manual band locking and carrier aggregation - Samsung Galaxy A71 Questions & Answers

Good day . Just want to ask help how can I manually select band(s) in samsung a71? It has only auto detection of bands and default carrier aggregate.
What I want is manual selection of bands and locking 3 bands because I assume samsung A71 is capable of 3cc or 3 band carrier aggregation.
Thank you and more power. Hoping to hear from you soon.

Here is listed of supported Carrier Aggregation combinations:
US-model: https://cacombos.com/device?model=SM-A716U
EU-model: https://cacombos.com/device?model=SM-A715F
US-model doesn't support Carrier Aggregation with B3.

May work
beloybilly said:
Good day . Just want to ask help how can I manually select band(s) in samsung a71? It has only auto detection of bands and default carrier aggregate.
What I want is manual selection of bands and locking 3 bands because I assume samsung A71 is capable of 3cc or 3 band carrier aggregation.
Thank you and more power. Hoping to hear from you soon.
Click to expand...
Click to collapse
This may work for band selection, install Activity Launcher by Adam Szalkowski, search for hiddennetworksetting, found under Calls, long press to create shortcut or just select it to launch it. Once lauched, select the menu, select Band Selection, select the bands you want then toggle on the Selection toggle.

Related

SM-G906S (S805) -- ACTIVATE LTE on AT&T

I am on AT&T and the reason I bought this phone was because, according to the specs in the FCC site, it has LTE Band 17 (which is the most common one for AT&T).
I was only getting 3G (HSPA+) speeds. I followed the following procedure to enable LTE for data and still be able to place/receive phone calls:
Do this at your own risk
Open the dial pad
Type: *#0011# to enter Service Mode (Be very careful with what you do here)
Note: You need to be rooted for this to work
Once in Service Mode, do the following:
Tap the menu button and tap Back
Tap the menu button again and select "Key Input" and enter an upper case Q and press OK
Tap the menu button again and select "Key Input" and enter 4 zeroes (0000) and press OK
Wait from 5 to 15 seconds. You'll see the Main Menu
Choose option [2]: UE SETTING & INFO
Choose option [1]: SETTING
Choose option [1]: PROTOCOL
Choose option [2]: NAS
Choose option [1]: NETWORK CONTROL
Choose option [4]: BAND SELECTION
Choose option [4]: LTE Band Preference
Choose option [7]: LTE ALL (Or you can choose band 17 instead)
Tap the menu button and choose Back (Don't press the back key)
Tap again the menu button and choose Back
Choose option [6]: LTE/WCDMA Mode Only
Press the back key to exit
And that's it: You now have LTE and calls if using AT&T. This won't work with TMobile.
If you reboot your phone, you may need to repeat the steps.
miscom said:
I am on AT&T and the reason I bought this phone is because, according to the specs in the FCC site, it has LTE Band 17 (which is the most common one for AT&T).
I was only getting 3G (HSPA+) speeds. I followed the following procedure to enable LTE for data and still be able to place/receive phone calls:
Do this at your own risk
Open the dial pad
Type: *#0011# to enter Service Mode (Be very careful with what you do here)
Note: You need to be rooted for this to work
Once in Service Mode, do the following:
Tap the menu button and tap Back
Tap the menu button again and select "Key Input" and enter an upper case Q and press OK
Tap the menu button again and select "Key Input" and enter 4 zeroes (0000) and press OK
Wait from 5 to 15 seconds. You'll see the Main Menu
Choose option [2]: UE SETTING & INFO
Choose option [1]: SETTING
Choose option [1]: PROTOCOL
Choose option [2]: NAS
Choose option [1]: NETWORK CONTROL
Choose option [4]: BAND SELECTION
Choose option [4]: LTE Band Preference
Choose option [7]: LTE ALL (Or you can choose band 17 instead)
Tap the menu button and choose Back (Don't press the back key)
Tap again the menu button and choose Back
Choose option [6]: LTE/WCDMA Mode Only
Press the back key to exit
And that's it: You now have LTE and calls if using AT&T. This won't work with TMobile.
Click to expand...
Click to collapse
I am confused. I am also on ATT - I bought this phone back when it first came out. All I did was add the ATT APN and then I was able to get LTE just fine. I didn't have to do anything like you described.
So - are you saying you added your APN and still had to go thru all of those steps?
mocsab said:
I am confused. I am also on ATT - I bought this phone back when it first came out. All I did was add the ATT APN and then I was able to get LTE just fine. I didn't have to do anything like you described.
So - are you saying you added your APN and still had to go thru all of those steps?
Click to expand...
Click to collapse
Yes, that's exactly what happened to me. For some reason B17 was not enabled in my phone.
miscom said:
Yes, that's exactly what happened to me. For some reason B17 was not enabled in my phone.
Click to expand...
Click to collapse
That brings up another question - If I am getting LTE now - does that mean I am already getting data via that Band you mentioned ? Or could it be that I am getting it from some other band? (forgive these noobie type questions - I really don't know that much about this)
and is there a difference between the speeed you can get from any of the different bands?
mocsab said:
That brings up another question - If I am getting LTE now - does that mean I am already getting data via that Band you mentioned ? Or could it be that I am getting it from some other band? (forgive these noobie type questions - I really don't know that much about this)
and is there a difference between the speeed you can get from any of the different bands?
Click to expand...
Click to collapse
Try this free app to show you what LTE band you are using
https://play.google.com/store/apps/details?id=net.simplyadvanced.ltediscovery
Most likely if you are on AT&T is band 17.
The higher the frequency the most difficult it is for the signal to travel farther or into building. You'll better results if you are receiving on 700MHz than 2600MHz, but that is determined by your carrier (although there are ways to manually change it)
Yup my AT&T LTE bands weren't activated as well. Had to go through these steps and they worked perfectly!
miscom said:
Try this free app to show you what LTE band you are using
https://play.google.com/store/apps/details?id=net.simplyadvanced.ltediscovery
Most likely if you are on AT&T is band 17.
The higher the frequency the most difficult it is for the signal to travel farther or into building. You'll better results if you are receiving on 700MHz than 2600MHz, but that is determined by your carrier (although there are ways to manually change it)
Click to expand...
Click to collapse
Thanks for the informatino - I had no idea that some phones had problems connecting to LTE - I personally never have had that issue with any of the TMOBILE PHONES i have used on ATT (Note 3 and my S5) but its good to know this in case it ever happens with a future phone.
anyway, for grins and gigglesI got the app suggested - but I can't see in the app where it says what band I am using?
I attached a screen shot - can you tell me what I should be looking for?
mocsab said:
Thanks for the informatino - I had no idea that some phones had problems connecting to LTE - I personally never have had that issue with any of the TMOBILE PHONES i have used on ATT (Note 3 and my S5) but its good to know this in case it ever happens with a future phone.
anyway, for grins and gigglesI got the app suggested - but I can't see in the app where it says what band I am using?
I attached a screen shot - can you tell me what I should be looking for?
Click to expand...
Click to collapse
Sorry, I gave you the wrong information. Just go into the service mode menu. It's there on the first page.
From the dial pad: *#0011#
miscom said:
Sorry, I gave you the wrong information. Just go into the service mode menu. It's there on the first page.
From the dial pad: *#0011#
Click to expand...
Click to collapse
Thanks - Got it - and you were right, Band 17
Hey Miscom. Thank you for the post. I am considering this phone. I am wondering if this phone is fully compatible with all LTE At&t bands? I copied the At&t band info from a post on another forum and pasted it below. I assume that it is correct.
At&t LTE Bands
4G HSPA and HSPA+ use 850Mhz(Band 5) and 1900Mhz(Band 2) bands but it all depends on area if they own a license. LTE uses Band 17(700Mhz), Band 5(850Mhz), Band 2(1900Mhz), Band 4(1700/2100Mhz) currently.
It appears that Band 4(1700/2100) is missing from the SM-G906S specs.
SM-G906S LTE Bands (Source: http://28mobile.com/Product/View/68834/samsung-galaxy-s5-prime-lte-a-sm-g906s-k-32gb-black-4g/)
Infrastructure 4G LTE
2G GSM GSM900, DCS1800, PCS1900
3G UMTS B1 (2100), B2 (1900), B5 (850)
4G LTE B1 (2100), B3 (1800), B5 (850), B7 (2600), B17 (700)
jinksd said:
Hey Miscom. Thank you for the post. I am considering this phone. I am wondering if this phone is fully compatible with all LTE At&t bands? I copied the At&t band info from a post on another forum and pasted it below. I assume that it is correct.
At&t LTE Bands
4G HSPA and HSPA+ use 850Mhz(Band 5) and 1900Mhz(Band 2) bands but it all depends on area if they own a license. LTE uses Band 17(700Mhz), Band 5(850Mhz), Band 2(1900Mhz), Band 4(1700/2100Mhz) currently.
It appears that Band 4(1700/2100) is missing from the SM-G906S specs.
SM-G906S LTE Bands (Source: http://28mobile.com/Product/View/68834/samsung-galaxy-s5-prime-lte-a-sm-g906s-k-32gb-black-4g/)
Infrastructure 4G LTE
2G GSM GSM900, DCS1800, PCS1900
3G UMTS B1 (2100), B2 (1900), B5 (850)
4G LTE B1 (2100), B3 (1800), B5 (850), B7 (2600), B17 (700)
Click to expand...
Click to collapse
You are correct: Band 4 is missing. For AT&T only band 17 is available in the G906S.
Band 17 is the main LTE band for AT&T. I traveled by car a few days ago from Tennessee to New York and except for a few places, I got LTE most of the time. Never saw E, only 3G (AT&T's 4G) and LTE.
Same here I have LTE pretty much 99% everywhere I go. I'm on AT&T as well.
That is good news. Do you guys know if there will be ROM support by cyanogen for this phone?
Also. Where did you guys get yours?
jinksd said:
That is good news. Do you guys know if there will be ROM support by cyanogen for this phone?
Also. Where did you guys get yours?
Click to expand...
Click to collapse
I bought mine from 28mobile.com
Hi all,
Considering buying the G906S from 28Mobile,
I am on T-Mobile though, Is there any way to make the LTE work?
No
neilspenta said:
Hi all,
Considering buying the G906S from 28Mobile,
I am on T-Mobile though, Is there any way to make the LTE work?
Click to expand...
Click to collapse
chungdae said:
No
Click to expand...
Click to collapse
Thanks for the prompt reply.
I know for a fact that the G906S and K do not work with T-Mobile. I don't know the band's for L, it might be compatible.
neilspenta said:
Thanks for the prompt reply.
Click to expand...
Click to collapse
mocsab said:
I am confused. I am also on ATT - I bought this phone back when it first came out. All I did was add the ATT APN and then I was able to get LTE just fine. I didn't have to do anything like you described.
So - are you saying you added your APN and still had to go thru all of those steps?
Click to expand...
Click to collapse
What APN did you use?
I found this on AT&T official website,
Your device will need to work on one of these GSM network frequencies:
AT&T Multi-band GSM
UMTS, LTE or unlocked Multi-band GSM - 850/1900 MHz
UMTS - 850/1900 MHz
LTE Band 2 - 1900 MHz
LTE Band 4 - 1700 MHz
LTE Band 5 - 800 MHz
LTE Band 17 - 700 MHz

Mi 5 Carrier aggregation support

Hello all,
I recently changed my phone carrier, and I noticed phone doesn't go in LTE+ mode anymore. Apparently, the phone is able to aggregate band 3 and 1, which was the combination my previous carrier was using, but not 3 and 7.
I read a bit around, and found out some useful discussion here:
http://en.miui.com/forum.php?mod=redirect&goto=findpost&ptid=392070&pid=10016974
which gave me the opportunity to understand how to set the carrier aggregation on different bands, and avoid to add any combination on band 7 which apparently isn't managed properly.
So, I used QXDM to change the nvram values on band 3 CA (default is 5, which is band 3+1 aggregation), and my phone was able to aggregate 3+7 bands, but that leads to a loop between LTE+ and LTE, which ends with phone in H.
After reverting the changes, phone goes normally in LTE.
Is there any way to enable Carrier aggregation on Mi 5, on combinations not originally present in the firmware? Or does Mi 5 lack the hardware to do so?
[email protected] said:
Hello all,
I recently changed my phone carrier, and I noticed phone doesn't go in LTE+ mode anymore. Apparently, the phone is able to aggregate band 3 and 1, which was the combination my previous carrier was using, but not 3 and 7.
I read a bit around, and found out some useful discussion here:
http://en.miui.com/forum.php?mod=redirect&goto=findpost&ptid=392070&pid=10016974
which gave me the opportunity to understand how to set the carrier aggregation on different bands, and avoid to add any combination on band 7 which apparently isn't managed properly.
So, I used QXDM to change the nvram values on band 3 CA (default is 5, which is band 3+1 aggregation), and my phone was able to aggregate 3+7 bands, but that leads to a loop between LTE+ and LTE, which ends with phone in H.
After reverting the changes, phone goes normally in LTE.
Is there any way to enable Carrier aggregation on Mi 5, on combinations not originally present in the firmware? Or does Mi 5 lack the hardware to do so?
Click to expand...
Click to collapse
I dont really have the technical knowledge, but if you look at some of band 1 configs, there's a few values that are set for carrier aggregation that are not set for other bands. I think we need to configure a few more things than just enabling the CA values. Been trying to figure this out for some time. Too bad i don't have any other phone with proper ca support to compare
does the *#*#717717#*#* only works in MIUI ? currently using OMNI rom
gingerboy92 said:
I dont really have the technical knowledge, but if you look at some of band 1 configs, there's a few values that are set for carrier aggregation that are not set for other bands. I think we need to configure a few more things than just enabling the CA values. Been trying to figure this out for some time. Too bad i don't have any other phone with proper ca support to compare
Click to expand...
Click to collapse
There are some, only usable one in Italy is on band 3, it aggregates 3 and 1, but is really rare operators use this config.
You can enable the engineering mode with adb

Note 8 (SM-N950F) Lock network BAND

Hi guys,
I have rooted my note 8 with deluxe ROM to access hidden network setting option to lock specific band of network. As we know that, Hidden network setting option is disabled by Samsung but, I rooted my device and download apk of hidden network setting and placed in system with help of root explorer. Everything went perfect. Now, I can access section where i can select specific band and lock it. I access it with Shortcut Master Lite. But, When i tick on specific band and toggle the selection button then it shows message success. Immediately my network change to my selected band. I can check from *#0011#. But, if my phone remain in stable state for few seconds then it automatically switch to another band. Which mean it didn't lock to specific Band. When i go back to hidden network setting, there is no tick on my selected BAND but toggle but still says that i am on selected band option instead of LTE ALL. I am using India Jio Sim card which support Band 3, 5 and 40. I get very good internet speed on 3 and 5. But, It automatically switch to Band 40 when its remain in stable state.
I want to lock it to Specific band only. Can you help regarding it. I am using deluxe ROM with Android 9.
Thanks
inder
Hello, were you able to fix this problem ?
Am going through the same atm
I'm facing the same issue on my N950F. Don't understand why samsung locked this on the Note 8, most new phones allow this setting. Any way to work around this with root ??
Edit: this is what worked for me https://forum.xda-developers.com/t/how-to-lock-lte-band.3681480/#post-74325453
TL;DR: Get org.vndnguyen.phoneinfo (no longer available on the play store), and run ServiceMode as root. Follow the guide above to disable unwanted LTE bands. Finally a solution that works for devices which Samsung disabled the "Band Selection" menu method (blue background issue).

LM-V405EBW Q - enable US LTE Bands?

Most of us know there is a SVC menu we can get to that gives the ability to select LTE bands to enable. I'm wondering if anyone in the US has lgup the EBW rom and then enabled the US LTE bands?
While it's easy enough to get to the menu and click 'enable', the question is does it actually work? Are those bands then actually enabled? The only way to be sure of this is to use (something like) LTE Discovery, which will tell you what LTE band you are using with a tower at that time.
The EBW firmware doesn't list the bands I need for T-mo, so just wondering if anyone has actually been able to enable them?

Question How to lock the Mi11 LTE bands

Hi ,
As I know, the mi11(M2011K2C) only support band28a, but my operater not support that.
I found when the LTE change to band28(LTE 700), the mi11 is swap from LTE to 3G(WCDMA).
May I disable the band? How to do that?
Thanks.
DevenLin said:
Hi ,
As I know, the mi11(M2011K2C) only support band28a, but my operater not support that.
I found when the LTE change to band28(LTE 700), the mi11 is swap from LTE to 3G(WCDMA).
May I disable the band? How to do that?
Thanks.
Click to expand...
Click to collapse
Go to settings- about- all specs- tap the internal memory until it opens the network test page- go to set prefer network type and choose the network types you want to have.
Or by Dial *#*#4636#*#*
Usefull for check connectivity, Dual Sim, IMS, etc...
Hi,
Thanks for the reply.
But in this method, only LTE can be selected, and the band in LTE cannot be selected.
Download activity launcher>phone services>set radio band mode(choose the 2nd one coz there's 2 radio band mode in results).

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