Develop Bugs

Network mode manually change

Type dialer *#197328640# and go to UMTS>DEBUG SCREEN>PHONE CONTROL>NETWORK CONTROL>BAND SELECTION>GSM BAND OR WCDMA BAND
important...
1. hit your conty carier network band. others not working eg, sri lanka gsm band is 900/1800. wcdma 2000
2, dont hit any other options. if hit you may broke your rom.
3. befor you going to flash another rom first hit the band to automatic
UMTS>DEBUG SCREEN>PHONE CONTROL>NETWORK CONTROL>BAND SELECTION>automatic
if you help this advice just hit the thanks button.

How to get into that menu.. What's the code?
Enviado desde mi SAMSUNG-SGH-I747 usando Tapatalk 2

11fabe said:
How to get into that menu.. What's the code?
Enviado desde mi SAMSUNG-SGH-I747 usando Tapatalk 2
Click to expand...
Click to collapse
*#197328640#

harshaedvern said:
Type dialer *#197328640# and go to UMTS>DEBUG SCREEN>PHONE CONTROL>NETWORK CONTROL>BAND SELECTION>GSM BAND OR WCDMA BAND
important...
1. hit your conty carier network band. others not working eg, sri lanka gsm band is 900/1800. wcdma 2000
2, dont hit any other options. if hit you may broke your rom.
3. befor you going to flash another rom first hit the band to automatic
UMTS>DEBUG SCREEN>PHONE CONTROL>NETWORK CONTROL>BAND SELECTION>automatic
if you help this advice just hit the thanks button.
Click to expand...
Click to collapse
It is easier to just type "*#2263#" in your dialer because it takes you directly to the network selections you are referring to.
Sent from my SAMSUNG-SGH-I747

Some carriers use restrictions (RAT restrictions) to prevent this.

mrhaley30705 said:
Some carriers use restrictions (RAT restrictions) to prevent this.
Click to expand...
Click to collapse
In this case..such as with AT&T, you would dial *#197328640# and go to UMTS>DEBUG SCREEN>PHONE CONTROL>NETWORK LOCK>RAT_FREE_SUPPORTITNG ON (supporting is misspelled with the last T and I swapped around). After this you can use the OP method or from the dialer type *#2263# which takes you directly to the band selection options. Whenever I was running stock rom, I used this method all the time. The one catch with RAT restrictions is you have to redo the option to unlock the RAT every time you reboot.
There are four options under band selection: Automatic will allow for LTE, 3.5G, and 2G depending on what signals are available. However if you choose one of the other three options, it locks into that particular bandwidth. If you choose LTE you will only have data capabilities since LTE does not currently handle voice calls. If you move out of an LTE area, you will no signal. The same applies to all except for automatic which switches between bands as needed.
On the other hand if you are trying to disable LTE only, then there is a completely separate method of doing this (assuming that network preferences does not work). Create an APN and just name if Fake. Once created, enable it and exit and go to dialer. You will lose data, but this is only temp. You must wait about 25 seconds then dial *#*#4636#*#* and choose "Device Information". You will see a dropdown menu that says "WCDMA preferred". Change this to "GSM/CDMA auto (PRL) and exit. Go back to the APN settings and switch to the one that works for LTE. However, you will now only have 2g and 3g capability with LTE disabled. This will last until reboot, airplane mode, or an option is chosen from one of the dialer methods selected above (normally, the selected bandwidth under the dialer method contains a * next to it. When disabling LTE with the APN however, when you go into it none of these are annotated with the *. You are effectively "tricking" the phone to work the way you want it.)

Correct, and sometimes if you lose lte you can re select all the lte bands, then automatic, and you'll regain your lte

SCH-530U US Cellular on Tmobile 4G LTE (HELP)

While messing with the setting in the hidden Menu.
I unlock the T-Mobile LTE Network on My US Cellular GS3
Internet: T-Mobile US LTE
Band: LTE:14
Data Speeds 20mbps down 3.6 mbps up
Mms: Works Flawless
Now My Problem. i cant make a phone call or receive a phone call
My Setting
Hidden Menu: *#22745927
enable hidden menu
*#197328640#
[1] UMTS > DEBUG SCREEN > PHONE CONTROL > NETWORK CONTROL > BAND SELECTION to set GSM Band preference
[2] CDMA > COMMON > NEXT PAGE > NEXT PAGE > PREF MODE SET to select GSM/WCDMA ONLY
SIM>TEST CSIM
WAIT 90 SECONDS THE REBOOT
VOILA! TMOBILE LTE.
Now i have succesfully unlock The Verison GS3 to Tmobile on Edge is there a way to port that radio. to get cell connectivity.
or if anyone want to try to tweak these settings to get more than just LTE connection. or get Voice over LTE working!

I do believe that you need the HSPA radio to make phone calls as T-Mobile does not yet support VoLTE.
http://support.t-mobile.com/docs/DOC-5627

What are you doing for apn setting? There are 3 for tmo-us that I know of. 1)gsm 2)lte 3)lte ipv6. You may have to down load an apn app. Apn manager pro worked well for me or offline sim apn database. Not sure what you use for network mode settings but use build prop editort open it up and find the settings telephony.lteoncdmadevice & telephony.lteongsmdevice use value 1 on both. Add lines if not there. This may open up more network types under setting/...network mode. Google build prop edit or tweaks to find more info. Good luck.

i535 radio/modem
Been thinking about you question to swap modems. Do not use the i535. The modem that would be ideal I believe is the r530m. That is metro PC variant. T-Mobile merged with the.... Do I need to explain more? Any how I can not say it will even work. I will say that T999L is no good. Found out first hand and still dead in the water with it. I would explore the APN settings and network selection modes with build prop mods before flashing. I am not even sure about the LTE bands and who has what and where. If I am able to revive my 530u I will see what I can find.

Where can I get the r530m modem? Can't find it anywhere.

mjstallion said:
Where can I get the r530m modem? Can't find it anywhere.
Click to expand...
Click to collapse
I'm also stuck, bumping an old thread but I need to figure this out

Testicopolicious said:
I'm also stuck, bumping an old thread but I need to figure this out
Click to expand...
Click to collapse
So, is it possible to flash the R530M modem????

Note 7 Service Mode?

I've scoured the internet for finding out to enter the service menu on the note 7. It seems that the s7 and s7e have been figured out, but no one yet seems to have been able to actually enter the service mode the note 7.
I do know that the service mode application opens if one dials: *#0011#, but I cannot enter further into the application to change LTE bands and what not.
In past Samsung phones, one could further enter the service mode by hitting:
Menu -> back
Menu -> key input -> Q
Menu -> key input -> 0000
Wait 10 seconds
This method does NOT work on the note 7...
Now while this may be a larger issue, I cannot get AT&T LTE enabled on my device. I have the N930-FD from Singapore. This is why I'm trying to access this hidden menu.

On key input type in: Q0
And wait 10 secs.

Still not working.
While I follow the procedure, there is no response. It still display the network information.
What is the whole procedure to operate?

Did you have any finding regarding how to change LTE bands?

Does this work?
bands engineering screen *#2263#

Force 4G only.

Is there any way we can force cellular network to be 4G LTE only? I want to stop it from automatically switching to H+.
I'm on stock nougat, rooted.

I think you can change it in the hidden service menu. BUT be VERY CAREFUL not to change other things in there.
First make sure your preferred network type is LTE auto, not 3g or 2g only.
Next, go to phone / dialer app.
Enter: *#*#4636#*#*
It should automatically direct to Testing menu, with Phone information, Usage statistics, and Wi-Fi information choice.
Select "Phone information".
Warning: There's many things to see here, but you can easily ruin your radio band in here. Just follow this guide and do not even touch other things.
Go to "set preferred network type"
I'm not sure what it would show for your phone, but for mine it shows "LTE/UMTS auto (PRL)".
Select "LTE only". It should immediately reset your network to 4G.
If it still switches to 3G, then test other options in the "set preferred network type" option.
After finish, exit the hidden menu and clear it from recent apps menu.
Warning: DO NOT CHANGE OTHER VALUES IN THERE IF YOU DON'T KNOW WHAT YOU'RE DOING. IT COULD RUIN YOUR RADIO BAND IF YOU'RE NOT CAREFUL.

Thanks. It worked.

Samsung Note 10+ Signal Fix Sprint (If Needed)

1.)Remove third party potential threating apps just to be sure.
2.)Always make sure the phones up to date on the latest firmware.
3.)The next step is to go to the dialer ##72786# that forces the phone to reactivate.
4.)Next step go back to the dialer and dial ##3282#
4.2)Go to edit
4.3)Then type 000000
4.4)Then go to LTE
4.5)Then go to band 41 that is enabled and uncheck to disable.
4.6)Then go to band 25 that is enabled and uncheck to disable.
4.7)Then go to band 41PCII that is enabled and uncheck to disable.
5.)Reboot the phone don't expect full LTE service yet there are still some more steps...
6.)Go to settings find VOLTE and enable. Search VOLTE in the search bar to enable it.Swipe right on the button to turn it on. New icon will pop up at the top of the phone if done correctly.
7.)Then go back to the dialer and type ##3282#
7.2)Go to edit
7.3)Then type 000000 again
7.4)Then LTE again
7.5)Then go to band priority
7.6 & 7.7)Set both bands 41 and 25 to the bottom of the list by typing the number 17 on band 25 and 18 on band 41 and that pushes them down the list. Make sure band 26 is set to 1 on the priority list.
7.8)Then turn off your phone and turn it back on.
This fix is broken from a network reset or ##72786# update or Samsung software update. So reapply the fix after each update or network reset

Howeitworks said:
1.)Remove third party potential threating apps just to be sure.
2.)Always make sure the phones up to date on the latest firmware.
3.)The next step is to go to the dialer ##72786# that forces the phone to reactivate.
4.)Next step go back to the dialer and dial ##3282#
4.2)Go to edit
4.3)Then type 000000
4.4)Then go to LTE
4.5)Then go to band 41 that is enabled and uncheck to disable.
4.6)Then go to band 25 that is enabled and uncheck to disable.
4.7)Then go to band 41PCII that is enabled and uncheck to disable.
5.)Reboot the phone don't expect full LTE service yet there are still some more steps...
6.)Go to settings find VOLTE and enable. Search VOLTE in the search bar to enable it.Swipe right on the button to turn it on. New icon will pop up at the top of the phone if done correctly.
7.)Then go back to the dialer and type ##3282#
7.2)Go to edit
7.3)Then type 000000 again
7.4)Then LTE again
7.5)Then go to band priority
7.6 & 7.7)Set both bands 41 and 25 to the bottom of the list by typing the number 17 on band 25 and 18 on band 41 and that pushes them down the list. Make sure band 26 is set to 1 on the priority list.
7.8)Then turn off your phone and turn it back on.
This fix is broken from a network reset or ##72786# update or Samsung software update. So reapply the fix after each update or network reset
Click to expand...
Click to collapse
Why are you telling people to put b26 as highest priority. And put b41 as the lowest? B26 is 5×5 for the lowest spectrum and up to 10x10 or maybe 15×15.
While b25 is lowest 10×10 and up.
B41 is maybe TDD 20mhz/40mhz/60mhz up to 160mhz
B41 is really fast.
Its better to let ##scrtn# do the reprogramming and activate the sprint service and leave everything the way it was.
Changing priority or disabling the lte bands do not help the signal fix.
Only power users would put the b41 as the highest priority to have the highest speed. I guess you dont like sprints b41?

sunmybun said:
Why are you telling people to put b26 as highest priority. And put b41 as the lowest? B26 is 5×5 for the lowest spectrum and up to 10x10 or maybe 15×15.
While b25 is lowest 10×10 and up.
B41 is maybe TDD 20mhz/40mhz/60mhz up to 160mhz
B41 is really fast.
Its better to let ##scrtn# do the reprogramming and activate the sprint service and leave everything the way it was.
Changing priority or disabling the lte bands do not help the signal fix.
Only power users would put the b41 as the highest priority to have the highest speed. I guess you dont like sprints b41?
Click to expand...
Click to collapse
Yeah i get 250mbs on 41 in my hood

sunmybun said:
Why are you telling people to put b26 as highest priority. And put b41 as the lowest? B26 is 5×5 for the lowest spectrum and up to 10x10 or maybe 15×15.
While b25 is lowest 10×10 and up.
B41 is maybe TDD 20mhz/40mhz/60mhz up to 160mhz
B41 is really fast.
Its better to let ##scrtn# do the reprogramming and activate the sprint service and leave everything the way it was.
Changing priority or disabling the lte bands do not help the signal fix.
Only power users would put the b41 as the highest priority to have the highest speed. I guess you dont like sprints b41?
Click to expand...
Click to collapse
There are some areas to where b41 and b25 does not work well in rural areas like in WV for example, if people have roaming issues this fix does work. This helps with battery life. That is why I said (IF NEEDED).

Howeitworks said:
There are some areas to where b41 and b25 does not work well in rural areas like in WV for example, if people have roaming issues this fix does work. This helps with battery life. That is why I said (IF NEEDED).
Click to expand...
Click to collapse
You didnt state this is for rural areas anywhere. It seemed like you meant for all sprint users. Because people like me that live in big cities can use it the wrong way.
Also the sprint phones already have #1 25 #2 26 #3 41 priority as default.
B25 is nationwide and is faster than b26 anyway. The phone and the towers will load balance the service accordingly. So its best to leave it as is.
I think where sprint doesnt have good coverage, im sure most people wont be with sprint at that area. There are smaller carriers that have better coverage for some areas.
For roaming, theres a limit of how much you can roam and it differs by each plan and to whom you roam to.
For me it is 300MB for all carriers except tmobile.
Ive been to rural areas in my state. If i dont have any sprint bands to connect to or have very weak signal, I roam to a diff carrier like US Cellular by itself. You may think itll save battery to change priorities but its the same because it will always want to connect to sprint first.
I just dont want sprint users to take this and lose some of the great benefits of B41.
And also there are some areas that do B25 + B25 carrier aggregation.

This was an issue with the S10 and S10+...I have permanent data loss on.my S10+..little to poor reception away from my wifi...got run around trying to replace it..but got greate deal on trade in for note 10 +...v
I hope I do not have the same issue like this..or will return the phone and go with something else..dare I say even an iphone if I have to

Howeitworks said:
1.)Remove third party potential threating apps just to be sure.
2.)Always make sure the phones up to date on the latest firmware.
3.)The next step is to go to the dialer ##72786# that forces the phone to reactivate
Click to expand...
Click to collapse
Stop here on my SM-N976N, dialing ##72786# nothing happens.
Maybe someone could help me: I'm on Vodafone, no more VoLTE calls since upgraded from Note 9 no brand to actual model.
VoLTE is active, no doubt.
Tried with another SIM from other carrier: VoLTE logo appeared and eveything works fine.
Any suggest?

vysus said:
Stop here on my SM-N976N, dialing ##72786# nothing happens.
Maybe someone could help me: I'm on Vodafone, no more VoLTE calls since upgraded from Note 9 no brand to actual model.
VoLTE is active, no doubt.
Tried with another SIM from other carrier: VoLTE logo appeared and eveything works fine.
Any suggest?
Click to expand...
Click to collapse
lol.. this thread is clearly for sprint users or ppl using their device on sprint with sprint csc..
if the dialer code doesnt work for u then its not allowed by ur carrier/csc.. that or u can enable it after rooting or by changing ur csc

Yep, I can read since I was a child, but this is a forum so it's normal to ask.
Thanx for your answer, the SM-N978N must be NOT bought, definitely.

vysus said:
Yep, I can read since I was a child, but this is a forum so it's normal to ask.
Thanx for your answer, the SM-N978N must be NOT bought, definitely.
Click to expand...
Click to collapse
i am glad u can read lol.. its ok tho, ppl try to hijack threads since the beginning of the internet lol

vysus said:
Stop here on my SM-N976N, dialing ##72786# nothing happens.
Maybe someone could help me: I'm on Vodafone, no more VoLTE calls since upgraded from Note 9 no brand to actual model.
VoLTE is active, no doubt.
Tried with another SIM from other carrier: VoLTE logo appeared and eveything works fine.
Any suggest?
Click to expand...
Click to collapse
Well let me tell ya my situation that I'm dealing with maybe we can help each other! Okay so I also have a note 9 N960U that I also can not get VOLTE, the issue is that Sprint never integrated a APK that gives me the VOLTE feature in the Pie Update, but in Oreo they DID. So I wonder if its because of the Android Update and the Vodafone doesnt support VOLTE on the current Android Build that you are on. Its like when Microsoft took DVD Maker of Windows 7 out when you updated to Windows 8 8,1 or 10. I'm trying to get more information and if I come across some more information on XDA to help your cause I will let you know.

I am on sprint. Followed this to the T and got the screenshot of the slow speeds. Followed steps 1-3 to reset the data and got the fast speeds. Not sure about your priority but I guess it can't hurt to try and see if it works for you. You can always reset if it is slow.
Sent from my SM-N975U1 using Tapatalk
View attachment 4881121View attachment 4881125

i think OP should change the threads' titles reared towards rural people. people take your advice and use it for other ways.
you are spreading wrong info. do you know that you can roam on tmobile lte? it is better than having no lte or just ehrpd.
stop spreading nonsense