yashsingh1/xdaforums huggingface dataset:
[Nokia Lumia 920] karlmueller:
There are international versions that HAVE ALL 9 LTE bands enabled and also petaband 3G.

For example in Germany:

http://www.nokia.com/de-de/produkte/smartphones-und-handys/lumia920/technische-daten/ (expand where it says "Basisdaten")

or in Singapore:

http://www.nokia.com/sg-en/products/phone/lumia920/specifications/ (expand where it says "Hardware")

or also in Switzerland:

http://www.nokia.com/ch-de/produkte/smartphones-und-handys/lumia920/technische-daten/ (expand where it says "Basisdaten")

I think there might be a good chance that you can unlock those extra bands on international versions (RM-821) that have them disabled by flashing a different firmware version. However this is just me thinking out loud so please don't blame me if it doesn't work or if it breaks your phone!

However I would strong discourage you from flashing an RM-821 firmware to an RM-820 (North American version) as I know that sb around here almost broke his phone by doing so.
[Nokia Lumia 920] tomdjp:
Hi all

Thanks for your replies so far.

Right now I am using the phone in Japan, where there are three carriers with Band 1 (2100 MHz) LTE networks. I only tried one carrier so far, and yes it is an LTE SIM. As mentioned, I can actually connect to LTE and have used it for several hours, it's just necessary to use an unreliable trick (with ##3282#) to get the phone to see the LTE network. This seems related to the fact there is no 4G option in my highest connection settings.

Thanks for the heads-up on the OTA updates, agreed it's not clear how this will work at all...

Regarding the LTE band support, personally (although it's just my intuition) I think the lists of 9 LTE supported bands on those regional Nokia websites are probably in error (it wouldn't be the first time). Normally the most reliable source in Nokia's website is Nokia Developers, which clearly shows five bands for global RM-821 (1, 3, 7, 8, 20) and four bands for AT&T RM-820 (2, 4, 5, 17).

While the Snapdragon baseband may be able to support all 9 bands, the most difficult part of the design is the RF - filters, amplifiers, etc. So I imagine different RF chains are used in the two variants to support these specific bands.

Again, if anyone has the unlocked RM-821 and tried with an LTE SIM, if you could confirm if the 4G setting is available in highest connection settings, it would be much appreciated.
[Nokia Lumia 920] nMIK-3:
I thought the same thing on PentaBand 3G and 9 Bands LTE, however in another discussion we verified (at least for the German model) that even thought the Nokia German website states PentaBand 3G and 9 Bands LTE, in the retail Box it only mentions QuadBand 3G (AWS missing) and PentaBand LTE.

With the Canadian model being PentaBand and Snapdragon's S4 Specs claiming that is fully supporting it, along with the programmable LTE, we really have no clue of whats really going on until Nokia, or anyone else clarify it...

I have a very bad feeling that the all 920s are PentaBand 3G and support all bands of LTE with programmable software but Nokia for some reason is locking specific bands on specific models/regions.

Hopefully in time we will clarify everything and hopefully its sooner rather than later..
[Nokia Lumia 920] foxbat121:
Different frequency bands require different antenna design. It is probably very difficult to design an antenna that can satisfy all LTE bands even though the chipset can support it. So, instead, Nokia is probably going to selectively make different hardware with different antenna design to fit a specific region. Apple iPhone 5 uses the similar Qualcomm chipset and it only supports very limited LTE bands for international version.
[Nokia Lumia 920] nMIK-3:
For 3G PentaBand is now standard in almost all chips and since the Canadian variant comes with PentaBand on board and the fact that is standard on the S4 I really see no reason of why Nokia will order a custom version of the S4 to just physically take off the AWS. It doesn't make any sense, so if its missing, most likely is turn off in firmware.

For the LTE. Qualcomm introduced a revolutionary technology called Software Defined Radio or simply SDR and the Snapdragon S4 Plus MSM8960 chip which is inside the Lumia 920, supports that technology. With SDR the chipset support all LTE bands from a low to high frequency, it can work in everything between, of course not at the same time, the software programs what frequency the antenna should be set.

If the Lumia 920 and its S4 really have SDR technology, they it will make sense for Nokia to have the firmware deride what LTE to make available to the user, by reading the SIM region and not providing individual updated per region, or based on device product number.

This finally solves a major issue for the manufactures because they do not have to build customs chips for specific countries, the software simply programs it. If you Google it you can find a lot of info regarding SDR. Of course we are not in the engineering team of the Lumia 920 line and its obvious whatever we say here is based on theory and specs that are available to us.
[Nokia Lumia 920] foxbat121:
If you understand radio technology at all, you should know the most important part that make all things work is the radio antenna, not the chipset. The chipset itself can't receive or transmit radio signal without a proper antenna. Try to disconnect your car radio antenna and see how many stations you can receive :)
[Nokia Lumia 920] tomdjp:
We're going a bit off-topic from the thread here, but you're right - SDR defines the baseband, not the RF components.

If you look at Nokia's FCC filing for the RM-821, you can see it has two cellular antennas ("main" and "MIMO") for each of two bands ("HB" high-band and "LB" low-band). Presumably LB is used for bands below 1 GHz or so, while HB is used for bands above. So you can see it's not necessary to have different antennas for every band - bands 1 to 4 (including AWS) could also use the same antennas, for example.

However, each band needs its own RF filters to prevent interference from neighbouring channels, and also needs amplifiers that have flat gain over those bands. These RF components are usually band specific, relatively bulky and expensive, and there are some challenges to use several RF chains in parallel. To my understanding these are the limiting factors that explain why a given device tends to support maximum 4 or 5 LTE channels.
[Nokia Lumia 920] foxbat121:
You nail it.
[Nokia Lumia 920] nMIK-3:
Is that a joke?? I am spending my time explaining what SDR is and I am getting that respond??

I am assuming that I am talking with a person that knows at least a modern chipset like the S4 package contains all the antennas for GSM/WCDMA/LTE a separate antenna for Bluetooth and Wifi, GPS (S4 also includes GLONASS), the CPU and the Adreno GPU.

All the above come in the same tinny chip that in the size of your nail. And all this is called the "chipset". Qualcomm does not use a separate antenna anymore its integrated to the chipset.
[Nokia Lumia 920] tomdjp:
With respect, that's not right - the antennas and RF components are external to the chipset.

Go and get the SAR compliance test report for Nokia 920 from the FCC's website, and you can see diagrams showing the external antennas for cellular, WLAN/BT and GPS which are positioned in various places inside the phone's chassis (btw, the LB MIMO antenna is about 7 cm long!)

Or go and check out the iFixit teardown for iPhone 5 and you can see the same kind of thing...
[Nokia Lumia 920] nMIK-3:
That is correct. Many manufactures are placing antenna extensions and putting additional GPS censor in more practical areas.

The actual GSM/WCDMA/LTE modem WiFi, Bluetooth and GPS for Qualacom solutions are placed inside the chipset.

Please see http://www.qualcomm.com/chipsets/snapdragon for more information.
[Nokia Lumia 920] dougwallace:
4g / LTE

I go into into field test mode and it says 4g then asks what LTE Band. My phone shows 4G not LTE in top left... is it LTE or 3G+?
[Nokia Lumia 920] zok-star:
Does anyone know what the different bands stand for? (band 5 etc) under the field service menu?
[Nokia Lumia 920] tomdjp:
Likely they are LTE bands (e.g. band 5 = 850 MHz), but as you probably noticed they don't completely match with the LTE band support of the device. Keep in mind this field test program was probably thrown together by Nokia's R&D guys for internal testing only (not for consumers), so could be a legacy of earlier testing, another device variant, or some other reason...

Anyway, it seems fine to keep this setting on Automatic.
[Nokia Lumia 920] tomdjp:
Hi Doug, could you share what version of the Lumia 920 you have, and which firmware?

As mentioned in my mail above, there seems no problem to leave the 4G band on automatic, and the bands available to be selected don't seem relevant. (My device picks up Band 1 LTE networks even though band 1 is not in the list).

Regarding 4G vs LTE, my device (unlocked UK CV) shows 4G in the top left when it is connected to LTE. I assume this can be changed by Nokia depending on the operator's requirement (esp in the US where 4G means HSPA...). You can be sure you're on LTE by going back to the field test menu, selecting GSM option, then looking at "Radio Access Technology". If you're on LTE, it should say LTE there.
[Nokia Lumia 920] zok-star:
I've kept mine on all automatic and i have noticed it switch to 4G at times, but then when i go to use it, it'll flick back to 3G... I'll need to test this in CBD sometime this week.

I got my device from clove, but im in Australia on Telstra 4G network. They use 1800mhz.
[Nokia Lumia 920] tomdjp:
Hi, yes better to test in CBD where there's strong LTE signal.

In your Settings => Mobile Network, do you have a "4G" option under "Highest connection speed", or is it 2G and 3G only?
[Nokia Lumia 920] dougwallace:
Useing the Field test is a pain becuase I tend to loss my connection to Koodo when I do this. That said...In Field test for LTE i only get info for band 4 which sounds right. it says Sys Mode Invalid, Idle Status True, Cell ID OOca, EARFCN 2000, TAC 30215, Physical Cell ID 202, RSRP -80 dBm, RSRQ -6 dB, MCC-MNC 302-720.

GSM has no data in it all just NA, ) or invalid. No RAT field at all.

WCDMA has values when i leave as automatic, or set as 3G but blanc when set to any 4g.

From Rogers 45/2012 Firmware 1232.2109.1242.10001
[Nokia Lumia 920] sutt359:
Hi everyone

My UK Lumia 920 came with the EE firmware installed and worked fine on UK Tmobile... Mine had the 4g option in the data speed option. But today i flashed it with the generic GB euro firmware and now the 4G option has gone.

Ive just checked on a friends 820 that came with GB Euro firmware and he doesnt have 4G option.... Hopefully my EE 4G sim will turn up in the next few days so i can test.
[Nokia Lumia 920] tomdjp:
Hi, thanks for this. So this confirms that Nokia have disabled the "4G" option in the Settings (Highest Connection Speed) in the GB Euro firmware.

(As I mentioned before, I still manage to get 4G/LTE working by entering Field Test menu, selecting "4G only", going to "LTE" screen and letting it scan for a few minutes (it should find your LTE network in the MCC-MNC code, even though it won't actually connect at this time), then change setting back to "Automatic", then go back to home screen - after a few secs it connects to 4G if available... although you have to do this every time you reboot, so it's not a great solution).

So Sutt, in your case I'd suggest you flash back to the EE firmware if you want to use LTE, at least for now.

Presumably once the EE exclusivity period is over, the non-EE devices sold in UK will be widely available unlocked, and therefore Nokia would reinstate the 4G option through firmware update...
[Nokia Lumia 920] degsyh:
Something strange happened on my phone today regarding this. Situation: I was on EE's latest FW rom. 4G icon in the top bar and 4G available in settings and everything working fine. Last night decided to flash one of the latest PR1.1 euro roms from Navifirm (Euro 2/ Orange_CH 1232.5951.1249.1003 to be precise). As described in previous posts the 4G option disappeared in settings and highest only upto 3G as expected so no great surprise. I live on the outskirts of an EE 4G area but work in one (Manchester). Usually on my travel in by train the phone will flick between H/H+ and 4G until it usually settles on 4G. Today it flicked between H & "L". Took me a few minutes to wonder what L meant until assuming it must have meant LGE? I even ran a speedtest and got speeds of around 16000kbs! Unfortunately I then think it messed things up by switching between the 2G & 3G options in settings and havent had the L come back since :(

Anyone any ideas what was happening - either the phone had locked onto a higher rate and the setting wasnt actually "set" at 3G max (L being the Swiss F/W variant of 4G) and then when I set it at 3G it actually capped it at 3G, Or was it just some kind of fluke. I'm thinking about re-flashing it again (and not touching the 2g/3g toggle). Another problem with this FW (and I believe the Belgium one as well) is that you can no longer access the field test menu to do any of the tests mentioned in previous posts. Not sure if I would get the field test back if I reflashed the EE rom or not.
[Nokia Lumia 920] bingobill:
The Swiss rom does not have 4G enabled, you need to flash the Belgian which does have 4G enabled.

My 920 was originally a Thailand unlocked with 4G disabled, I flashed the euro GB version which also has 4G disabled.

I've now flashed yesterdays Belgian version and now 4G can be enabled even though I don't have a 4G sim, mine is a 3UK sim.
[Nokia Lumia 920] degsyh:
Brilliant. Cheers for this - assumed both FW would have been kind of the same and opted for the Swiss one due to being the latest one. Checking the web looks like they arent getting 4G until June ;) Have flashed the Belgium one and the 4G option is indeed there. Cant check for sure until I go back into 4G area on Monday but all looks good. Flashing these Nokia's is much easier than my old Omnia 7!
[Nokia Lumia 920] bingobill:
Your 4G should be OK as both EE and the Belgian Proximus use the 1800MHz band.
[Nokia Lumia 920] cao0215:
Anyone got international lumia920 support NA lte?
[Nokia Lumia 920] kpfogey:
did anyone update to portico and find that the Field Test Menu doesn't work anymore? I typed in the ##3282# code in the dialer and it does nothing...

The rom I flashed was the Orange Swiss (CH) version
[Nokia Lumia 920] degsyh:
Yes I've found that - doesnt work on the Belgium Proximus either. I also flashed the CV_GB but didnt check the field test. Anyway just checked now and the new EE f/w is online so just downloading that. Shame about Navifirm being locked down from the end of Jan :(
[Nokia Lumia 920] samusalo:
I had my first 920 from Clove and it had UK CV rom installed and 4G was disabled. Flashed Finnish CV ROM in it and 4G was enabled.

Same thing with the latest 1232.5951.1249.XXXX ROMs.

Latest EE ROM is already in NaviFirm, if you want to flash it.

http://xdaforums.com/showthread.php?t=1971895&page=13
[Nokia Lumia 920] Jonasolof:
Swedish 920 on LTE in Sweden and Belgium

I bought a lumia 920 from Tele2 in Sweden after new year. It is unlocked and works with all operators in Sweden. I tried it on 800, 900 and 2600 using ##3282#, and it allows me to use 4G data.

It also works on LTE 1800 in Belgium with a Proximus 4G ready card.

It appears that the field test is actually designed for american use since it gives the option of locking to LTE bands. 2,4, 5 and 17, none of which is used in Europe. Using the setting automatic, it will search the european bands, depending on the sim card inserted. Using a Swedish telia card, it will only search 800 and 2600, but with a universal telecom/telenor card, it will search 900 and 2600, which are the bands used by telenor to date. However, with this card, it also searches LTE 1800, although that band is not yet operational in Sweden.

In Belgium, with a Proximus card, it will only search and work on LTE1800.

The EARFCN reading tells which frequency block is used via this link (not allowed since this is my first post)

niviuk.free.fr/lte_band.php

If i insert a telia card but no telia LTE cell is heard, the phone will try to attach to cells from another operator and often I saw telenor cells announced under LTE and LTE intra neighbors. This is quite practical to determine which is the strongest cell in the area,, regardless of operator. Of course, there will be no attachment, but at least, these cells are listed, with all signal data. EARFCN gives the frequency block and the national PTT will tell which operator has which block, so you can always identify the operator.

I would like to see the option to lock on european LTE bands also, so I wonder if there is an alternative to ##3282#.

the Lumia 920 is a good instrument for field tests. The only item I lack is the unique cell ID for each cell, since this will often tell you the order of cells on a tower via the last digit on the hexadecimal denomination. What is now given as cell ID is only a hexadecimal version of the Physical Cell ID, PCI, which is already given in decimal. To get unique cell ID, I need to use a Huawei E 392 modem with the huawei connection manager (in my case the telenor branded version, which is totally open).

The relationship bewteen RSSI, RSRP, RSRQ and the number of resource blocks for the given bandwidth is weird with the 920. Results are quite disparate from the readings with the E920 modem, which relate better to the algorithm for RSRQ. I'll try to discuss this with Nokia people at CeBit.
[Nokia Lumia 920] GrahamWager:
##3282 [call] on Portico ROMs
[Nokia Lumia 920] stead:
All i know, with the ee rom i get the options 3g/4g, with the cv gb rom i can choose between 2g/3g

Personally i'd like to be able to switch between all 3, sometimes when travelling i like to use 2g to make the battery last, can you enable it somehow or is the only way to flash a rom that has it enabled?
[Nokia Lumia 920] Jonasolof:
##3282 [call] works on my Swedish 920 same as ##3282#.

i did more tests in Belgium yesterday. There is LTE1800 in a few cities only . I went from Wavre to Leuven which would be two different tracking areas. It was noticeable that the 920 had a difficulty finding a signal. Often signals were lost, although RSRP and RSRQ were quite good when the phone caught on to the net again. So there was a handover problem and a reselection problem which I haven't noticed on LTE 800. This could also be a network problem.
[Nokia Lumia 920] Snow Monkey:
Hi, has anyone had any luck with the no 4g problem on the gb Roms. Should we be waiting for the mythical nokia update or will we be left out In The cold!
[Nokia Lumia 920] F_T_B:
Honestly didn't have the time to read through all these posts, but I can chime in with something useful here.

I have a Lumia 920 RM-821, which I purchased from Orange. The thing came with firmware 1308 and no 4G option in the settings.

I looked at NaviFirm yesterday or the day before (does it really matter when actually?) and saw a minor bump in firmware like from 1308.1 to 1308.2 for my Lumia 920 that is Orange branded.

So I installed that and guess what? The 4G option is there. Nokia must release a new software update to actually enable 4G.

But, if you don't want to wait until that happens you should actually get the Euro 1 Developer firmware (available for the Black Lumia 920 from what I saw) which should work for all RM-821s out there.

It enables 4G in the options and comes with no carrier bloatware of any sort (no stupid bootloader logo as well).

You can find out the details on how to do it here. From what I understand it also seems to unleash all bands, but don't know how to test or confirm that. If anyone knows, please tell me.

Interestingly enough with the developer firmware I also seem to get better signal when I'm inside my place.

It never dropped from H (most I can get right now is H+) -- HSPA/HSPA+ that is -- and I think (but didn't test) that I also get higher data speeds.

It might also be misreporting, but who actually knows without looking into it?

I also tested this with a friend's Galaxy Note II and the Lumia 920 with developer firmware was a tiny bit faster.
[Nokia Lumia 920] Snow Monkey:
Hi

Thanks for the reply, I did have the EE rom on my phone for a while and the 4G worked fine! The real question is will Nokia update the Sim free firmware?

If Nokia are supplying sim free handsets to the UK then surely these phones should support EE's 4G network out of the box but they don't and Nokia are still rolling out updates for the unbranded rom so why haven't they already included support in the 1308 update?

I phoned Nokia support but I could not get them to understand that the standard version rom on my phone does not support 4g, they just kept saying that the 920 was 4g and if I had a 4g enabled sim in a 4g area I would get 4g but as a lot of us know this isn't true!
[Nokia Lumia 920] F_T_B:
I've heard the same thing about 4G enabled SIM. Not sure if it's true or not.

Try to install the developer firmware on your Lumia 920. It's the software that enables the LTE after all.
[Nokia Lumia 920] Snow Monkey:
Hi, I know that if I flash a different firmware the 4G will work I had the EE rom on my phone a while ago. The question is why are Nokia still supplying SIM FREE UK handsets with the 4G switched off and will they be updating this particular rom to support 4G anytime soon?
[Nokia Lumia 920] F_T_B:
Why I am not entirely sure, but I can tell you that generally speaking only operator-branded phones get 4G likely due to the different bands being used.

It could also be Nokia wanting to shoot itself in the leg. That's a common practice.
[Nokia Lumia 920] Snow Monkey:
I understand Nokia's caution but they could roll out an update that allows the sim free handsets to support EE's 4G network and then other networks as they roll out! This is pretty much what this video says.

http://www.youtube.com/watch?v=pxN9DGggktY

The interesting bit is about one minute forty five seconds where he states that Nokia will release updates as networks roll out their 4G networks!

Will they live up to this?
[Nokia Lumia 920] F_T_B:
I honestly don't know. Mobile operators tend to want to keep 4G for their devices, only.
[Nokia Lumia 920] Snow Monkey:
I know that the iPhone 5 currently will only support the frequency for EE in the UK but it was supplied sim free 4G enabled ready to work on EE, I know because I got one!
[Nokia Lumia 920] F_T_B:
Apple was never a company which operators mess with. Whatever you say about the fruit company, it never gets screwed and makes its own rules.

Nokia on the other hand shows that it can release a great phone and succumb to operator desires. My Lumia 920, which was purchased from Orange, never got 4G LTE out of the box and I never got the updated firmware either. I had to manually install it to get 4G LTE (there is an updated carrier firmware for my model).
[Nokia Lumia 920] dmuzial:
NAR Frequency/Band Unlock

Long time lurker, first time poster. Quick question for everyone to make sure I am on the right page. Has anyone developed a way to switch between EU LTE bands and NAR LTE bands? Or is this tied to antenna/chipset?

There was a lot of conversation back and forth about unlocking 4G support in different regions with firmware and whether or not Pentaband LTE was tied to the radio or the chipset. I am looking to purchase a 920 or 1020 for my employer’s BYOD enterprise setup, but my employer supports AT&T. I am currently living in the states, but will be moving to EU later this year with expected travel in all 3 ITU regions. I would prefer not to be tied to the US 2, 4, 5, 17.
[Nokia Lumia 920] jamesdoc:
Try going into Nokia repair and asking them to sort this, i had same problem, no 4G when on EE. What was point of selling 4G enabled handset if it wasn't enabled. Repaired and works a treat now!
[XPERIA X8 Q&A, Help & Troubleshooting] vuiseng:
why i use Gingerdx v29 + naa14 ........ the wifi cant use.........how to fix it ??
[XPERIA X8 Q&A, Help & Troubleshooting] fifo171:
Try to reinstall the ROM with full wipe. :)