Database Develop

about nerwork bands

Hey, guys. Im from the Philippines. Just a question about network bands.
If I buy a Xiaomi Mi 5 in hong kong, will it work with our carrier here in the philippines? Im not well knowledgable about this bands and network stuff just yet.

prince10t said:
Hey, guys. Im from the Philippines. Just a question about network bands.
If I buy a Xiaomi Mi 5 in hong kong, will it work with our carrier here in the philippines? Im not well knowledgable about this bands and network stuff just yet.
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Came across this great website the other day. It seems like the Mi5 is extremely compatible with the two major carriers in the Philippines.
https://www.frequencycheck.com/comp...-32gb-2015105-libra-xiaomi-gemini/philippines
I bought the phone and am In Australia. The Mi5 is only able to get 4G around the major cities here but will drop to 3G/2G automatically, so I think you'll be alright going off the website I linked.
Hope this helps.

Mi 5 4G+ interband or intraband?

As for the title, does the Mi 5 LTE+ is using interband CA or intraband CA in stock ROM/any custom ROM?
Since my country carrier is using band 3 and band 7 LTE mostly, and my current carrier claim that they using interband CA (although it's still LTE CAT 4, so the max bandwidth they do support is 20 Mhz) so my Mi 5 can't use their LTE-A hmmm

sss2sssss said:
As for the title, does the Mi 5 LTE+ is using interband CA or intraband CA in stock ROM/any custom ROM?
Since my country carrier is using band 3 and band 7 LTE mostly, and my current carrier claim that they using interband CA (although it's still LTE CAT 4, so the max bandwidth they do support is 20 Mhz) so my Mi 5 can't use their LTE-A hmmm
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Hi, what's the difference between them? Also in my country there's the aggregation of b3 and b7 and with my mi5 I have never had 4g plus..

Skull_Devil said:
Hi, what's the difference between them? Also in my country there's the aggregation of b3 and b7 and with my mi5 I have never had 4g plus..
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Interband is B3+B7
Intraband is B3+B3 or B7+B7
However after I research awhile and found that Mi 5 does can support Interband CA since just now I read from Taiwan forum, both Taiwan Chunghwa Telecom and Japan NTT Docomo can use their CA in Mi 5 as the attachment shown below
And both operators are using Interband CA, their config is show below:
NTT Docomo: CA_3A_19A, CA_1A_21A, CA_1A_19A_21A, CA_1A_3A_19A and more
Chunghwa Telecom: CA_3A_8A, CA_3A_7A_8A
And as for what I search, B7 have poor signal distribution, as for my operator I'm most seeing the B3 but B7 is really seldom come out

sss2sssss said:
Interband is B3+B7
Intraband is B3+B3 or B7+B7
However after I research awhile and found that Mi 5 does can support Interband CA since just now I read from Taiwan forum, both Taiwan Chunghwa Telecom and Japan NTT Docomo can use their CA in Mi 5 as the attachment shown below
And both operators are using Interband CA, their config is show below:
NTT Docomo: CA_3A_19A, CA_1A_21A, CA_1A_19A_21A, CA_1A_3A_19A and more
Chunghwa Telecom: CA_3A_8A, CA_3A_7A_8A
And as for what I search, B7 have poor signal distribution, as for my operator I'm most seeing the B3 but B7 is really seldom come out
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I can assure you that b3+b7 doesn't work with mi5. I tried really hard to find out a solution but I never succeeded.
http://en.miui.com/thread-360460-1-1.html
This is a post in miui forum where other people had the same problem.. I also chatted with all the dev team trying to figure out something.. Is there something problematic with that and I don't know what it is.. (b7+TDD frequency bands works)

Skull_Devil said:
I can assure you that b3+b7 doesn't work with mi5. I tried really hard to find out a solution but I never succeeded.
http://en.miui.com/thread-360460-1-1.html
This is a post in miui forum where other people had the same problem.. I also chatted with all the dev team trying to figure out something.. Is there something problematic with that and I don't know what it is.. (b3+TDD frequency bands works)
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Click to collapse
But then with the Taiwan Chunghwa Telecom, their band is all FDD band, why in some post they reply it still can detect LTE+?

sss2sssss said:
But then with the Taiwan Chunghwa Telecom, their band is all FDD band, why in some post they reply it still can detect LTE+?
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I honestly don't know, during my searches someone said to me that the problem is the kind of the spectrum (continous or discontinous). Don't ask me what does it mean cause I don't know.. Maybe this is nothing but that's the only answer that I found.. I tried with 3 different phones and I got the 4g plus, with mi5 no 4g plus. I tried all roms (china, global, third part roms) no 4g plus.. Just with b3+b38

Skull_Devil said:
I honestly don't know, during my searches someone said to me that the problem is the kind of the spectrum (continous or discontinous). Don't ask me what does it mean cause I don't know.. Maybe this is bull**** but that's the only answer that i found.. I tried with 3 different phones and i got the 4g plus, with mi5 no 4g plus. I tried all roms (china, global, third part roms) no 4g plus.. Just with b3+b38
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Just now I'm also found that the spectrum distribute by my current carrier is also kind of hairwire, inside the house they are almost all B3 while when go to outside the house hey are almost all B7
This is kind of weird, and according to some forum they tell that my current carrier is really doesn't display 4G+ in major phone as they using 10MHz+10MHz (CAT4) which results some phone may just detect it as 4G signal

sss2sssss said:
Just now I'm also found that the spectrum distribute by my current carrier is also kind of hairwire, inside the house they are almost all B3 while when go to outside the house hey are almost all B7
This is kind of weird, and according to some forum they tell that my current carrier is really doesn't display 4G+ in major phone as they using 10MHz+10MHz (CAT4) which results some phone may just detect it as 4G signal
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No way, that's not possible cause I checked with lte bands and I also checked the band used and I know for sure how much Mhz my carriers use in my country and that conclusion is not possible. I also have proofs that mi5 has no problem in detecting 4g plus as the sum of more bands with photos of lte bands logs.. I think that this problem is underrated and I found just few people to talk about it

I got some news, A friend of mine said to me that intraband is the sum of near frequencies (such as b7 and b38), this kind of aggregation is possible in every condition. The interband aggregation (such as b3 and b7) needs a chip called companion that helps to sum the download of distant bands (b3 and b7). Probably the mi5 does not have this kind of chip and so the only possible CA is the one with near frequencies.. I also tested it and it works. I don't know how to confirm this anyway but it makes a lot of sense.

Will K20 Pro work in NZ?

I'm a bit confused, they are going on about the 9t Pro coming out for Global market, but on Aliexpress there is a K20 Pro with 'Global Rom'.
If i was to buy one of these would it not work in New Zealand? I'm really keen on getting this phone but not sure what to buy.
According to this, it works perfectly with my provider 2Degrees
https://www.kimovil.com/en/where-to-buy-redmi-855
Thanks

NZ Razer said:
I'm a bit confused, they are going on about the 9t Pro coming out for Global market, but on Aliexpress there is a K20 Pro with 'Global Rom'.
If i was to buy one of these would it not work in New Zealand? I'm really keen on getting this phone but not sure what to buy.
According to this, it works perfectly with my provider 2Degrees
https://www.kimovil.com/en/where-to-buy-redmi-855
Thanks
Click to expand...
Click to collapse
The K20 Pro does not have global network bands. Where it's sold with a global ROM, these are unofficial global ROMs, they do not and cannot add extra lte bands.
The Mi 9T, as well as coming with an official global ROM also had a few extra lte bands unlocked. The Mi 9T Pro will do the same, when it eventually arrives.
Looking at your carrier, it uses bands 3, 7 and 28 (maybe 40 too, but could have been a different NZ carrier). The K20 Pro is missing band 28.
Band 28 is a relatively low frequency band, these can travel further and penetrate obstacles better, before losing significant signal strength and quality. Quite often the low frequency bands are used in rural areas, where masts are spread widely, or major city centres that are very heavily built up.
NZ is a very sparsely populated country, so it's possible band 28 is heavily relied on outside of the town's and cities. But this is only my slightly educated guess. I would suggest doing some more homework on how much of the 2Degree network relies on band 28.
I imagine in and around towns and cities you'll have very little issues, but that's a small percent of the country.
Assuming the Mi 9T Pro will have the same bands as the Mi 9T, then it will come with band 28

Robbo.5000 said:
The K20 Pro does not have global network bands. Where it's sold with a global ROM, these are unofficial global ROMs, they do not and cannot add extra lte bands.
The Mi 9T, as well as coming with an official global ROM also had a few extra lte bands unlocked. The Mi 9T Pro will do the same, when it eventually arrives.
Looking at your carrier, it uses bands 3, 7 and 28 (maybe 40 too, but could have been a different NZ carrier). The K20 Pro is missing band 28.
Band 28 is a relatively low frequency band, these can travel further and penetrate obstacles better, before losing significant signal strength and quality. Quite often the low frequency bands are used in rural areas, where masts are spread widely, or major city centres that are very heavily built up.
NZ is a very sparsely populated country, so it's possible band 28 is heavily relied on outside of the town's and cities. But this is only my slightly educated guess. I would suggest doing some more homework on how much of the 2Degree network relies on band 28.
I imagine in and around towns and cities you'll have very little issues, but that's a small percent of the country.
Assuming the Mi 9T Pro will have the same bands as the Mi 9T, then it will come with band 28
Click to expand...
Click to collapse
It says that 2degrees doesn't use B28, only other carriers in NZ. So that would mean its safe to assume it would work?
Thanks

NZ Razer said:
It says that 2degrees doesn't use B28, only other carriers in NZ. So that would mean its safe to assume it would work?
Thanks
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I checked on Wikipedia, however I was looking at the bands for Spark by mistake. 2Degrees uses 3, 8 and 28.
https://en.wikipedia.org/wiki/List_of_LTE_networks?wprov=sfla1
Band 8 is on the K20 Pro and is also a low frequency band. So it could well be that it will work OK. However it is showing that band 8 was added to the 2Degrees network only last year, so might still be wise to see if you can find out how widespread band 8 is used on their network.
Edit:
A bit more reading. The 2Degree website FAQs confirms it uses the above 3 bands. Band 8 was previously used for their 2G network, but was freed up when they turned off 2G, which allowed them to use it for LTE. Maybe that will mean it's use is widespread.

I'm not sure about nz but it works perfectly fine here in Australia. The only band we use in Aus that it's missing is B20 which is very common. But fortunately if you're with Telstra in Aus they don't have any areas that only run on B20 so there's always something for me to connect to. I also live in a rural area.
So my advice is to check different areas all over nz to see what they support. I used a site called cellmapper to do this https://www.cellmapper.net

NZ Razer said:
I'm a bit confused, they are going on about the 9t Pro coming out for Global market, but on Aliexpress there is a K20 Pro with 'Global Rom'.
If i was to buy one of these would it not work in New Zealand? I'm really keen on getting this phone but not sure what to buy.
According to this, it works perfectly with my provider 2Degrees
https://www.kimovil.com/en/where-to-buy-redmi-855
Thanks
Click to expand...
Click to collapse
Not sure about NZ, but in Australia it works. I'm with ALDI mobile which I guess is Telstra.

billybrownbear said:
I'm not sure about nz but it works perfectly fine here in Australia. The only band we use in Aus that it's missing is B20 which is very common. But fortunately if you're with Telstra in Aus they don't have any areas that only run on B20 so there's always something for me to connect to. I also live in a rural area.
So my advice is to check different areas all over nz to see what they support. I used a site called cellmapper to do this https://www.cellmapper.net
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Click to collapse
Vladimir Lenin said:
Not sure about NZ, but in Australia it works. I'm with ALDI mobile which I guess is Telstra.
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I've gone ahead and purchased it as of an hour ago excited to get my hands on it, this makes me even more confident as your bands are the same pretty much. Can't wait!

billybrownbear said:
I'm not sure about nz but it works perfectly fine here in Australia. The only band we use in Aus that it's missing is B20 which is very common. But fortunately if you're with Telstra in Aus they don't have any areas that only run on B20 so there's always something for me to connect to. I also live in a rural area.
So my advice is to check different areas all over nz to see what they support. I used a site called cellmapper to do this https://www.cellmapper.net
Click to expand...
Click to collapse
Australia use band 28, not 20.

Global version and chinese version are using same 4G bands so there won't be any problems.
Sent from my Redmi K20 Pro using Tapatalk

Unlock LTE Bands on K20 Pro China version

Hello friends, it's been a while since someone posed the question below. I just bought a K20 Pro (China Version) from Aliexpress and only found out about the limitations of LTE bands. I was wondering if there is now a workaround to add LTE bands with a newer version QPST or another workaround/hack? If that, could we expect something in the future or am I pretty much toast?

You are toast. Time to buy a phone that's got all the bands you need. I'm in the same spot I need to give up on these POS international phone with almost 0 LTE bands for the USA.

954wrecker said:
You are toast. Time to buy a phone that's got all the bands you need. I'm in the same spot I need to give up on these POS international phone with almost 0 LTE bands for the USA.
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I hope at some point there will be a hack, like there has been in the past. where are the geniuses on this forum ?

It's not about geniusness, it's utterly time wasting and requires a hell lot of effort which in the end doesn't guarantee it will unlock the bands, so next time get a phone with your required bands.
Sent from my Redmi K20 Pro using Tapatalk

asfazrq said:
Hello friends, it's been a while since someone posed the question below. I just bought a K20 Pro (China Version) from Aliexpress and only found out about the limitations of LTE bands. I was wondering if there is now a workaround to add LTE bands with a newer version QPST or another workaround/hack? If that, could we expect something in the future or am I pretty much toast?
Click to expand...
Click to collapse
I seen people talking about how to do it on LO17 thread

SuperShad98 said:
I seen people talking about how to do it on LO17 thread
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Click to collapse
Didn't find any mention of adding LTE bands in the LOS thread. Can you point me in the right direction with a post number or page number?

I'm referring to the comments around the end of the first page on this thread (also continues to page 2)
https://forum.xda-developers.com/k20-pro/development/rom-lineageos-17-0-t3976469
I also found this, which seems pretty much what we need
https://forum.xda-developers.com/android/apps-games/app-qualcomm-nv-calculator-adding-2g-3g-t2915649

**** these international phones I'm tired of them not having the bands we use in the USA activated. My mix 3 had every single LTE band and this K20 pro has 1 ****ty band. Why can't every phone have every band that people use in the world, is it really that hard?

954wrecker said:
**** these international phones I'm tired of them not having the bands we use in the USA activated. My mix 3 had every single LTE band and this K20 pro has 1 ****ty band. Why can't every phone have every band that people use in the world, is it really that hard?
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If you look at the OnePlus 7 Pro bands you can see that it's easy, but brands don't want to do that for profits of selling a new phone when someone moves to a different country and so on, however I am not too sure why xiaomi doesn't have all bands enabled on the global version of the phone like OnePlus, I would understand locking the CN and Indian version, but the global should have all bands enabled

Engineer code qualcomm 855
Unfortunately, even if I've bought a MI9 T pro , described with correct bands & charger (need 4G B20 & B28) ; they send me a Redmi K20 pro with chinese plug... I opened a dispute but it drags on and I'm afraid of not having a commercial solution. So If someone did find a technical one ; I'd be very glad !
I saw some old techniques on Youtube, none of them works ; nor engineering codes (#*#*...) Is there a way to know them ? Thank you !

Good luck, but it's almost improbable, Even Pocophone failed.
Sent from my Redmi K20 Pro using Tapatalk

network signal guru which is available in play store with that can change bands of LTE but root access is must

leothomas2580 said:
network signal guru which is available in play store with that can change bands of LTE but root access is must
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Click to collapse
It won't work, if it was that easy it would be miracles, have you tried?
Sent from my Redmi K20 Pro using Tapatalk

ishaqtkr said:
It won't work, if it was that easy it would be miracles, have you tried?
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Click to collapse
Right now I'm using custom rom(evolution x) on my Redmi k20 pro/mi9 t pro didn't tried on Chinese rom
but the bands works using network signal guru

leothomas2580 said:
Right now I'm using custom rom(evolution x) on my Redmi k20 pro/mi9 t pro didn't tried on Chinese rom
but the bands works using network signal guru
Click to expand...
Click to collapse
This from the Network Signal Guru FAQs
Can you changed the band capacities of my cell phone. My cell phones are from other countries and the band capabilities are not so good, and I want more band support. Could NSG do that?
NSG cannot provide this kind of feature and we don't change the band capabilities. It's different among different phones, so it's dangerous and once failed, you will lose all of the band capabilities of certain radio technology. And it's very difficult to recover.
So, no it's not possible to unlock the bands.

Robbo.5000 said:
This from the Network Signal Guru FAQs
Can you changed the band capacities of my cell phone. My cell phones are from other countries and the band capabilities are not so good, and I want more band support. Could NSG do that?
NSG cannot provide this kind of feature and we don't change the band capabilities. It's different among different phones, so it's dangerous and once failed, you will lose all of the band capabilities of certain radio technology. And it's very difficult to recover.
So, no it's not possible to unlock the bands.
Click to expand...
Click to collapse
I knew it, if it was as easy as using an app everyone would import phones from China and modify lol
Sent from my Redmi K20 Pro using Tapatalk

ishaqtkr said:
I knew it, if it was as easy as using an app everyone would import phones from China and modify lol
Click to expand...
Click to collapse
Okay thank you

It's likely the bands are "hardware locked".
So depending on the region of the device various bands will be enabled or disabled. Every region of the device might well have the same modem - and that modem might support all the bands you want - but they won't work and there'll be no way of getting them to work as it'll be on a hardware-level.
It's why when you flash a Global ROM to a Chinese handset bands don't appear and vice versa. Both region ROMs will have their respective modern firmware but that doesn't change what bands you get - which would imply its literally hard-coded into the modem itself.
What I've read on the pocophone implies the band programming is locked, read-only, unmodifiable.

every site i check says mi phone can use lte in my country but i cant connect to it on my phone .... what do i do??

Question Mi 11 ultra network bandwidth limit / low Download speeds

Hello Xiaomi community, I am using my Mi 11 ultra(Chinese - yet to flash EU rom) on T-mobile in US. I have a oneplus 8T as well which is connected to the same network. When I test these two mobiles, which are connected to HSDPA right next to each other, I get 40mbps download speeds on Oneplus 8t but only 10mbps on mi 11 ultra. Is mi 11 ultra or MiUi limiting the network bandwidth? Are there any settings that I can adjust to see the same speeds? Both seem to be connected on Band 2. Appreciate any help with this. @olkitu, please comment.

lalith said:
Hello Xiaomi community, I am using my Mi 11 ultra(Chinese - yet to flash EU rom) on T-mobile in US. I have a oneplus 8T as well which is connected to the same network. When I test these two mobiles, which are connected to HSDPA right next to each other, I get 40mbps download speeds on Oneplus 8t but only 10mbps on mi 11 ultra. Is mi 11 ultra or MiUi limiting the network bandwidth? Are there any settings that I can adjust to see the same speeds? Both seem to be connected on Band 2. Appreciate any help with this. @olkitu, please comment.
Click to expand...
Click to collapse
*#*#4636#*#*

avetny said:
*#*#4636#*#*
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Click to collapse
Thank you for the info @avetny . I have checked both the mobiles and here is what I see. Oneplus 8t mostly connected to LTE, and Mi 11 ultra switching between EDGE, HSPA and if I force the setting to NR/LTE only, it shows LTE but can't browse anything and no data connection at all. Am I missing something? Also am sitting right next to the TMobile 4g LTE personal cell booster box with both these mobiles
This is when mi 11 on EDGE n/w
This is when mi 11 on LTE (with 20mbps download speed)
This is oneplus 8t mostly connected to LTE with 60 to 100mbps download speeds

Restart device

When I get into that menu and I change the network type the setting doesn't stick,why?

avetny said:
Restart device
Click to expand...
Click to collapse
Tried with various settings few times. Am not sure why the connection stability is low and always switching from EDGE to HSPA to LTE where as oneplus rarely shows me HSDPA. I have a 4G LTE T mobile cell spot sitting right next to me.
In terms of the modem Mi 11 ultra has X60 where as oneplus 8t has X55

Check again settings.
Make sure 5G is preferred.
Make sure 5G Smart Switch is off.
This make help too: 5G battery saver is off.

lalith said:
Hello Xiaomi community, I am using my Mi 11 ultra(Chinese - yet to flash EU rom) on T-mobile in US. I have a oneplus 8T as well which is connected to the same network. When I test these two mobiles, which are connected to HSDPA right next to each other, I get 40mbps download speeds on Oneplus 8t but only 10mbps on mi 11 ultra. Is mi 11 ultra or MiUi limiting the network bandwidth? Are there any settings that I can adjust to see the same speeds? Both seem to be connected on Band 2. Appreciate any help with this. @olkitu, please comment.
Click to expand...
Click to collapse
Well Xiaomi do not support Carrier Aggregation combinations and 5G used in US. Maybe SA only n41 could work but it's by default disabled outside from China.
OnePlus 8T is US model? You should buy device from your own region to avoid issues. As you know you can check on https://cacombos.com website supported bands and carrier aggregation combinations of devices. Make sure it support Carrier Aggregation combinations your carrier use on your area.

olkitu said:
Well Xiaomi do not support Carrier Aggregation combinations and 5G used in US. Maybe SA only n41 could work but it's by default disabled outside from China.
OnePlus 8T is US model? You should buy device from your own region to avoid issues. As you know you can check on https://cacombos.com website supported bands and carrier aggregation combinations of devices. Make sure it support Carrier Aggregation combinations your carrier use on your area.
Click to expand...
Click to collapse
Thank you for the response, would flashing a Global ROM gets me all the Band combos? I understand changing the ROM is not going to get me the missing Band 66 from Chinese version phone, but atleast wondering if I flash, the combos listed on Global version would follow? or ROM flashing will not change any Combos? Thank you.

lalith said:
Thank you for the response, would flashing a Global ROM gets me all the Band combos? I understand changing the ROM is not going to get me the missing Band 66 from Chinese version phone, but atleast wondering if I flash, the combos listed on Global version would follow? or ROM flashing will not change any Combos? Thank you.
Click to expand...
Click to collapse
Try the global or Eu ROM
The China one is full of headaches outside china

speedtripler said:
Try the global or Eu ROM
The China one is full of headaches outside china
Click to expand...
Click to collapse
Am trying NetMonster to see which cell tower and band(s) its connecting and if its using any combo bands. Typically the combo shows up like - (4G. LTE 1900+ AWS-A). I have not seen a combo so far on this with the Chinese ROM, but not sure if Global/EU ROM makes any difference. Unless the Global/EU ROM deals with Band Combos. Am yet to boot unlock, so could not do a quick try.
Were you able to get better speeds or use NetMonster to see Combo bands with Non Chinese ROM?

lalith said:
Am trying NetMonster to see which cell tower and band(s) its connecting and if its using any combo bands. Typically the combo shows up like - (4G. LTE 1900+ AWS-A). I have not seen a combo so far on this with the Chinese ROM, but not sure if Global/EU ROM makes any difference. Unless the Global/EU ROM deals with Band Combos. Am yet to boot unlock, so could not do a quick try.
Were you able to get better speeds or use NetMonster to see Combo bands with Non Chinese ROM?
Click to expand...
Click to collapse
I had great speeds on every ROM but In my city they only use band 78 for 5G and I get about 250-300mb even without line of sight of the antenna, even I'm a restaurant or a mall it's that fast
i haven't been able to spot a 5G tower yet so I can test one in direct line of sight of it but I've read you can get about 700mb/s

speedtripler said:
I had great speeds on every ROM but In my city they only use band 78 for 5G and I get about 250-300mb even without line of sight of the antenna, even I'm a restaurant or a mall it's that fast
i haven't been able to spot a 5G tower yet so I can test one in direct line of sight of it but I've read you can get about 700mb/s
Click to expand...
Click to collapse
Wow, that's crazy speed. Never heard of those kind of speeds in US. I wish the phone manufacturers just let the users decide what bands they want to enable in their region if the phone is high-end latest and greatest

Not always but here in london at my place i get 500+Mbps