Hello guys,
I'm using Mi9T Pro with Stock EU rom MIUI 12 version 12.0.4
I have this issue with Xiaomi regarding how the system handles prioritization of Network Band when it comes to using Mobile Data connection.
We know that we have options to prefer 4G, 3G or 2G. But it doesn't define which specific band. Like for example, 4G can be 4G/LTE or 4G+/LTE+. These 2 networks seem to be the same but these actually have different network bands
The question is how does Xiaomi system prioritize which band to select?
Does it prefer the one with higher signal or the one that pings better.
I have this question because as I have experienced, Xiaomi system seem to prefer the one with better signal regardless if it can't even pull any data. In short, it will keep connecting to a network with a better signal strength even if you won't get any internet connection out of it.
I've been noticing this when I set my phone to 4G preferred in my location. When signal indicator turns to 4G/LTE. It may seem to show you that you're connected to the internet but you can't really browse anything because there's actually no data for that band. But when it turns to 4G+, that's when I really get to connect to the internet.
And the biggest problem is that the system prefers to connect to the 4G band. That's why I'd prefer using 3G network because I have a more stable 3G+ signal here.
Another thing that's really disappointing is that my other phone OnePlus 5T handles this well. We share the same APN.
Sadly there's no band selection in *#*#4636#*#*
It would be glad if anyone could provide a better solution to this.
Thank you!
peeweew said:
We know that we have options to prefer 4G, 3G or 2G. But it doesn't define which specific band. Like for example, 4G can be 4G/LTE or 4G+/LTE+. These 2 networks seem to be the same but these actually have different network bands
...
I've been noticing this when I set my phone to 4G preferred in my location. When signal indicator turns to 4G/LTE. It may seem to show you that you're connected to the internet but you can't really browse anything because there's actually no data for that band. But when it turns to 4G+, that's when I really get to connect to the internet. ..
Click to expand...
Click to collapse
4+ g usually means (specially on Xiaomi phones) LTE Advanced Carrier Aggregation where no other/different bands are used but instead the phone is in parallel attached to more than one 4g band. As such, it increases the speed (and maybe, in your case provides a fail-over?!):
https://www.gizbot.com/mobile/featu...ifference-between-4g-4g-explained-053769.html
However, there is another question why (on that place) you have strong 4g signal with no Internet, so that when your phone switches to CA and in parallel attaches to another 4g band (maybe with a weaker signal) it obtains Internet connection over that second band
At least to better understand on which band (at which place and which base station) you have a 4g signal but with no Internet connection, install an app like Network Cell Info Lite, LTE Discovery, Net Monitor Lite). I think with Net Monster (all apps are on Playstore) you can even see on the map where is the base station you are attached to
If your phone is rooted, you could use Network Signal Guru that will show you, in case of 4+g all bands you are aggregated to with their signal strengths, base stations locations, etc (apps above would always show just one, primary band):
https://forum.xda-developers.com/mi-9t/help/monitoring-4g-advanced-aggregated-t4107967
zgfg said:
4+ g usually means (specially on Xiaomi phones) LTE Advanced Carrier Aggregation where no other/different bands are used but instead the phone is in parallel attached to more than one 4g band. As such, it increases the speed (and maybe, in your case provides a fail-over?!):
https://www.gizbot.com/mobile/featu...ifference-between-4g-4g-explained-053769.html
However, there is another question why (on that place) you have strong 4g signal with no Internet, so that when your phone switches to CA and in parallel attaches to another 4g band (maybe with a weaker signal) it obtains Internet connection over that second band
At least to better understand on which band (at which place and which base station) you have a 4g signal but with no Internet connection, install an app like Network Cell Info Lite, LTE Discovery, Net Monitor Lite). I think with Net Monster (all apps are on Playstore) you can even see on the map where is the base station you are attached to
If your phone is rooted, you could use Network Signal Guru that will show you, in case of 4+g all bands you are aggregated to with their signal strengths, base stations locations, etc (apps above would always show just one, primary band):
https://forum.xda-developers.com/mi-9t/help/monitoring-4g-advanced-aggregated-t4107967
Click to expand...
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Ohhh thank you for this explanation.... Someone actually mentioned aggregation to me also. This helps make me clear up how Xiaomi does this and that. Does this mean force selection of network band won't work on Xiaomi devices?
peeweew said:
Ohhh thank you for this explanation.... Someone actually mentioned aggregation to me also. This helps make me clear up how Xiaomi does this and that. Does this mean force selection of network band won't work on Xiaomi devices?
Click to expand...
Click to collapse
I'm pretty sure that with MIUI 11 there was an option to disable/enable 4+, but on MIUI 12 (12.0.2 QFJEUXM) there is no more that option
I don't know of other options (except to prefer 4, 3 or 2 g), specially about selecting bands
choose band mode
peeweew said:
Hello guys,
I'm using Mi9T Pro with Stock EU rom MIUI 12 version 12.0.4
I have this issue with Xiaomi regarding how the system handles prioritization of Network Band when it comes to using Mobile Data connection.
We know that we have options to prefer 4G, 3G or 2G. But it doesn't define which specific band. Like for example, 4G can be 4G/LTE or 4G+/LTE+. These 2 networks seem to be the same but these actually have different network bands
The question is how does Xiaomi system prioritize which band to select?
Does it prefer the one with higher signal or the one that pings better.
I have this question because as I have experienced, Xiaomi system seem to prefer the one with better signal regardless if it can't even pull any data. In short, it will keep connecting to a network with a better signal strength even if you won't get any internet connection out of it.
I've been noticing this when I set my phone to 4G preferred in my location. When signal indicator turns to 4G/LTE. It may seem to show you that you're connected to the internet but you can't really browse anything because there's actually no data for that band. But when it turns to 4G+, that's when I really get to connect to the internet.
And the biggest problem is that the system prefers to connect to the 4G band. That's why I'd prefer using 3G network because I have a more stable 3G+ signal here.
Another thing that's really disappointing is that my other phone OnePlus 5T handles this well. We share the same APN.
Sadly there's no band selection in *#*#4636#*#*
It would be glad if anyone could provide a better solution to this.
Thank you!
Click to expand...
Click to collapse
Download activity launcher (play store), run it
Search band mode ===> Set radio band mode
Choose band mode you need
uncomment said:
Download activity launcher (play store), run it
Search band mode ===> Set radio band mode
Choose band mode you need
Click to expand...
Click to collapse
This is what I was looking for.
Thanks!
Anyone who owns the Chinese version of the mi 11 ultra can test it out?
I got 5g enabled in the settings, confirmed selected in the dialer menu *#*#4636#*#* top bars say 5G and an HD symbol on its left which I confirmed is Vo-lte...
Issue is it's not really 5g but LTE or 4g, how I came to this conclusion was by running various apps/ simultaneous 5g speed tests on both this phone and an older Huawei phone I got..
Mi 11 ultra caps at 140+- dl speeds
Huawei caps at 500+- dl speeds
Provider runs 5g on band n78 which is supported by both phones..
Can running the Eu ROM fix this issue for me?
https://forum.xda-developers.com/t/...-xiaomi-mi-11-pro-ultra.4260617/post-84978259 Happen to me in xiaomi.eu STABLE. In China ROM probably it's a standard fake 5G icon, when connected to 4G/LTE network..
veimus said:
https://forum.xda-developers.com/t/...-xiaomi-mi-11-pro-ultra.4260617/post-84978259 Happen to me in xiaomi.eu STABLE. In China ROM probably it's a standard fake 5G icon, when connected to 4G/LTE network..
Click to expand...
Click to collapse
Thanks for forwarding me there, guess all I can do is try it out and hope for the best otherwise a 12gb/512 is up for sale
n78 is 3.5 GHz 5G band (is wiiide band, is not a 600hz band lmao) Your phone preferred to stay connected to 5G bands more than 4G bands.
Try to switch to 4G network preferred
And check it out your actual speed on 4G
(Huawei supports more bands than xiaomi...due to different processor which is Kirin)
avetny said:
n78 is 3.5 GHz 5G band (is wiiide band, is not a 600hz band lmao) Your phone preferred to stay connected to 5G bands more than 4G bands.
Try to switch to 4G network preferred
And check it out your actual speed on 4G
(Huawei supports more bands than xiaomi...due to different processor which is Kirin)
Click to expand...
Click to collapse
Hello everyone,
I've just upgrade my plan to have 5G support, but the phone does't pick it up ( the carrier says it's ok )..
I also searched manually for networks and I find every network even from other provider but NOT a single one with 5G.
obviously I am in a 5G area, center of Milan, and sim slot 1 ( but I recall that was dual 5G, no? )
It's a bug, broken or I played with some setting disabling 5G?
thanks
EDIT: SEEMS LIKE THAT switching preferred types, airplane mode, while outdoor made the phone to connect t o a 5G antenna...
funny note, it's slower that 3g: 5.69mps/0.59mbps
Might need to enable it
speedtripler said:
Might need to enable it
Click to expand...
Click to collapse
you mean preferred network type? always been in 5G
Try to reset apn configuration and all kind of connection, then switch off the phone for 1 minute and reswitch it on
bob8x said:
funny note, it's slower that 3g: 5.69mps/0.59mbps
Click to expand...
Click to collapse
If you have the chinese model (not EU or global) you might have some 5G band limitations, and it's also to be taken into consideration which bands your operator is using in your area.
Hello guys,
So I've imported a Vivo X Fold from HK and I was wondering how do I enable the 5G bands? I've seen this thread for Samsung, is there perhaps a similar method or something else to do for Vivo?
(Of course, I checked, my carrier is using bands supported by the Vivo X Fold)
Thanks!
I've just imported the Vivo X Note from HK and it has the identical Origin OS Ocean firmware and the same radio hardware and frequency bands as the Vivo X Fold. I just plugged in the Sim Card I had been using in my Samsung Galaxy Note 20 Ultra, and voila, I had 5G service. I had the same question as you, because sitting in my study at home my phone displayed 4G+ at the top, but the other day I put it in the car cradle and as I drove down the street it switched to 5G. I then realized that my house is not within transmitting distance of the local 5G tower, but many other areas of the city I live in are. As a brand new technology 5G coverage is not as broad as 4G.
Xharyel said:
Hello guys,
So I've imported a Vivo X Fold from HK and I was wondering how do I enable the 5G bands? I've seen this thread for Samsung, is there perhaps a similar method or something else to do for Vivo?
(Of course, I checked, my carrier is using bands supported by the Vivo X Fold)
Thanks!
Click to expand...
Click to collapse
Not sure if this helps you but I ordered mine from China. I live in the Netherlands and 5G worked "out of the box".
There is actually a setting on the phone that is off by default. Settings/Mobile Networks/Sim has a toggle for 5G. I toggled it on and had a 5G connection (Canada) right away. The options that appear in that Sim submenu, however, are activated by inserting your carrier's Sim card. If your carrier supports the Vivo X Note or Vivo X Fold for 5G, VoLTE, and WiFi Calling, you will see three toggles there - one for each. In my case I only have the toggle for 5G, no VoLTE or WiFi Calling settings because my carrier will only provision those services for phones that it sells. If you go to that submenu and don't see the toggle to turn 5G on, then you may need to get a new Sim card from your carrier. Some carriers require the use of a new 5G Sim card, others allow 5G with an ordinary LTE Sim card.
I am using the X Fold on T-Mobile USA, while the 5G icon is showing when I go into System management≥ Status Info≥ SIM 1 Status it's only displaying my phone as connected to LTE and shows as having no signal for NR. From running speed test I can confirm I'm getting the same speeds as my Xiaomi Mi 11 Ultra which only runs on LTE. I have T-Mobiles 5G home internet where I get 400+ download speeds so 5g coverage isn't an issue in my area.
T-Mobile's "5G Home Internet" uses a Wi-Fi Gateway (combination modem and router) that connects to T-Mobile nationwide XR (extended range) 5G towers which broadcast on 5G frequency n71. The Vivo X Fold can't connect to these towers. It can connect on 5G frequencies n1, n2, n3, n5, n7, n8, n12, n20, n28, n38, n40, n41, n66, n77, n78, and n79, but not n71. T-Mobile has put up a few Ultra Capacity (UC) 5G towers in big cities and if you are range of one of these your Vivo X Fold will connect on 5G n41 and display "5G UC" when it connects. These new towers also broadcast on 5G n258, n260, and n261, but the Vivo X Fold won't connect on those frequencies. So long story short - your T-Mobile Wi-Fi Gateway will connect to 5G n71, but your Vivo X Fold won't, and unless you are within range of one of the new 5G UC towers your calls will connect on 4G.
I am aware, I am in NYC my TMo gateway is connected to N41. The tower is across the street from me. Here what I see on my phone.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Odd that your phone is displaying the 5G symbol (as well as VoLTE 'HD') when your Sim Status signal strength shows 0 for NR (5G), but is showing a strong 4G signal. I wonder what triggers the 5G symbol when you clearly aren't receiving a 5G signal. Have you used a signal diagnosis app like OpenSignal to see what is broadcasting in your neighborhood?
frcraig said:
Odd that your phone is displaying the 5G symbol (as well as VoLTE 'HD') when your Sim Status signal strength shows 0 for NR (5G), but is showing a strong 4G signal. I wonder what triggers the 5G symbol when you clearly aren't receiving a 5G signal. Have you used a signal diagnosis app like OpenSignal to see what is broadcasting in your neighborhood?
Click to expand...
Click to collapse
Everything except mmWave. If you have the phone and T-Mobile service are you running into the same issues?
I'm leaning towards following this tutorial as this is a Chinese phone and 5G might not be configured to work in the US.
Modify OnePlus 7 Pro 5G, 8 and 8 Pro, 9 and 9 Pro NR/LTE-A band combos - MT-TECH.FI
On this instruction we will modify OnePlus 7 Pro 5G, 8 and 8 Pro band combo profiles with Qualcomm software. OnePlus has limited 5G access and 4G+/LTE+ Carrier Aggregation combinations and this instruction help you to unlock. However this instruction doesn’t unlock hardware defined combinations...
mt-tech.fi
I think you have hit the nail on the head. Countries and telecom carriers had the choice of deploying 5G NSA (not stand alone) or 5G SA (stand alone) technology. 5G NSA provides a 5G signal that piggyback's on a 4G signal and actually relies on an already established 4G infrastructure (towers, servers, switches, etc.). For a 5G phone to work on a 5G NSA network, the phone must have both the radio bands for the 5G frequency, and for the underlying 4G frequency that is necessary for the 5G NSA to work. Most American carriers opted for mmwav 5G NSA technology. On T-Mobile, therefore, your Vivo X Note or Vivo X Fold are 5G SA and 5G NSA compatible, but because T-Mobile uses 5G NSA the phone must not only be capable of connecting on T-Mobile's 5G frequency, but also on the 4G frequency that its 5G frequency piggybacks off. That 4G frequency for T-Mobile is LTE 71, which the Vivo X series doesn't have. I'm in Nova Scotia where my carrier (Rogers) built a 5G SA (stand alone) network, so as long as I can connect on one of its three 5G frequencies (I can connect on two) then I don't have to worry about the phone also connecting on an underlying 4G frequency. But unlike T-Mobile, my carrier won't provision VoLTE for my Vivo X Note, so all my voice calls drop to 3G. If T-Mobile followed my carriers policy you wouldn't be able to place any phone calls because you have shut down your 3G towers. So I have 5G for data (downloads, streaming, etc.) but 3G for voice calls, and you have 4G for data and voice, but no 5G.
frcraig said:
I think you have hit the nail on the head. Countries and telecom carriers had the choice of deploying 5G NSA (not stand alone) or 5G SA (stand alone) technology. 5G NSA provides a 5G signal that piggyback's on a 4G signal and actually relies on an already established 4G infrastructure (towers, servers, switches, etc.). For a 5G phone to work on a 5G NSA network, the phone must have both the radio bands for the 5G frequency, and for the underlying 4G frequency that is necessary for the 5G NSA to work. Most American carriers opted for mmwav 5G NSA technology. On T-Mobile, therefore, your Vivo X Note or Vivo X Fold are 5G SA and 5G NSA compatible, but because T-Mobile uses 5G NSA the phone must not only be capable of connecting on T-Mobile's 5G frequency, but also on the 4G frequency that its 5G frequency piggybacks off. That 4G frequency for T-Mobile is LTE 71, which the Vivo X series doesn't have. I'm in Nova Scotia where my carrier (Rogers) built a 5G SA (stand alone) network, so as long as I can connect on one of its three 5G frequencies (I can connect on two) then I don't have to worry about the phone also connecting on an underlying 4G frequency. But unlike T-Mobile, my carrier won't provision VoLTE for my Vivo X Note, so all my voice calls drop to 3G. If T-Mobile followed my carriers policy you wouldn't be able to place any phone calls because you have shut down your 3G towers. So I have 5G for data (downloads, streaming, etc.) but 3G for voice calls, and you have 4G for data and voice, but no 5G.
Click to expand...
Click to collapse
Are you able to manually turn VoLTE on with the code *#*#86583#*#*? There is also an option to turn on VoNR in developer settings.
minhajmsd1 said:
Are you able to manually turn VoLTE on with the code *#*#86583#*#*? There is also an option to turn on VoNR in developer settings.
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Click to collapse
Thank you for sharing this. I used the dialer code and it gave me the option to enable VoNR (although it didn't give an option for VoLTE). I enabled VoNR but while my phone shows I'm receiving 5G, when I place a voice call it still drops to 3G or H. I phoned my carrier, and they told me they have added the IMEI of my Vivo X Note to the line and have provisioned VoLTE, but I don't believe them. When I called them the other day they told me if I wanted VoLTE I would have to purchase the device from them. After enabling VoNR with the dialer code I can go into developer settings and there I see that it is toggled on, but the Settings/Mobile Networks/Sim 1 submenu still just shows the toggles for "enable 5G" and "enable data roaming", both of which are turned on. I just don't have the "enable VoLTE" option there. If I was rooted I would force the option to appear by editing my build prop, but I don't think anyone has figured out how to root the X Note or X Fold yet. Someone is working on root for the X70pro and they have successfully flashed FunTouch on the CN Origin OS Ocean model, but trying their experimental method on my new Vivo X Note is a bit to adventuresome for me.
I'm sure you've probably tried this already, is VoLTE greyed out in the *#*#4636#*#* service menu?
minhajmsd1 said:
I'm sure you've probably tried this already, is VoLTE greyed out in the *#*#4636#*#* service menu?
Click to expand...
Click to collapse
Yes, it is greyed out in the service menu where it also says IMS Status "unregistered".
I just
frcraig said:
Yes, it is greyed out in the service menu where it also says IMS Status "unregistered".
Click to expand...
Click to collapse
I just had an interesting argument with a service tech for my carrier just now. Each time I call I get a different tech and a different answer, but his guy gave me the stock "if you didn't buy the phone from us those features won't work" line. I told him I know people who have non carrier purchased phones and VoLTE and WiFi Calling works on their phones. He said: "that's because they are using a model we sell ourselves". Knowing that none of the Canadian carriers sell Huawei devices I aske him if that would apply to a non-carrier Huawei purchased in Hong Kong. He said "of course that wouldn't work". I then asked him to look up the account for my wife's line, which he did. I asked him what information his screen was telling him about her line. He said "I see her IMEI was registered on May 17th". I told him that was correct because on that date I swapped SIM cards between our phones and when I put her SIM back into her phone it would have registered again on their network. He went on to say: "it says in bold letters here 'non-carrier device' and VoLTE enabled NO, WiFi enabled NO.". Her phone is a Huawei Mate 20 X which I bought at Trinity Mobile in Hong Kong three years ago. VoLTE and WiFi Calling both work great on her phone. I can toggle off VoLTE on her phone and her 4G signal drops to 3G when placing a voice call, or I can toggle VoLTE on and place a voice call and it stays on 4G and displays the HD Call symbol as well. Weird science!
I tried to check if volte is greyed out but *#*#4646#*#* doesnt work with the phone. how can i go to that menu?
I have tmobile and live in illinois and my 5g and volte is working. Can confirm if you need pictures.
jtizzle34 said:
I have tmobile and live in illinois and my 5g and volte is working. Can confirm if you need pictures.
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Click to collapse
Same but i had to force root to get VoLTE working
Maybe it is Operator dependent as here in the UK (on Three.UK) I have 5G everywhere where other phones have it and also I have HD Calls icon and VoLTE enabled (have not done anything specific for those to work). Pretty soon Three.UK will be shutting down their entire 3G network so there will be only 4G and 5G...
Hi Guys, Just sharing my experience with you . I'm in Australia with Vodaphone. % g works as well as volte, haven't done anything special. I've travelled to the US this week, and 4g is ok, as well as Volte.