carrier aggregation Samsung Galaxy S10+ F/FD models - Samsung Galaxy S10+ Questions & Answers

anyone managed to get into and activate it
even with root, we can't use that menu
s10 exynos has crappy signals on t mobile
hoping i could change that

I have listed here Samsung S10+ EU-models supported combinations: https://cacombos.com/device?model=SM-G975F . EU-models doesn't support T-Mobile low band B71 so this could cause weak signal strength.

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Lte bands at&t

Is there any way to switch the lte bands. Normally I would dial #*#*4636*#*# but the phone information is saying its not available on this device. Both my nexus 6p and my old note 7 got good signal but this phone is horrible as far as signal strength goes.
McQueefus said:
Is there any way to switch the lte bands. Normally I would dial #*#*4636*#*# but the phone information is saying its not available on this device. Both my nexus 6p and my old note 7 got good signal but this phone is horrible as far as signal strength goes.
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this is my question as well. AT&T page for V20 lists LTE bands and band 17 is NOT among them. band 17 is supposedly the main ATT LTE band, which basically means you will only be able to get LTE on V20 on ATT on the backup LTE bands where they are available ...
i'm looking for confirmation that this is true, because who knows - maybe some idiot just forgot to type in number 17 on that info page ...
Notes, iPhones and Pixel all have band 17 ...
obviously i won't be getting iPhone and i can't get the Note. i didn't really want to get the Pixel because i feel like it's overpriced ...
but if what you're saying about V20 getting bad signal is true then Pixel may be the only choice ...
i started having my suspicions about V20 when i heard it won't be coming out in UK, which i thought was very odd ... but apparently one difference between Snapdragon 821 in Pixel and 820 in V20 is that 821 has more LTE bands, which would make it better both for ATT and better as a global phone for travel ...
again, i'm looking for confirmation that this is true.
HELP ???
McQueefus said:
Is there any way to switch the lte bands. Normally I would dial #*#*4636*#*# but the phone information is saying its not available on this device. Both my nexus 6p and my old note 7 got good signal but this phone is horrible as far as signal strength goes.
Click to expand...
Click to collapse
If you're talking about being able to choose specific LTE bands, I do that on my Tmobile handset using this dial code (use at your own risk)
*#546368#*918# - for AT&T you need to use 910 or 915 depending on your model # (not sure why AT&T has 2 different model #'s)
So it would be
*#546368#*910# or *#546368#*915#
Then
Go to Field Test
Modem Settings
LTE Band Selection
Choose band
To revert back to auto scanning
Go to Field Test
Modem Settings
Network Mode
Automatic
nest75068 said:
Go to Field Test
Modem Settings
LTE Band Selection
Choose band
To revert back to auto scanning
Go to Field Test
Modem Settings
Network Mode
Automatic
Click to expand...
Click to collapse
The 910 doesn't have those options under modem settings.
g1981c said:
this is my question as well. AT&T page for V20 lists LTE bands and band 17 is NOT among them. band 17 is supposedly the main ATT LTE band, which basically means you will only be able to get LTE on V20 on ATT on the backup LTE bands where they are available ...
i'm looking for confirmation that this is true, because who knows - maybe some idiot just forgot to type in number 17 on that info page ...
Notes, iPhones and Pixel all have band 17 ...
obviously i won't be getting iPhone and i can't get the Note. i didn't really want to get the Pixel because i feel like it's overpriced ...
but if what you're saying about V20 getting bad signal is true then Pixel may be the only choice ...
i started having my suspicions about V20 when i heard it won't be coming out in UK, which i thought was very odd ... but apparently one difference between Snapdragon 821 in Pixel and 820 in V20 is that 821 has more LTE bands, which would make it better both for ATT and better as a global phone for travel ...
again, i'm looking for confirmation that this is true.
HELP ???
Click to expand...
Click to collapse
THAT IS NOT THE DIFFERENCE. Modem and CPU part of the SOC are totally different things. The pixel is and unlocked and more likely to support more bands as unlocked phones tend to be more globally friendly. Chances are that certain bands are on there but T-Mobile has it disabled or LG. T-Mobile is usually more bands friendly but not always, as the HTC M8 was seriously gimped in the LTE bands, didn't even support T-Mobile's band 12. I would look at the unlocked version of the V20 to decipher more info.
And you're welcome for the undeserved thanks. Your comment made no sense. Qualcomm modems for certain phones are usually about 2-5 different sets depending on markets a phone will serve. It is usually 2 or 3 when the phone is released worldwide basically and every carrier and market will have certain bands disabled for whatever reason. It also rare for developers to enable them as it takes specialized hardware or knowledge of the software. Another factor is if the antenna for certain bands are even in the phone. No antenna for a band then no firmware will ever be able to enable it, much less some hijinks tweaking.
@rbiter said:
THAT IS NOT THE DIFFERENCE. Modem and CPU part of the SOC are totally different things. The pixel is and unlocked and more likely to support more bands as unlocked phones tend to be more globally friendly. Chances are that certain bands are on there but T-Mobile has it disabled or LG. T-Mobile is usually more bands friendly but not always, as the HTC M8 was seriously gimped in the LTE bands, didn't even support T-Mobile's band 12. I would look at the unlocked version of the V20 to decipher more info.
And you're welcome for the undeserved thanks. Your comment made no sense. Qualcomm modems for certain phones are usually about 2-5 different sets depending on markets a phone will serve. It is usually 2 or 3 when the phone is released worldwide basically and every carrier and market will have certain bands disabled for whatever reason. It also rare for developers to enable them as it takes specialized hardware or knowledge of the software. Another factor is if the antenna for certain bands are even in the phone. No antenna for a band then no firmware will ever be able to enable it, much less some hijinks tweaking.
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Click to collapse
OK i followed your advice and looked up Unlocked V20. i'm not allowed to post links yet but from bhphotovideo page the unlocked US version has LTE bands: 2, 3, 4, 5, 7, 12, 13, 17, 20, 25 which includes the band 17 ...
while the ATT page lists LTE bands: 1, 2 ,3, 4, 5, 7, 12, 20, 29, and 30 which does NOT include band 17 ...
now the question is, assuming that information is correct, why on earth would ATT chose the version of a phone that doesn't have the main ATT band ?
is there any way to find out whether the above information is accurate ?
as an ATT subscriber, would there be any advantage / disadvantage for getting unlocked phone from B&H versus ATT branded phone from ATT ?
should i try to contact some sort of ATT technical support to try and get an answer ?
EDIT:
according to article titled "LG V20 Model Numbers (F800, H910, H918, H990 DS Dual, H990N Dual, H990T, LS997, US996, VS995) Differences" from techwalls dot com the ATT version has bands: 1,2,3,4,5,7,12,17,20,30 which again has the band 17. it has same number of bands but compared to information on ATT page it subtracts band 29 and adds band 17 ...
frankly, this makes far more sense than ATT page info, but for 800 bucks i need to know for sure ...
EDIT:
according to frequencycheck website the ATT version of V20 ( H910 / H915 ) supports all ( 8 out of 8 ) bands used by ATT, all 4 LTE bands as well as both GSM and both UMTS bands used by ATT.
according to LG's own website H910 has: 2/4/5/12/29/30, Roaming 1/3/7/20, and CA ... which is the same was what ATT lists except for "CA" ...
Band 12 replaces band 17
The way I understand it, band 12 and band 17 covers the same frequency range. At&t has achieved (they were forced by FCC) interoperability between band 12 and 17 now. So band 17 is essentially obsolete and only useful if you are on the at&t network. If you have band 12 capability on your phone, you can use any 700mhz at&t tower that formerly may have only supported band 17. Now all those towers support both bands. And you can use smaller carrier towers too if you have band 12 capability.

LTE+ plus icon?

Here in Italy I got LTE+ icon with TIM carrier but the speed is almost the same reached in classic LTE: 25mb/s download speed.
The same SIM card used in S7 edge reaches 95 mb/s.
With VODAFONE carrier, instead, I ve never seen the LTE+ icon but just LTE and the speed is about 20-25 mb/s.
Anyone want to share his experience?
Thanks!
Anyone?
LTE+ or 4G+ is at lest a higher form of channel bonding. Try dial code *0011#, *2263# should have band selection,(note this may not always work but did on my note5) it should bring up tower info. Band 2 is [email protected] when LTE+ you will have like band 4 not sure it might be [email protected], this channel bonds to 30mhz with the 20mhz becoming download only vs 10mhz for download and 10mhz upload. The band 4 or whatever your carrier chooses (I have AT&T we use Band 2 and Band 4 as our top bonding, I set Band 2 as favored for default, best performance) becomes the upload only. This makes a + environment like HSPA vs HSPA+.
TechNyne66 said:
LTE+ or 4G+ is at lest a higher form of channel bonding. Try dial code *0011#, *2263# should have band selection,(note this may not always work but did on my note5) it should bring up tower info. Band 2 is [email protected] when LTE+ you will have like band 4 not sure it might be [email protected], this channel bonds to 30mhz with the 20mhz becoming download only vs 10mhz for download and 10mhz upload. The band 4 or whatever your carrier chooses (I have AT&T we use Band 2 and Band 4 as our top bonding, I set Band 2 as favored for default, best performance) becomes the upload only. This makes a + environment like HSPA vs HSPA+.
Click to expand...
Click to collapse
unfortunatelly these codes don't work in italy...
Ive got a couple of questions and wondering if anyone can help.
Gsmarena lists the note fe as cat12, dose anyone know if cat9 would be supported a cat12 device?
Prior to doing any mods on my n935s, i was not getting 4G+ or the highest data speeds using the EE UK network. On my G935F with the same sim card id would get 4G+ and higher data speeds. Im pretty sure that is due to the fact the S7 was able to make use of 3 cell carrier aggregation. The G935F is CAT 9.
I have installed TWRP on my N935S and then installed the Note 7 BTU CSC to see if my N935S can make use of 3CA, however nothing interms of data speeds has changed. I dont think the phone allows the 3CA connection. I can see from the specs that all the nessacery bands are supported by the N935S.
Does anyone have any ideas?

US996 cannot get LTE properly

I just got my factory unlocked US996 version from Ebay. I have 2 sim card tmobile and a Mexico AT&T, both work great on my galaxy s6 (g920t)
But with the new US996:
With the t mobile has LTE, but very poor signal, 1-2 bars indoor and 3 outdoor.
With the Mexico AT&T sim, It stuck with 3G only
According to LG official specs it has all the LTE band G920T has (except band 8), Is there a reason why it's not working as expected?
Is there any service menu or something that I can verify the support bands?
I'm lost

Differences between A320F/DS, A320F, A320FL and Usability in the United States?

Hi,
So, I'm interested in getting a cheap 4.7" Android phone to use in the United States and sometimes in Canada. I zeroed in on the Galaxy A3 2017. The model that works best in North America is the A320Y, but so far I've only been able to find it online at some store in New Zealand. Since finding the answer to the question, Will shipping the device from NZ to the United States cost customs fees (and if so, how much)? is a question harder to answer than the question, Where is Jimmy Hoffa?, I've begun considering getting one of the models listed in the title of this thread.
But there's a problem. Those models in the title don't work on US LTE. Actually, according to frequencycheck.com, the A320FL has one LTE band (Cricket/AT&T) and the other models have none of the LTE frequency bands. I wonder if frequencycheck.com is accurate. I'm also wondering if there are other differences between those models. I'm also wondering what happens if I put a Cricket SIM inside these phones. Even though frequencycheck.com says I will get no LTE bands, will putting a Cricket SIM inside suddenly activate an LTE band?
The other question I was wondering: Do I even need LTE if I don't care much about download speed? Maybe HSPA+ or whatever it is will be good enough? If I don't have LTE, will I get less reception indoors or outdoors, or will I get the same exact reception/coverage but just be relegated to 3G/4G/HSPA+ service? What is the benefit of LTE besides data speed?
Finally, which one of these models has the most ROM support? Can they all be bootloader unlocked?
I know I'm asking a whole bunch of questions at the same time. Sorry. I appreciate any help I can get with this!
To answer some:
That website appears to be accurate. Doesn't only list AT&T for a320fl once expanded.
As for SIMs activating bands, I haven't seen it on Samsung, only RRC Release, VoLTE, LTE CAT, maybe individual CA combos. The disabled bands are shown as CAL_DEFAULT vs CAL_PASS. Guess it's like Snapdragon.
HSPA+ vs LTE
The range of 3G/4G is close with the same frequency, but 4G performs better at cell edge (low signal).
Speed (anyway)
Well, 3G is usually given its own spectrum at first, then the 2G is refarmed into 3G. Today, 3G gets refarmed to 4G. This leaves 3G with a small amount of spectrum, it becomes prone to interference. It's bit like multiple tv/fm stations on the same channel number. Other 'tv/fm stations' have to be filtered out by the phone, this lowers the speed. 4G gets some too, along with echoed complex signals, but it gets less.
3G supports up to 5MHz per carrier, 4G up to 20MHz. 3G can have carrier aggregation, so 5+5+maybe 5. Expect up to 2 carriers (not every combo) on 4G, unless a specific SIM is detected in specific phone models. Along with that, 4G can have better spectral efficiency.
If you are going with 3G(HSPA, sometimes called '4G') anyway, you should know that there are these states (usually called fast dormancy) to save power.
DCH = Full speed.
FACH = Up to 32kbps. 4kB/s. Maybe RRC Release downgrade is visible (H+ to H).
PCH = No data.
Anything below is further away from data.
For high performance, keep the speed above 4kB/s, at the cost of battery. LTE has a faster start.
Sometimes, the speed is simply constrained by backhaul, the internet access that goes to the tower.
Thanks. So, to your knowledge, the F and F DS variants shouldn't work on LTE in the United States? I was in a live chat session with someone on Samsung's UK website and she said that the F variant would work on LTE in the United States. I then sent them an email to confirm and they replied with:
As per our resources from our technical review, the following Network is available in our Samsung Galaxy A3 (2017) for the US.
Network
Band: Quad
GSM 850: YES
GSM 900: YES
GSM 1800: YES
GSM 1900: YES
UMTS 2100: YES
GPRS: YES
4G: YES
HSDPA: YES
Works in the US: YES
I replied to ask them why frequencycheck.com lists no LTE frequencies in common for the F variant on AT&T. I'm so confused.
sm-a320f / sm-a320f/ds
According to every other (not alternating) source the LTE band 2 and band 5 is supported in the US (and the entire spectrum of these bands). So, it supports some bands. Check if the signal of those bands (for your mobile network operator) are available in your location. Ask again, specifically for band 2 LTE(4G).

5G E vs LTE vs 4G

Hey,
I had AT&T simcard inserted into AT&T version of S10+ - it shows 5G E. Inserting same simcard into S10+ Unlocked US version shows LTE.
Then when I inserted same simcard into non-US version of S10+, it suddenly just shows 4G.
However when going to *#0011# it shows LTE in all cases.
What is the difference? Is there any?
5GE doesn't exist, your phone isn't even equipped to work on 5G, it's just a thing your American carrier are doing to mess around.
https://mashable.com/article/sprint-sues-att-fake-5ge-icons/?europe=true
This is complete crap AT&T is doing. Basically fake news made by AT&T.
lahcim2000 said:
Hey,
I had AT&T simcard inserted into AT&T version of S10+ - it shows 5G E. Inserting same simcard into S10+ Unlocked US version shows LTE.
Then when I inserted same simcard into non-US version of S10+, it suddenly just shows 4G.
However when going to *#0011# it shows LTE in all cases.
What is the difference? Is there any?
Click to expand...
Click to collapse
LTE = 4G = 5GE (ATT). In the US 4G can also mean HSPA+ for T Mobile (opposed to 3G or H icon). 5GE encompasses LTE/LTE+.
ATT wants to deceive customers into believing their 5G network is live, even tho that's not the case. Pai (FCC) doesn't seem to be bothered by this. He's busy reducing broadband for the impoverished, crippling availability of internet for rural areas, or location polling. Should be one of these, but I digress.
5G NR & mmWave infrastructure are not ready just yet on all US carriers; tho VZ will demonstrate their 5G tech with the S10 5G according to Vestberg.

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