Further reading about 4G Advanced aka LTE+ Carrier Aggregation:
https://www.electronics-notes.com/a...m-evolution/4g-lte-carrier-aggregation-ca.php
https://www.3gpp.org/technologies/keywords-acronyms/101-carrier-aggregation-explained
Mi 9 thread (I've started from):
https://forum.xda-developers.com/Mi-9/how-to/carrier-aggregation-mi9-t3909824
Captured CA Combinations as offered by Xiaomi Mi 9T modem, with Global/EU firmwares (probably, also Russian), while attaching to 4g:
https://cacombos.com/device?model=M1903F10G
Somebody with Chinese or Indian MIUI could also capture and upload to see a potential differences - HowTo instructions are priovided on the CA Combos site
Apps like Network Cell Info Lite, LTE Discovery, Net Monitor Lite, Net Monster could at best show if using LTE+ but cannot unveil Aggregated Carriers.
To see them, use Network Signal Guru:
https://play.google.com/store/apps/details?id=com.qtrun.QuickTest
Root required, you don't need to pay for Ultimate Service but the app for free is of no use with dual SIM - disable SIM 1 or SIM 2
Screenshots below show three Aggregated Carriers: the so-called combo 20A2-3A2A-1A2 (Primary b3, Secondary b1 and b20), aggregating non-contiguous intra-band 20+20+15 MHz , on Mi 9T, stock QFJEUXM 11.0.5 (no QPST modding needed to get it working)
I have used SIM 2, and it was with the provider who supports exactly those three 4g bands: b1, b3 and b20.
For the test I disabled WiFi and SIM 1 (provider supporting only b3 and b20 - will test later), and for download started to play an HD movie by YouTube Vanced (to be able to push it to the background)
I don't know how would Aggregated Carriers work with CN or IN firmwares if used e.g., also here in Europe.
Also, if and how custom ROMs support LTE+ Aggregated Carriers - but one could test himself
Of course, it also depends on your 4g provider, potentially your Mobile Internet subscription and the available 4g bands at the given time and location
Another example with my SIM 1, different Mobile provider, providing only two 4g bands, b3 and b20
Here I got CA combo 20A2A-3A2-3A2 (Primary cell on b20, two Secondary cells on b3), aggregating non-contiguous intra-band 15+20+10 MHz
Related
Anandtech mentions it is LTE-A Category 12 (600 Mbps)
Some sites mention it is Category 6 (300 Mbps)
So what is it exactly?
With the new Non-HLOS.bin shipped with 17 S, there ist no cat 6 LTE , only 150 Mbit cat 4. The + sign at 4G sign doesnt appear
So should I go back to Indian 16S ? I am aware Indian 17S or 18S is on the verge of getting officially released. I prefer the Chinese 17S because battery is absolutely brilliant after removing the bloat. Indian 16S has horrible battery and standby time.
How to check the LTE-A ? I'm on CN 16s, in Malaysia (CA Band_3_7).
Whenever my phone show 4G+, then phone signal will drop for total no signal, can't call or data (Searching mode)
yweel said:
How to check the LTE-A ? I'm on CN 16s, in Malaysia (CA Band_3_7).
Whenever my phone show 4G+, then phone signal will drop for total no signal, can't call or data (Searching mode)
Click to expand...
Click to collapse
CN 16s and older ROMS are worthless for LTE. Try with Indian 16S.
sanke1 said:
CN 16s and older ROMS are worthless for LTE. Try with Indian 16S.
Click to expand...
Click to collapse
Is 4g+ running on the indian rom ?r
schafxp said:
Is 4g+ running on the indian rom ?r
Click to expand...
Click to collapse
Cannot tell as my operator is going to start CA soon in my area. People are saying that Indian 16S supports CA while Chinese 17S and below do not support CA.
Bump
这么6？:good:
In my case "LTE +" icon appeared.
I live in Japan and I use Y!mobile.
My device's ROM is "Resurrection Remix OS".
sryu120 said:
In my case "LTE +" icon appeared.
I live in Japan and I use Y!mobile.
My device's ROM is "Resurrection Remix OS".
Click to expand...
Click to collapse
If you get a chance please post your modem version. Thanks.
Snapdragon 820 has X12 modem (category 12 LTE up to 600 Mbps). I have had 4G+ for ages (in Japan on OCN Mobile One, an MNVO on the docomo network). However, as it is an oversubscribed MNVO my speeds are never great and even when getting a CA (4G+) signal they don't really change. My current firmware baseband version is as per this screenshot:
kanagawaben said:
Snapdragon 820 has X12 modem (category 12 LTE up to 600 Mbps).
Click to expand...
Click to collapse
Unfortunately even on the same base chipset some of the radio params are up to the OEM, depending on what band combinations LE have programmed CA may work with some networks and not with others (eg OCN might be using 20Mhz x2 in 800Mhz while ThreeUK might be using 1x 15Mhz on 1800Mhz and 1x 15Mhz in 800Mhz).
Scratchling said:
Unfortunately even on the same base chipset some of the radio params are up to the OEM, depending on what band combinations LE have programmed CA may work with some networks and not with others (eg OCN might be using 20Mhz x2 in 800Mhz while ThreeUK might be using 1x 15Mhz on 1800Mhz and 1x 15Mhz in 800Mhz).
Click to expand...
Click to collapse
Yes, obviously availability of CA depends on carriers and on the LTE bands available to the device. Not all bands are turned on for our device so some people some places are going to be SOL. In the case of OCN the carrier aggregation is probably working with bands 1 & 3 I guess (the other bands OCN use are 19 & 21, which are not available on the LeMax 2).
kanagawaben said:
Yes, obviously availability of CA depends on carriers and on the LTE bands available to the device. Not all bands are turned on for our device so some people some places are going to be SOL. In the case of OCN the carrier aggregation is probably working with bands 1 & 3 I guess (the other bands OCN use are 19 & 21, which are not available on the LeMax 2).
Click to expand...
Click to collapse
Ok so far then:
272-05 Three Ireland B3, B20, B8 Not Working
272-01 Vodafone Ireland B3, B20, B8 Not Working
440-10 OCN Japan (NTT) B1, B3, B19, B21 Working
Probably should just google what bands CN Mobile use for CA, that'll be the only thing LeEco will bother to implement in the baseband.
Scratchling said:
Ok so far then:
272-05 Three Ireland B3, B20, B8 Not Working
272-01 Vodafone Ireland B3, B20, B8 Not Working
440-10 OCN Japan (NTT) B1, B3, B19, B21 Working
Probably should just google what bands CN Mobile use for CA, that'll be the only thing LeEco will bother to implement in the baseband.
Click to expand...
Click to collapse
CA is strange. My friend has a Moto Z Play he bought direct from Motorola Japan. He is using OCN, same as me. His Z Play has the same available OCN LTE bands as my LeMax 2 (B1 & B3) and Motorola say it is CA compatible, but while I get 4G+, he doesn't. And another friend has a Japanese version ASUS Zenfone 3 and he gets 4G+ on another MNVO using same docomo network with B1 & B3. So it seems to be a bit of a lottery depending on your device & your region & carrier.
kanagawaben said:
CA is strange. My friend has a Moto Z Play he bought direct from Motorola Japan. He is using OCN, same as me. His Z Play has the same available OCN LTE bands as my LeMax 2 (B1 & B3) and Motorola say it is CA compatible, but while I get 4G+, he doesn't. And another friend has a Japanese version ASUS Zenfone 3 and he gets 4G+ on another MNVO using same docomo network with B1 & B3. So it seems to be a bit of a lottery depending on your device & your region & carrier.
Click to expand...
Click to collapse
Compatibility isnt straightforward as its also dependent on resource blocks or RBs. Some radios can handle CA 2x 2x20Mhz and some might only manage 2x 2x10Mhz. Thats why reading the RRC messages between tower and handset is useful as OEMs dont release the full config that their UEs broadcast.
Snapdragon 820 aggregates 3 frequencies (3CC). I never managed to force him to do it, but 2 can (2ca).
Will the dualsim model also have LTE cat.16 (1gbps) modem suitable for European networks? Or it will only be suitable for Asian networks who mainly use intraband aggregation (4g+)?
Europe and Asia use same methods for carrier aggregation, just a bit different LTE bands are used.
Bands and Carrier aggregation support is same for dual sim and single sim version. Difference comes from that the Single sim version has 4x4MIMO antenna support, while Dual sim version has only 2x2MIMO support.
4x4MIMO antenna is needed to achieve that LTE Cat16 1Gbps speeds.
4x4MIMO antenna support from the telekom side in Europe is actually quite poor, as the population density is low to drive that 4x Antenna adoption.
4x4MIMO usage in Asian telecoms networks is actually quite high, due to higher population density.
So in summary, i would recommend definitely to get the Single sim version of XZ1 if you life in Asia as you would get much better LTE speeds out of it.
While the Single sim version would be preferred device for Europe also, you would be still okay to keep using Dual sim version for couple of years.
You can check out which lte carrier aggregation combinations XZ1 G8341 supports here https://docs.google.com/spreadsheets/d/1Itt7bKftWTQtKHs76-pRT5H1KEBYSoI1kdqeGjJpWMU/edit#gid=0
Let me know if your country is missing(check country code from Lists sheet).
Network code is 202-01.
I m between to choose xz1 or xzp (single versions both), I definately need 4x4mimo, my carrier will launch it within few months.
Ca combinations for both devices are almost identical for my network but in total +102 combinations more for xz1.
Will xzp offer same ca combinations in the future (maybe with baseband update)? Or 3gpp release version of each device is one-off?
Xzp dual is also 2x2mimo?
I don't think that XZ Premium will get any more bands support or extra CA combinations that are in XZ1 via baseband update. The new bands and CA in XZ1 are more useful in North American and Asian markets anyway.
You will be in a good situation in Greece Cosmote network with both phones. VoLTE/VoWIFI support for both and decent CA support when in home and traveling abroad.
Personally i would go with XZ1 as it fits in hand much better than XZ Premium. I have "old" XZ and XZ Premium myself, XZ is still the main phone for me.
At the moment single xzp is sold cheaper than xz1.
Also I have a doubt about xz1 battery because I mainly use cellular data network rather than WiFi.
Can my network in the future be upgraded in Sony's ca combination list? Offer more ca combinations/change category? For e.g. they say (network) they may support 7+7+3 60mhz in the near future.
Has xz1 activated 256-Qam for EU region? xzp has.
*I'm a fanatic cellmapper user.
XZ1 and XZ Premium batteries will balance out i think. XZ Premium has bigger battery, but much bigger screen to feed.
The spectrum in Greece for B7,B3,B20 is already pretty well divided, all B7 and B3 and B20 is allocated to providers.
I have made small comparison table just for you. Cosmote Greece and XZ1 vs XZp https://docs.google.com/spreadsheets/d/1g5KRgOimFopK3dpBd-ajJs6QyA5LH8WDrlqrDSEgqeY/edit?usp=sharing
If operators want more CA combination support in Sony phones, then they need request/pay Sony to do that. Depends if operator plans to use those CA combinations in their network.
XZ1 and XZP both have exact same operator specific configuration file. If you say that XZp has 256QAM then i am pretty sure XZ1 will have that also.
Looking at the hardware capability of both phones and current LTE spectrum holdings of Cosmote Greece, i would see following currently missing CA combinations possible in their network.
38A-7A-3AA-0 (60Mhz total)
38A-20A-3AA-0
38A-20AA-7A-0 (XZ1 only)
38A-20AA-0
B38 20mhz is bought but not used as of today.
Also cosmote has bought a second 10mhz b7 spectrum, but is also not used as of today. Today 10mhz b20, 20mhz b3 and 20mhz b7 is used for 500mbps max using 256qam.When 4x4mimo is launched will possibly upgrade to 900mbps max. using 4x4 on b3 and b7.
Has any network worldwide done 4x4 mimo on b20 (800mhz)?
*this year cosmote is allocating some b8 900mhz from gsm to umts.
4x4 MIMO on 800Mhz(or any other low band) is not possibly on device side, due to physical limitations.
You are welcome to discuss networks and cellmapper in the Telegram chat https://t.me/cellmapper
4x4mimo on b1 2100mhz is supported on xzp and xz1?
My network may allocated it in the far future from umts to LTE.
38A-20AA-7A-0 is supported by xz1 but not from xzp?
Personally i have confirmed 4x4MIMO on "old" XZ B3 B7 B38 - no B1. XZ Premium has been indirectly confirmed to have 4x4MIMO support on B1,B3,B7(no info on B38 or others). I am confident that XZ1 willl match 4x4MIMO support on those bands and probably add support for US bands as well.
Is it sure that dual xz1 g8342 is only 2x2mimo?
Why new ca combinations (for eg those supported from xz1) cant be added to xpz? Its still a flagship.
I am not 100% sure that G8342 is not 4x4MIMO and only 2x2MIMO, but the 2nd sim capability is not "free" and has to come from expense of some cellular(antenna) capability.
Thats why dual sim op3(x12 modem) was only 2CA, Op5(x16 modem) is only 3CA. Also all the Gigabit LTE demos are done using single sim XZp.
Based on these previous information, i have no confidence to recommend dual sim version as 4x4MIMO device.
Anyway you get much better firmware support for single sim version.
It's possible that XZ Premium may get additional CA combinations support, but as it probably requires some kind of certification(money) then i would not hold my breath for that to happen.
No guarantees.
Ok but g8342 dual is advertised as cat.16 only in one sim, so i suppose its 4x4mimo capable. But we need to clarify this.
Has Sony done it before in another device? (To add some ca combinations at a later time).
Kirin 970 soc with 4x4mimo on 3carriers (cat.18) is already out.
Sony added CA combinations using B32(first available to XZs) to XZ, but the band support itself was already there. So a pretty minor addition.
We need root with DRM fix on XZ Premium / XZ1 / XZ1 Compact then we can confirm 4x4MIMO/256QAM support with app Network Signal Guru.
Come and discuss Kirin soc and other stuff in Telegram chat https://t.me/cellmapper Easier than posting here
Sony just started supporting dual versions of both xpz and xz1 for the 1st European country, France.
Thailand 3CA support
Does this line means Thailand will have 40-40-40 support? Does it also mean it will have 256QAM/4X4 MIMO when doing 3CA on band 40 as well?
40C-3AA-0
I will be very interested if it can also do 1-3-8 + 256QAM/4X4 MIMO.
VeixES said:
Europe and Asia use same methods for carrier aggregation, just a bit different LTE bands are used.
Bands and Carrier aggregation support is same for dual sim and single sim version. Difference comes from that the Single sim version has 4x4MIMO antenna support, while Dual sim version has only 2x2MIMO support.
4x4MIMO antenna is needed to achieve that LTE Cat16 1Gbps speeds.
4x4MIMO antenna support from the telekom side in Europe is actually quite poor, as the population density is low to drive that 4x Antenna adoption.
4x4MIMO usage in Asian telecoms networks is actually quite high, due to higher population density.
So in summary, i would recommend definitely to get the Single sim version of XZ1 if you life in Asia as you would get much better LTE speeds out of it.
While the Single sim version would be preferred device for Europe also, you would be still okay to keep using Dual sim version for couple of years.
You can check out which lte carrier aggregation combinations XZ1 G8341 supports here https://docs.google.com/spreadsheets/d/1Itt7bKftWTQtKHs76-pRT5H1KEBYSoI1kdqeGjJpWMU/edit#gid=0
Let me know if your country is missing(check country code from Lists sheet).
Click to expand...
Click to collapse
XZ1 Dual G8342 and XZ1 (G8341) both have most CA combinations(136 variations) available in Thailand compared to any country.
Thailand has support for 40C-1 and 40C-1, which are contigious B40 (20+20Mhz). 40D would be the 20+20+20 possibility which it does not have enabled.
It does have support for 40C-3AA and 40C-28AA, both 3CA when B3 and B28 are primary band(second A denotes the primary band).
You can check CA definitions here http://niviuk.free.fr/lte_ca_band.php
While the single sim and dual sim model share exact same CA combinations capability, there are some differences between the 2 devices.
XZ1 Dual G8342 has Customized TH firmware available, meaning that you get 256QAM and VoLTE etc stuff for dtac,ais and truemove. 4x4 MIMO support unconfirmed.
XZ1 (G8341) has no Customized TH firmware, meaning that you will not get any VoLTE(ordinary 3g calling instead), no 256QAM. But 4x4 MIMO is known to be available.
4x4 MIMO on XZ1 (G8341) is supported on bands B1,B3,B7,B38 (North American B2,B4,B66 yet to confirm).
XZ1 Dual G8342 will get you 1-3-8 + 256QAM, but 4x4MIMO on bands B1 and B3 is unknown because have not seen anyone confirm 4x4MIMO on dualsim version yet.
Thanks!!
I'm looking for phones with 40-40-40. However, there doesn't seem to be any of them around.
VeixES said:
XZ1 Dual G8342 and XZ1 (G8341) both have most CA combinations(136 variations) available in Thailand compared to any country.
Thailand has support for 40C-1 and 40C-1, which are contigious B40 (20+20Mhz). 40D would be the 20+20+20 possibility which it does not have enabled.
It does have support for 40C-3AA and 40C-28AA, both 3CA when B3 and B28 are primary band(second A denotes the primary band).
You can check CA definitions here http://niviuk.free.fr/lte_ca_band.php
While the single sim and dual sim model share exact same CA combinations capability, there are some differences between the 2 devices.
XZ1 Dual G8342 has Customized TH firmware available, meaning that you get 256QAM and VoLTE etc stuff for dtac,ais and truemove. 4x4 MIMO support unconfirmed.
XZ1 (G8341) has no Customized TH firmware, meaning that you will not get any VoLTE(ordinary 3g calling instead), no 256QAM. But 4x4 MIMO is known to be available.
4x4 MIMO on XZ1 (G8341) is supported on bands B1,B3,B7,B38 (North American B2,B4,B66 yet to confirm).
XZ1 Dual G8342 will get you 1-3-8 + 256QAM, but 4x4MIMO on bands B1 and B3 is unknown because have not seen anyone confirm 4x4MIMO on dualsim version yet.
Click to expand...
Click to collapse
With my Max2 (with LineageOS 14.1) I recently realized when I was in an area where one could get B3 and B7 bands (screenshots taken in same area) that Network Signal Guru cell table shows only cells from the band phone is currently connected at. When I look at Network Signal Guru screenshots online, I see that there are screenshots where it can and should show mixed list of bands. It looks like the phone only makes a list of cells from the connected band, sometimes causing unoptimal results.
I tried the instructions from https://forum.xda-developers.com/lenovo-p2/how-to/enabled-4g-ca-p2-t3707584 and at RFNV LTE B3 CA BC CONFIG, RFNV LTE B7 CA BC CONFIG and RFNV LTE B20 CA BC CONFIG the original values were 0 and I changed them to 524356 with QXDM but it did not have any effect.
I am not exactly sure why this doesnt work? Is there another option to set at QXDM to enable this functionality? I think I should be able to see available cells because now phone stays connected to B7 until signal is very bad even when there are better cells available at B3.
Edit: I remembered that this works between bands B1 + B3 in this phone. But apparently not B3 + B7 and it does not appear that the usual RFNV LTE CA BC CONFIG is doing anything actually.
Thanks!
@kirtikhurana I know that LTE CA Matrix shows it but there is always "1 carrier". When you have CA, the LTE symbol turns into LTE+ I know this because I have a LeEco Pro3. Which works properly. I also tried to copy configuration from Pro3. It has B3 set 69 and B7 set 4. I should have 1800Mhz + 2600Mhz so that works perfectly with Pro3.
There must be something else wrong. Here is what it looks like when it works with Pro3
Well, I copied the whole RFNV folder with EFS explorer and now I can see more bands in Signal Guru but it still wouldnt connect to B3+B7 together. Trying to flash QCN of X820 was fruitless (my phone is an X829). Overalll, not a big problem but annoying. This is probably why people can't unlock B20 also, it just won't work because of something else.
Is there any progress on this? I have Le Max 2 X820 which by default aggregate only band 1+3 (working fine) so i downloaded all of the Qualcomm software and I tried do to 1+3+7(even tried 1+3+7+20) and 1+7, 3+7, 1+20, 3+20, 7+20, one by one, and literally nothing, the settings are saved properly but aggregation is impossible on other bands. Its very important for me but I ran out of ideas It must be possible because Snapdragon 820 supports all of this, but LeEco somehow stupidly set up the modem
I got the H901 T-mobile locked off ebay about two years ago. I moved to India recently for work and will stay for a year. As a tmo customer i was able to permanently unlock it using the app it came with before i left the US. I bought a local sim card (Reliance Jio 4G) which uses 4G only (voLTE for calls and data). I checked the frequency bands before getting this sim and it supported 2 of the 3 bands. My problem is that it wont take to the network? (If there is a similar thread please link me to it).
Jio LTE Bands -
FD-LTE B3 (1800 +) (Supported by v10)
FD-LTE B5 (850) (Supported by v10)
TD-LTE B40 (TD 2300) (Unsupported)
I think T-mobile mostly used the 2100 band for LTE in the US. Does this mean that my phone is not taking to the 1800/850 bands or is the cell phone provided not broadcasting over them and just using the 2300 band which is unsupported by my phone?
1) Found the service code *#546368#*901# played around with the bands. (Bands 2, 3, 5 and 20 were a success on this network even though only bands 5 & 3 are supported that was weird) - No luck getting 4G
2) Then forced Band 5 & 3 cause those are my only true options and did rat selection as LTE only. - No luck getting 4G
3) Kept above settings same and went to APN. Saw missing APN and googled the settings. - Success! 4G but no text/calls active.
Trying to figure out how i can get voLTE on this now.
I found a work around with an apk from the service provider that handles calls and texts using LTE. But still cannot text or call using v10's voLTE feature. If anyone knows why i'd like to know. Otherwise, this thread can be closed.
I have recently been getting download speeds of over 700Mbs on T-Mobile, so I was trying to figure out if I was using some of the new Sprint Mid band spectrum - Band n41 (2.5 GHz). LTE discovery says it is on band 66, but that seems to fast for 600Mhz (at least what I have been used to which was just like LTE). Any knowledge would be helpful...
Thanks
Have you tried this app? Works for LTE, not sure if it'll tell you the 5G band, though.
Network Cell Info Lite & Wifi - Apps on Google Play
Signal Strength, Mobile, Wifi, Speed Test, Bad Signals, Cellular, 5G, LTE, 4G
play.google.com
Or try this app, you can select the band you want.
Network Mode Samsung - Apps on Google Play
Network Mode / Band Selection / LTE ONLY for Samsung
play.google.com