Develop Bugs

[Q] How to activate diagnostic mode?

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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Click to collapse
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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Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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

[Q] I747M USSD not working after unlock

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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Click to collapse
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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Click to collapse
yes none carrier code work perfectly like *#06# and many other.

Is there Diag mode code for T-mobile M8?

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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Click to collapse
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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Click to collapse
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?
Click to expand...
Click to collapse
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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Click to collapse
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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Click to collapse
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

help with ulocking phone

Is it possible to ulock a Verizon 910v to use any carrier, For example use t moble or att?

This device comes factory unlocked. Will work with any GSM carrier. Just edit APN settings.
Sent from my SM-N910V using Tapatalk

xelanetloads said:
This device comes factory unlocked. Will work with any GSM carrier. Just edit APN settings.
Click to expand...
Click to collapse
How do u edit an settings

FierceTexas said:
How do u edit an settings
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FierceTexas said:
How do u edit an settings
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I think you have to place the sim card first and then go to settings,Mobile Networks,Access Points and select the + and put the APN # and sa.ve

android-incredible said:
I think you have to place the sim card first and then go to settings,Mobile Networks,Access Points and select the + and put the APN # and sa.ve
Click to expand...
Click to collapse
Its in settings, more, network operator then the 3 dot menu in the top right corner add apn . Enter your service providers apn info and your done . If you are not rooted you will get an error message stating not a verizon sim but data will work. in answer to your first question . Yes you can choose any lte carrier in the US or Canada the verizon note 4 isnt sim locked

eSim/BL/root

Just a real quick question before i return the phone tomorrow.
On the g981u1 (purchased from google through Fi), same as everywhere else, has the sim manager disabled, bootloader not unlockable.
From all the searching i did today, which was horrible, i just wanted to verify in a last ditch effort before sending it back.
The only way i found to enable esim is to modify the features.xml (from sounds of it). However to do so you need root, and of course it appears root requires unlocked bootloader(unless i missed something somewhere)
I have been unable to find a way to unlock bootloader(am i wrong?)
I havent found root (without unlocked bootloader)
Edit- nvm i found what i was looking for

skullzaflare said:
Just a real quick question before i return the phone tomorrow.
On the g981u1 (purchased from google through Fi), same as everywhere else, has the sim manager disabled, bootloader not unlockable.
From all the searching i did today, which was horrible, i just wanted to verify in a last ditch effort before sending it back.
The only way i found to enable esim is to modify the features.xml (from sounds of it). However to do so you need root, and of course it appears root requires unlocked bootloader(unless i missed something somewhere)
I have been unable to find a way to unlock bootloader(am i wrong?)
I havent found root (without unlocked bootloader)
Edit- nvm i found what i was looking for
Click to expand...
Click to collapse
So what is your solution?
Sent from my SM-G985F using Tapatalk

skullzaflare said:
Just a real quick question before i return the phone tomorrow.
On the g981u1 (purchased from google through Fi), same as everywhere else, has the sim manager disabled, bootloader not unlockable.
From all the searching i did today, which was horrible, i just wanted to verify in a last ditch effort before sending it back.
The only way i found to enable esim is to modify the features.xml (from sounds of it). However to do so you need root, and of course it appears root requires unlocked bootloader(unless i missed something somewhere)
I have been unable to find a way to unlock bootloader(am i wrong?)
I havent found root (without unlocked bootloader)
Edit- nvm i found what i was looking for
Click to expand...
Click to collapse
did you manage to unlock Esim. I have same issue. I need to know hot to enable esim

axelrade said:
did you manage to unlock Esim. I have same issue. I need to know hot to enable esim
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Click to collapse
So far, no go on the esim. I did get unlocked etc, but it seems something else is keeping the esim inactive. I almost need a snapdragon with esim working (from another country) to compare to

skullzaflare said:
So far, no go on the esim. I did get unlocked etc, but it seems something else is keeping the esim inactive. I almost need a snapdragon with esim working (from another country) to compare to
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Click to collapse
Snapdragon variants aren't eSIM enabled, only Exynos devices.

I remember seeing the option enabled when you flash the Exynos magisk module on a Snapdragon device. It also gave me call recorder.

ChongoDroid said:
I remember seeing the option enabled when you flash the Exynos magisk module on a Snapdragon device. It also gave me call recorder.
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Click to collapse
CSC change does not appear to work on snapdragon, i already tried it.
HOWEVER, editing Build.prop in vendor did enable sim manager for me, however status is showing esim imei as unknown (yes my box has 2 imei) and the add gets stuck

skullzaflare said:
CSC change does not appear to work on snapdragon, i already tried it.
HOWEVER, editing Build.prop in vendor did enable sim manager for me, however status is showing esim imei as unknown (yes my box has 2 imei) and the add gets stuck
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Click to collapse
Can you specify how you accessed Build.prop and also what you edited to enable sim manager?

axelrade said:
did you manage to unlock Esim. I have same issue. I need to know hot to enable esim
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Click to collapse
dnldcs said:
Can you specify how you accessed Build.prop and also what you edited to enable sim manager?
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Click to collapse
I am rooted/unlocked
In vendor\build.prop i found "persist.radio.multisim.config=ss" which is single sim. dsds would be for dual sim. Phone would not let me modify or replace the build.prop.
With the recommendation from Orphee i installed this package in my magisk
https://forum.xda-developers.com/apps/magisk/module-magiskhide-props-config-t3789228
From there it let me change that line to dsds, and thus here we are. I am unsure if dsds should be a different line for esim, or if something else is needed to "start" the esim.

Are both modules enabled ? CSC and Props config
And is there 2 IMEI written in phone About screen ? Not only the box.
View attachment 5131175

Orphee said:
Are both modules enabled ? CSC and Props config
And is there 2 IMEI written in phone About screen ? Not only the box.View attachment 5131175
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Click to collapse
Currently the IMEI for esim shows unknown, so it IS possible i broke that during UL/root or something, but i feel more inclined to believe it is just not enabled. On stock rom it only showed the normal IMEI
I have tried both yes

Then you must fix or find how to have the IMEI number shown in the phone menu.
Esim registration will not work until you have the IMEI number shown.

Orphee said:
Then you must fix or find how to have the IMEI number shown in the phone menu.
Esim registration will not work until you have the IMEI number shown.
Click to expand...
Click to collapse
Correct! That is where i am currently stuck lol

Download Google dialer and then enter *#*#467#*#" and there's some esim related toggles available now.
You can enable RCS here too if you know what you're doing.

ChongoDroid said:
Download Google dialer and then enter *#*#467#*#" and there's some esim related toggles available now.
You can enable RCS here too if you know what you're doing.
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Click to collapse
Just tried. It does not work.

insomniacandroid said:
Just tried. It does not work.
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Click to collapse
Dang

ChongoDroid said:
Dang
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Click to collapse
Do you a screenshot?
Inviato dal mio SM-G9860 utilizzando Tapatalk