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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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Click to collapse
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
How can I access Engineer/Service mode on my OP3? I would like to view LTE information and select a specific band. It was really easy on my old Samsung. I have tried *#*#83781#*#* and *#*#2637643#*#* -When I type these codes, it diminishes itself and nothing happens. Then I tried the old *#*#4636#*#* but it didn't had that setting to select LTE band. I also tried *#36446337# and *#808# and these also don't have that setting.
Thanks
I join the request
*#801# engineer mode
you can try replacing the x with 1-9 *#80x#
At the moment you can't unlock new lte bands, we need a specific patch for op3 (64bit patch) because NVRAM values will reset after reboot the phone.
I've already tried but my pc don't recognizes op3, so good luck, maybe with a custom kernel will work?
For more information on unlocking bands, join the thread http://forum.xda-developers.com/oneplus-3/help/unlocking-lte-bands-t3425871
NotAxel said:
*#801# engineer mode
you can try replacing the x with 1-9 *#80x#
At the moment you can't unlock new lte bands, we need a specific patch for op3 (64bit patch) because NVRAM values will reset after reboot the phone.
I've already tried but my pc don't recognizes op3, so good luck, maybe with a custom kernel will work?
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I've tried with all the sequences from 1 to 9 without success. BTW, I read somewhere the Engineer/Service Mode has a setting in the A3000 to switch from Asian configuration to USA configuration. Is it true?. That will fix my LTE issues.
nebtrx said:
BTW, I read somewhere the Engineer/Service Mode has a setting in the A3000 to switch from Asian configuration to USA configuration. Is it true?. That will fix my LTE issues.
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nope already tried, nothing changes
NotAxel said:
nope already tried, nothing changes
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Thx!
*#*#4636#*#*
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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Click to collapse
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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Click to collapse
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
Hidden Menu dial codes
Sprint
5689#*450#
Korean Model
*#546368#*500#
Other's might be, I'm on Sprint
3845#*450#
3845#*500#
Hidden Menu let's you run diagnostic tests.
Each carrier's Hidden Menu can offer different options
Not working on Korean model. What's inside hidden menu?
jcfunk said:
Hidden Menu dial codes
Sprint
5689#*450#
Other's might be, I'm on Sprint
3845#*450#
3845#*500#
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Click to collapse
I have the 450 model through Verizon. None of these codes work.
Inerent said:
Not working on Korean model. What's inside hidden menu?
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Click to collapse
Try *#546368#*500#.
rustypie said:
I have the 450 model through Verizon. None of these codes work.
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Click to collapse
Try
Verizon Wireless: ##228378 (+ send)
wilkie0 said:
Try *#546368#*500#.
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Click to collapse
Work well with Korean model.
I notice that there is an option for VoWiFi in the SVC Menu. Do we need to enable it to use with the cellular network that supports it?
Inerent said:
Not working on Korean model. What's inside hidden menu?
Click to expand...
Click to collapse
this works and is tested
*#546368#*500#
jcfunk said:
Hidden Menu dial codes
Sprint
5689#*450#
Korean Model
*#546368#*500#
Other's might be, I'm on Sprint
3845#*450#
3845#*500#
Hidden Menu let's you run diagnostic tests.
Each carrier's Hidden Menu can offer different options
Click to expand...
Click to collapse
what can i test on this?
hwcheng said:
I notice that there is an option for VoWiFi in the SVC Menu. Do we need to enable it to use with the cellular network that supports it?
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I'm wondering the same thing. I am on T-Mobile which supports Wi-Fi calling but even when I turn this on in the SVC menu, I'm not sure how I can know if Wi-Fi calling works.
Add it 5457#*500#
The only code is usable for my Sprint unlocked V50 is the first one of the OP,but in the options it gives me,i dont have the SVC menu option like i have in other LG models.
I want to see the condition of my battery and its charging cycles.
Any idea or another code?
I tried also the other codes given in the OP.
Sprint V50, use at your own risk, some settings changes requires unlock code, get it from Sprint.
##33284# debug info
5689#*450# device test, reset, log, ort
*#*#4636#*#* phone information
##3282# advanced, lte, apn, ims
##3424# diag mode
*#*#1472365#*#* protocol, adb shell
##72786# scrtn provisioning, factory reset
*#*#426#*#* google play diag
hwcheng said:
I notice that there is an option for VoWiFi in the SVC Menu. Do we need to enable it to use with the cellular network that supports it?
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Click to collapse
What is the code you used to find the svc menu?
I am trying the 5689#*450# for my Sprint unlocked V50,but it opens a hidden menu only for device tests.
jcfunk said:
Hidden Menu dial codes
Sprint
5689#*450#
Korean Model
*#546368#*500#
Other's might be, I'm on Sprint
3845#*450#
3845#*500#
Hidden Menu let's you run diagnostic tests.
Each carrier's Hidden Menu can offer different options
Click to expand...
Click to collapse
On the V50S (V510N) U+ Korean model I get the hidden menu with *#546368#*510#
While I get the Service menu with 5457#*510#
These are the menu items on V510N
In my LM-V450PM Sprint model the hidden menu is this as shown in my screenshot below.
This is the V510N Service menu
syneoa said:
Sprint V50, use at your own risk, some settings changes requires unlock code, get it from Sprint.
##33284# debug info
5689#*450# device test, reset, log, ort
*#*#4636#*#* phone information
##3282# advanced, lte, apn, ims
##3424# diag mode
*#*#1472365#*#* protocol, adb shell
##72786# scrtn provisioning, factory reset
*#*#426#*#* google play diag
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Click to collapse
Hi ! I tried to use ##3282# code, but for editing settings I need security code. I have Sprint unlocked LMV450PM smartphone. Does anyone know how to get this security code ?
IT IT said:
Hi ! I tried to use ##3282# code, but for editing settings I need security code. I have Sprint unlocked LMV450PM smartphone. Does anyone know how to get this security code ?
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Click to collapse
i called t-mobile and they gave me mine.
what are you trying to do if you can get in there?
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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Click to collapse
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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Click to collapse
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?
Click to expand...
Click to collapse
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..
Click to expand...
Click to collapse
But we can't enable on vzw on note 10 cause no root correct or did I misinterpret?