Unlocking All LTE Bands - TCL 10 Pro Guides, News, & Discussion

One day it crossed my mind that this is a OEM based rom after all and it should have secret dialer codes. So what did I do? I downloaded and app from Google Play called Secret Codes by Itools Network. The app lists all secret codes by manufacturer but I wanted to know TCL Secret codes. On the top right of the app is a # symbol. Tap it and you will see all the devices secret codes.
"Proceed at own risk, I am not responsible if you mess up your device!"
Dialer Secret secret code *#*#7862732#*#* brings up the UI for ARDA the com.tct.cellular.arda apk.
Depending if you have a T799B or T799H (dual sim version) you might have different LTE Bands set by default. On USA T799B variant: default selected bands are 1, 2, 3, 4, 5, 7 , 8, 12, 13, 17, 25, 26, 28, 38, 40, 41. The box of the phone mentions band 66 but as you can see you will not see it in the menu for some reason.
Navigate to:
Antenna and RF > LTE Band Selection
Enjoy your new unlocked LTE bands. Once you exit the menu the settings should stay.
I still have to test this myself, an app I recommend: LTE Discovery for google play, it will show you what LTE Band you are on. From here on you can enable logging mode which will keep a log in the background as of what lte band you are connected to.
Screen recording:
LTE Band Selection
MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.
www.mediafire.com
Good luck!

That's an awesome find!

Related

[Honor 9N] How to enable LTE only option in settings.

Honor 9N is a latest budget phone from Huawei Honor.
For Indian customers, it comes with network settings as 4 options ( LTE/WCDMA/GSM Auto), (WCDMA, GSM Auto), (WCDMA only) and (GSM only).
While the network signal is weak we don't get LTE band as it jumps down to the lower signal WCDMA or GSM.
Here I will explain how to enable LTE only option in settings.
Steps:
Download the app : Settings database editor
Scroll down and look for "hw_networkmode_preference" and change its value from "9,3,2,1" to "9,3,2,1,11". save it.
Then restart your device.
Now the LTE only option will be available in Settings > Mobile Network.
Remember one thing : You will no longer receive or make a call when you are in LTE only signal. It's because only Jio supports 4G calls (VoLTE).
If you are using any other Network Service like Vodafone In, Idea... Etc, use LTE only option only when it's needed and change into ( LTE/WCDMA/GSM Auto) later to receive calls.
Thanks.:victory:
Screen shot from my Honor 9N.
Values : 9,3,2,1,11,12
Gives :
LTE/WCDMA/GSM Auto
WCDMA/GSM Auto
WCDMA Only
GSM Only
LTE Only
LTE/WCDMA Auto
Changing LTE bands
I bought Honor 9N in India. To my disappointment, I cannot use it with T-Mobile in the U.S. Is there any way to change it? (Full confession: My knowledge of software/hardware is pretty poor)
Ahammed Danish said:
Honor 9N is a latest budget phone from Huawei Honor.
For Indian customers, it comes with network settings as 4 options ( LTE/WCDMA/GSM Auto), (WCDMA, GSM Auto), (WCDMA only) and (GSM only).
While the network signal is weak we don't get LTE band as it jumps down to the lower signal WCDMA or GSM.
Here I will explain how to enable LTE only option in settings.
Steps:
Download the app : Settings database editor
Scroll down and look for "hw_networkmode_preference" and change its value from "9,3,2,1" to "9,3,2,1,11". save it.
Then restart your device.
Now the LTE only option will be available in Settings > Mobile Network.
Remember one thing : You will no longer receive or make a call when you are in LTE only signal. It's because only Jio supports 4G calls (VoLTE).
If you are using any other Network Service like Vodafone In, Idea... Etc, use LTE only option only when it's needed and change into ( LTE/WCDMA/GSM Auto) later to receive calls.
Thanks.:victory:
Click to expand...
Click to collapse
You need to install this app for FREE
at Google Play
https://play.google.com/store/apps/details?id=com.teknokia.force4glteonly
pro version : https://play.google.com/store/apps/details?id=com.teknokia.force4glteonlypro
galaxy store: https://apps.samsung.com/appquery/appDetail.as?appId=com.teknokia.force4glteonly
pro version : https://apps.samsung.com/appquery/appDetail.as?appId=com.teknokia.force4glteonlypro

LTE 4G Band locking on Samsung devices Exynos / Qualcomm without root android 10

Dear friends, now you can lock LTE bands on your Samsung Exynos/Snapdragon devices running Android 10 without root. Here are the steps-
1. Open quickshortcutmaker app
2. Goto call settings and then goto last call settings
3. Goto band selection by clicking 3 dots and now your favorite band is selected.
To help you further you can watch in this video-
https://youtu.be/K-DN0q64lRw
if it helped let me know

Verizon sm-g950u1 band selection

I have rooted my s8 using the extreme syndicate method. I am trying to be able to switch bands. The hidden menu is blank and network signal guru is 50 a month. I have tried using shortcut maker, but it says i need privileges even though i have root. Can I unlock the hidden menu to access the band selection? Is there another app besides network guru that does this? I've tried samsung band selection and that does not work either.

Question How to enable 5G band 40

(base on GSMARENA)
This phone support the following 5G bands:
5G bands 1, 3, 28, 41, 77, 78 SA/NSA
however, my current phone sim need to utilize the Band 40, n257/n258 for 5G,
anyone know how to enable or activate these bands? Is there any MTK engineering software for this purpose?
kirinin said:
(base on GSMARENA)
This phone support the following 5G bands:
5G bands 1, 3, 28, 41, 77, 78 SA/NSA
however, my current phone sim need to utilize the Band 40, n257/n258 for 5G,
anyone know how to enable or activate these bands? Is there any MTK engineering software for this purpose?
Click to expand...
Click to collapse
I'd like to help but I'm not sure if the solution I would use would fit your needs and capabilities.
The (apparently secretly hidden) Android Activity it calls is apparently
com.samsung.android.app.telephonyui.hiddennetworksetting.MainActivity​Based on what a free google free ad free gsf free shortcut inspector says
Activity Inspector
Having said that, I can bring up the HIDDEN Activity that allows you to select the bands available on the phone by calling the activity directly.
C:\> adb shell am start -n com.samsung.android.app.telephonyui.hiddennetworksetting.MainActivity​
They even make apps that do that for you such as this one.
Network Mode Universal​
See my screenshots below for my phone.
Hope this helps.
GalaxyA325G said:
I'd like to help but I'm not sure if the solution I would use would fit your needs and capabilities.
The (apparently secretly hidden) Android Activity it calls is apparently
<com.samsung.android.app.telephonyui.hiddennetworksetting.MainActivity>​Based on what a free google free ad free gsf free shortcut inspector says
that, I can bring up the HIDDEN Activity that allows you to select the bands available on the phone by calling the activity directly.
They even make apps that do that for you such as this one.
Network Mode Universal​
See my screenshots below for my phone.
Hope this helps.
Click to expand...
Click to collapse
Thank you very much for your suggestion. I have tried all these and found:
Network mode universal - this is similar to *#*#4636#*#* for phone information.
Shortcut Widgets (+ Inspector), nothing shown in POCO X3Gt for band. it "maybe" work on your Samsung phone. Could not find any band information.
However, when get into *#*#3646633#*#* Developer option, it shows bands as attached photos, the Band 40 is greyed, no possible to enable it.
kirinin said:
Thank you very much for your suggestion. I have tried all these and found:
Network mode universal - this is similar to *#*#4636#*#* for phone information.
Shortcut Widgets (+ Inspector), nothing shown in POCO X3Gt for band. it "maybe" work on your Samsung phone. Could not find any band information.
However, when get into *#*#3646633#*#* Developer option, it shows bands as attached photos, the Band 40 is greyed, no possible to enable it.
Click to expand...
Click to collapse
My response will be in two posts because I don't want to confuse you with the response about "Shortcut Widgets" so I'll take that separately as it's really useful only as a final step.
As for the band B40 being grayed, out, that is a problem.
My only experience with this band selection is on my phone, where nothing that is listed is grayed out. That is, for example, I don't have Band B28 on the phone (AFAIK) but that band is not listed either.
What I have that is listed, as far as I know, can each be checked.
So the fact you can't check a band that is listed, is really, I think, the problem all of the users here have to put our heads together to figure out why that is the case.
I don't know why you can't select Band B40 even though it's listed.
I can only suggest tests you can run to perhaps figure out why.
a. Anyone else with the same phone could run that test for you.
(Let's hope someone with that same phone will see this request.)
b. Maybe you can try one or two other "band selection" apps?
(This would eliminate it being a bug in that specific program.)
c. But the real problem may simply be the phone hardware doesn't support that band.
(I don't know any way around that.)
GalaxyA325G said:
I don't know why you can't select Band B40 even though it's listed.
Click to expand...
Click to collapse
Ah. I think I figured out what I'm doing differently from you since *#*#4636#*#* doesn't work on my T-Mobile Samsung (we really need someone to test this using the same phone you have!).
My Samsung has its own app from that same outfit I referred you to
Network Mode Samsung​
I'm guessing that your "network mode universal" is (maybe) giving you a list of all possible bands but (maybe) not just the bands on your phone alone like my "network mode samsung" is apparently doing for me.
If you can find a network mode app for your specific phone, that may show just the bands you need... but... you already ran the *#*#4636#*#* dial-code to bring up the hidden activity I think... so you may already have seen that the dial-code you gave probably brought up only the bands which are available to you.
Hope this helps. I'm NOT an expert in this. I would hope others with the SAME phone as you have can confirm our suspicions or prove them wrong (better yet).
kirinin said:
Shortcut Widgets (+ Inspector), nothing shown in POCO X3Gt for band. it "maybe" work on your Samsung phone. Could not find any band information.
Click to expand...
Click to collapse
At this point you don't need Shortcut Widgets + Inspector, as it's only useful to find out what the hidden activity name is, and even then, you only need to know the name if you're going to create your own shortcut to bring it up.
It's useful mainly for HIDDEN activities, because once you know the name of a hidden activity, you can bring it up in a single click if you know what you're doing (you have to create a shortcut to it).
As far as I know, it's the ONLY APP in all of Android that does what it does (although others may exist) so it's a keeper, for sure; but it only tells you what you want to know AFTER you've already brought up the "activity".
An "activity", if you aren't aware of what that is, is kind of sort of like a "pseudo public page" inside any Android app, which can be brought up if you know the unique name of that activity.
There are something like three or four hundred public activities in the Android "Settings" app alone, while most apps have a few dozen or so public activities you can call up directly, which means there are about a thousand or so, which is why you might need an app that tells you what activities are brought up when you do stuff on the phone.
However, if you can ALREADY easily bring up the band-selection activity on your own, you won't need this app to tell you that so I'd ignore it for now. Sorry if I wasted your time.
Appreciate very much for your reply with detail explaination.
I believe this Dimensity 1100 is prebuilt with all bands when sold to each different phone company, however, MTK will price differently base on the the number of bands given (enabled), some companies may sell its phone with lesser bands so to lower its price to make it more competitive.
This problem is hardware problem, so it could only be done with MTK special engineering software or some special code to enable/disable them.
This is just my suspicion, I may be wrong....
kirinin said:
This problem is hardware problem, so it could only be done with MTK special engineering software
Click to expand...
Click to collapse
I agree.
I hope you find someone with the same phone who can try it to help. Or someone who knows the MTK software. Good luck!

Question 5G not working

I got this oppo and 5G not working (not even an option to select in sim options), i tried 3 different sims, no 5G.
I have the Vivo X Fold and 5G working great.
What can be the reason?
Look for Force LTE in the Play Store, open and select Method 2, then for your band selection scroll to the bands starting with NR.
I don't believe the changes stick after a reboot and I'm not sure we will get 5G speeds but since I have Mint (T-Mobile towers), I selected a band package with NR/LTE/GSM in it. So far I've learned NR=5G, LTE=4G, GSM=2G and I need GSM band for my calls to come through. There are many bands to choose from so play around with it but this was the ONLY way I was able to get 5G to show up in the notification bar on this phone.
Hope this helps!
I've noticed that 5ghz Wi-Fi networks are not detected on my find n no matter what I do. Only 2.4ghz networks show up. Is that normal?

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