the diagnostic mode on the one m8? The old htc one code doesn't work,
*#*#3424#*#*
ashyx said:
*#*#3424#*#*
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That's the previous model's code and does not work on the m8.
alqali said:
That's the previous model's code and does not work on the m8.
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looks like someone has slipped an M7 indside my M8 then because it works just fine here!
ashyx said:
looks like someone has slipped an M7 indside my M8 then because it works just fine here!
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That's strange. I have tried the code on two AT&T models and nothing happens. Which model do you have and can you explain what you did step by step to get it to work. I just entered it in the phone's dial pad and nothing happens.
alqali said:
That's strange. I have tried the code on two AT&T models and nothing happens. Which model do you have and can you explain what you did step by step to get it to work. I just entered it in the phone's dial pad and nothing happens.
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It works for me, international version.
Also just put it as shown into the dial pad.
Though you should be abe to see some of the diagnostic tools if you go through the HTC Guide App, IF you have it in your app drawer? Doesn't give ALL of the possible diagnostics but it gives a couple of it.
alqali said:
That's strange. I have tried the code on two AT&T models and nothing happens. Which model do you have and can you explain what you did step by step to get it to work. I just entered it in the phone's dial pad and nothing happens.
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International version. Just copied and pasted into the dialler. Have you tried enabling the developer options see if that helps?
Yep, developer's options are on. AT&T most likely removed the function or changed the code
I have unlock my sgh-I747M "version 4.3" via spt box , after unlock everything work well "3G + calls + signal" but I can't use carrier USSD code
how can I fix this problem ????
Are you using a custom rom?
replay
DocHoliday77 said:
Are you using a custom rom?
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no I use stock rom, No root, No CWM
Im assuming since you unlocked you are using it on a different carrier then. May be that the codes you are entering are trying to communicate with AT&T networks and if you arent with AT&T is probably why they aren't working.
Just a guess.
replay
DocHoliday77 said:
Im assuming since you unlocked you are using it on a different carrier then. May be that the codes you are entering are trying to communicate with AT&T networks and if you arent with AT&T is probably why they aren't working.
Just a guess.
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is there any way to use ussd code on this phone "and file or program"
No idea. Sorry. Might be something hidden in one of the xml files, or it may be hard coded into an app. Im really not sure.
Your non carrier-specific codes work, right?
replay
DocHoliday77 said:
No idea. Sorry. Might be something hidden in one of the xml files, or it may be hard coded into an app. Im really not sure.
Your non carrier-specific codes work, right?
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yes none carrier code work perfectly like *#06# and many other.
how to enable engineering mode? I tried *#*#4636#*#* but nothing happened!
any solution?
Ps. I'm non-root
For me it's working so I guess you have a carrier version that maybe have this option not available. I have the Google version.
you can always borrow someones sprint sim fir a bit then ull have access to a lot of commands.. i was able to get data programming, debug menu, the 4636 etc etc on a vzw variant just by utting in a dif sim
hostmark said:
how to enable engineering mode? I tried *#*#4636#*#* but nothing happened!
any solution?
Ps. I'm non-root
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Worked here Verizon pixel 3 xl
Hi everyone, I'm from Brazil and I was wondering if it is possible to remove the demonstration mode of the LM-G710V, I bought it from a promoter of the manufacturer and the device has several limitations, is it possible to replace the ROM? and if so how?
It's just a setting in the setup.
Just enter setup.. Think it's under display
maydayind said:
It's just a setting in the setup.
Just enter setup.. Think it's under display
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It's not that simple
Just activate developer options and there you will have turn off retail demo mode.
Developer settings then demo. Turn it off. And yeas it's that simple.
does not work
Inerent said:
Just activate developer options and there you will have turn off retail demo mode.
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the demo mode option is disabled, it's a demo-only cell phone, no chip, no memory card, I wanted to know if I can change the ROM to fix this, and if so, how?
ruanpatrick said:
the demo mode option is disabled, it's a demo-only cell phone, no chip, no memory card, I wanted to know if I can change the ROM to fix this, and if so, how?
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You cant, only variant that have roms are the European variant due to it having an unlockable bootloader
Or you can try to flash Korean pie firmware. Search here. https://forum.xda-developers.com/lg...how-to-install-pie-stock-treble-aosp-t3914079
Hi,
I cannot access to service mode menu *#2263# , blank screen, I have exynos versio of note 10.
Any idea?
Works fine on my US SD model.
My unlocked 10+ flashed with t-mobile firmware works for that service mode.
BTW did you try other codes like *#0*#, to see if they work? I also remember something about Exynos having different sequence for some codes than SD in the past, but I don't remember details. I think there are some apps that can list all the codes available for your phone, so that would be my next step.
pete4k said:
BTW did you try other codes like *#0*#, to see if they work? I also remember something about Exynos having different sequence for some codes than SD in the past, but I don't remember details. I think there are some apps that can list all the codes available for your phone, so that would be my next step.
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Hi, *#0*# work for me but service mode *#2263# no.
I don't know what's the code for N970F model
both codes posted above my post works on my unlocked 512gb 10+.
marctronixx said:
both codes posted above my post works on my unlocked 512gb 10+.
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Hi,rooted?
trignogd said:
Hi, *#0*# work for me but service mode *#2263# no.
I don't know what's the code for N970F model
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dl phoneinfo.apk or similar that lists all the dialer codes for u to try..
if none work then its possible ur carrier disabled them.. if u have root u can enable them.. on sd devices you would enable in the file /efs/FactoryApp/keystr and /efs/carrier/HiddenMenu..
i have vzw who blocks dialer codes so i always have to enable them manually..
trignogd said:
Hi,rooted?
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No, stock out of the box no root.
elliwigy said:
dl phoneinfo.apk or similar that lists all the dialer codes for u to try..
if none work then its possible ur carrier disabled them.. if u have root u can enable them.. on sd devices you would enable in the file /efs/FactoryApp/keystr and /efs/carrier/HiddenMenu..
i have vzw who blocks dialer codes so i always have to enable them manually..
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But we can't enable on vzw on note 10 cause no root correct or did I misinterpret?