3 way carrier aggregation - AT&T Samsung Galaxy S7 Edge Questions & Answers

Hi, a few months ago before the s8 and the s8 plus came out I was blazing thru the internets and was enjoying the 3way carrier aggregation with my s7 edge and at&t. Sadly within the last month I have not seen 3 way carrier aggregation anymore i only see 2 and there's like 4 towers around me (Houston Tx) can anyone here verify of they are getting 3 way carrier aggregation?

xcaliburpcs said:
Hi, a few months ago before the s8 and the s8 plus came out I was blazing thru the internets and was enjoying the 3way carrier aggregation with my s7 edge and at&t. Sadly within the last month I have not seen 3 way carrier aggregation anymore i only see 2 and there's like 4 towers around me (Houston Tx) can anyone here verify of they are getting 3 way carrier aggregation?
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Click to collapse
Update: the first pic is of my s7 edge with the latest update using 2x carrier aggregation and not going to 3x carrier aggregation. Second (if I can upload it) it's an at&t s7 flashed to the T-Mobile firmware of the phone.As you can see that one is doing 3x carrier aggregation on at&t at the same location same time. Did at&t disable 3x carrier aggregation to make the s8 seem faster on their network then the s7?

Second pic

Related

AT&T LTE Speed Difference N910C vs. N910A / Call to give IMEI #?

I am about to return the N910A (AT&T Note 4 version) since i just picked up an N910C (Exynos Unlocked version).
I've done mutliple speedtest.net (via the app) tests and i am not getting the same speeds. I have an LTE Iphone 5C, the N910A and the N910C.
The Iphone and N910A are pulling about 10Mb/s more than the N910C.
The APNs and the SIMs were identical on the N910A and C.
If i call AT&T to provide my IMEI #, do you think my speeds will start to match the iphone 5C and N910A?? Or, since my phone is not carrier branded, i may not be able to match the others' speeds?
Thanks!
pmpntl said:
I am about to return the N910A (AT&T Note 4 version) since i just picked up an N910C (Exynos Unlocked version).
I've done mutliple speedtest.net (via the app) tests and i am not getting the same speeds. I have an LTE Iphone 5C, the N910A and the N910C.
The Iphone and N910A are pulling about 10Mb/s more than the N910C.
The APNs and the SIMs were identical on the N910A and C.
If i call AT&T to provide my IMEI #, do you think my speeds will start to match the iphone 5C and N910A?? Or, since my phone is not carrier branded, i may not be able to match the others' speeds?
Thanks!
Click to expand...
Click to collapse
From my experience, the AT&T representative will "temporarily" remove the LTE restriction placed on your IMEI. The restriction will renew on your next billing cycle. Although you will receive LTE signal on your device, the speed will always be lower than AT&T branded devices because AT&T prioritizes data for carrier branded devices.
how could this be when i've used a nexus 5 for a year now with great LTE speeds. That one was bought unlocked from google. i.e. that is not a specfic carrier branded phone...
pmpntl said:
how could this be when i've used a nexus 5 for a year now with great LTE speeds. That one was bought unlocked from google. i.e. that is not a specfic carrier branded phone...
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Click to collapse
You're correct. Nexus 5 is unbranded phone, but its modem is universal. There are only two models of nexus 5. One for CDMA carriers like Verizon and the other for GSM carriers like AT&T. This is not the case for Galaxy devices. Each model number has its own modem. SM-N910C model uses Ericsson Thor M7450 modem while SM-N910A (AT&T variant) uses Qualcomm MDM9x25M modem. If you utilize BYOD, your phone is flagged as "foreign" and is deprioritized because carriers do not know how much burden your modem is going to put on the network.

Sprint best GS 7 to buy for most carrier support?

I am leaving post paid service and going pre paid.
I since majority if prepaid US carriers are Sprint, T-Mobile and some AT&T. I want a GS 7 that will support all three carriers with as much bands possible.
Any suggestions or does the Sprint version support (once unlocked) support AT&T and T-Mobile.
Technically, any GSM unlocked phone would work on any GSM network, but that wasn't your question.
I ordered the sprint version to use with cricket (at&t network). What I read, the sprint version will support AT&T better than tmobile. In the end, once rooted, you could add in the band's not supported by default.
Music to my ears!
Will have to get the Sprint version and hope for the best.
S7E's sprint version can't turn off shutter camera. But im still happy with the 50%off promo
Has it been confirmed that the s7 uses sprints LTE advanced signal. I can't find a place where it says for sure like the g5's page .
Sent from my Nexus 6 using Tapatalk
bdsullivan said:
Has it been confirmed that the s7 uses sprints LTE advanced signal. I can't find a place where it says for sure like the g5's page .
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
I'd like to know this as well. I seem to get better 4G coverage in my area with the advanced signal enabled compared to my friends who don't support it.
Yes, my new s7 uses lte adavanced
Splash screen says so
VandyCWG said:
Yes, my new s7 uses lte adavanced
Splash screen says so
Click to expand...
Click to collapse
Sweet. I have the nexus 6 now and considering getting one for the SD card access alone. Is there a noticeable difference in data speeds with the LTE advanced, does it offer data and voice at the same time?
Sent from my Nexus 6 using Tapatalk
TehPirate_ said:
I'd like to know this as well. I seem to get better 4G coverage in my area with the advanced signal enabled compared to my friends who don't support it.
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Click to collapse
It just seems that way, or it's because it has a better antenna in general. LTE Plus doesn't get you a stronger signal. The beamforming that helps at the cell edge is a tower-side enhancement. As long as your phone supports band 41, you're able to take advantage of LTE Plus - just not the Carrier Aggregation component.
I am very eager to see what happens in this regard as well. Sprint is notorious about locking down their phones to include very few LTE modes so that the phone is truly only for Sprint. Samsung's CDMA version of the Galaxy phones have been crippled in this way all the way up to the S6.
You can see various phones like the S4, S6, LG G4 and the S7. The S7 CMDA variant does not appear on this comparison chart yet but I'm hoping that it won't need to.
http://www.phonescoop.com/phones/compare.php?p=4066,4769,4773,5081,4928
The last phone in that comparison is the iPhone 6s Plus, which is the same no matter which carrier you use worldwide. I really, really hope Samsung does the same thing.
The only other phones with lots of LTE bands like the iPhone on Sprint is the Nexus 5s/6p and Moto X Pure.
PLEASE let LG and Samsung include all the default LTE modes by default on the CDMA versions of their phones!
Edit: nope, Sprint made Samsung get rid of the most important worldwide LTE band, 7, along with 13 and 20. LAME.
More info here: http://forum.xda-developers.com/showpost.php?p=65825260&postcount=14
I'm thinking of buying the SM-G730P (Sprint) version of the Galaxy S7 even though I was all the years on Verizon and they are for sure the better service and have more coverage, at least here where I live, but the reason I wanna buy Sprint is just because Verizon just makes Samsung phones much more secure, and locks the boot loader, now the question is, First of all does Sprint still lock their LTE phones? And second of all, will an unlocked Sprint phone work on the Verizon network, and will it work overall perfectly when I'm aboard, on the International GSM network? And last of all is there a different in the build of this 2 phones, Verizon S7 and the Sprint S7, besides the bands
YankyA said:
I'm thinking of buying the SM-G730P (Sprint) version of the Galaxy S7 even though I was all the years on Verizon and they are for sure the better service and have more coverage, at least here where I live, but the reason I wanna buy Sprint is just because Verizon just makes Samsung phones much more secure, and locks the boot loader, now the question is, First of all does Sprint still lock their LTE phones? And second of all, will an unlocked Sprint phone work on the Verizon network, and will it work overall perfectly when I'm aboard, on the International GSM network? And last of all is there a different in the build of this 2 phones, Verizon S7 and the Sprint S7, besides the bands
Click to expand...
Click to collapse
Today's news concludes that all US (Qualcomm) variants of the S7 indeed have a locked bootloader except for a select few apparently. Verizon and AT&T lock the bootloader tighter than others, such as Sprint. Sprint and T-Mobile didn't lock the bootloader themselves but rather Samsung. Samsung locked the bootloader to better add security to their consumers and there's been hints they may release an unlock kit/tool for developers but this hasn't been confirmed.
I got Sprint to unlock my G930P and works perfectly with AT&T. The S7, at a hardware level, is the same phone for all US variants where the only thing that changes is the software. Meaning a Sprint phone on the Verizon network would essentially have the same network performance as if you were to use an actual Verizon variant. Once the device is unlocked, at least for me, it knew my sim was on the AT&T network and switched the bands to AT&T on reboot.
Internationally, I'm not sure. There is an option to enable Global bands in one of the hidden menus in self-service but I'd assume it'll cover enough bands to provide you with what you need minimally. (I've never gone international before so can't say from experience)
TehPirate_ said:
Internationally, I'm not sure. There is an option to enable Global bands in one of the hidden menus in self-service but I'd assume it'll cover enough bands to provide you with what you need minimally. (I've never gone international before so can't say from experience)
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GSM will work as expected.
LTE, however, will be crippled depending on the country you go to.
The updated spec list:
http://www.phonescoop.com/phones/phone.php?p=5081
According to that list, Sprint purposely took out three very important LTE bands: 7/13/20. Why does that matter? Because much of the world uses these three bands, especially band 7 and especially Europe! Sprint purposely crippled the LTE radio modes for this phone and I cannot understand why.
So yes, you'll probably get normal GSM and some LTE if they offer one of the other bands but Sprint purposely disabling or deleting the commonly used international LTE modes abroad is just anti-competitive and backwards.
Will rooting or unlocking this phone allow the use of the bands that were locked by Sprint?
asuh said:
The updated spec list:
http://www.phonescoop.com/phones/phone.php?p=5081
but Sprint purposely disabling or deleting the commonly used international LTE modes abroad is just anti-competitive and backwards.
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Click to collapse
gigadigit said:
Will rooting or unlocking this phone allow the use of the bands that were locked by Sprint?
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Click to collapse
http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
VandyCWG said:
Yes, my new s7 uses lte adavanced
Splash screen says so
Click to expand...
Click to collapse
The splash screen says LTE Plus, not LTE Advanced. LTE Plus is simply the new branding for Sprint SPARK. Was that the OPs question?
LTE Plus is not Sprint Spark , its more in depth. Carrier aggregation by antenna beam forming.
For those interested, Sprint is releasing an unlocked S7 that works on all the carriers and has a full range of US LTE bands:
http://www.phonescoop.com/articles/article.php?a=17870

Bad or inconsistent LTE speeds with International S7 Edge Duos on AT&T

Has anyone experienced bad or inconsistent LTE speeds on the International S7 Edge Duos while on AT&T? I was out walking the dog yesterday and my speeds were ranging anywhere from 0.3 megabits/second to 12 megabits/second depending on which block I am on. This morning, on my commute to work, I had anywhere from 2 megabits/second speeds or 32 megabits/second speeds depending on where I am on the road.
Is the International not nearly as good with using AT&T band LTE? Is there perhaps an APN setting I should be making? Or should I just learn to live with this?
Thanks in advance
No one has encountered this at all? Perhaps it's emblematic of a potential defect?
Im on att using g935fd, no issue with lte. Im ranging from 15-30 mbps depending on the area. im in boston,ma
in dallas with a 935FD and i've been getting average 29mb down/19mb up... check your APN and also consider testing with another sim card if you have one available.
I'm having the same issue. There is definitely something going on with the Duos. I'm on T-mobile and experience weaker signal (10-15 dBm) on Duos than I get on my 935T sitting next to it. I've flashed several modems, csc's and firmwares. Nothing has helped. Even lost signal last week at a clinic and had to tether of my wife's T-Mobile s7 edge.
VinylJStar said:
I'm having the same issue. There is definitely something going on with the Duos. I'm on T-mobile and experience weaker signal (10-15 dBm) on Duos than I get on my 935T sitting next to it. I've flashed several modems, csc's and firmwares. Nothing has helped. Even lost signal last week at a clinic and had to tether of my wife's T-Mobile s7 edge.
Click to expand...
Click to collapse
It got so bad that I am returning the phone. The speeds I was getting was just too low to make it a useful device.
Maybe its the rom. What firmware you guys are using? I flashed the stock g935f PHN firmware, CSC, AP and then OntheedgeLite UX rom.
There was another posst with OP having similar issue. I have issue as well. But flashing BTU csc ap bl and cp helped me gain better 4g around my home, so I thought problem was fixed. but when I go to poor reception areas and phone is switching to 2g/3g bands, I lose 4g unless restart or messing with sim options switching 4g between sim1 and sim 2.
currently on stock samsung touchwiz rom. BTU cp, csc, ap, and bl
Is it missing the appropriate at&t bands ? I'm looking at note duos as an alternative to the ATT version a day it's meant to be the same chipset and that misses one of the LTE bands.
Sent from my SAMSUNG-SM-N920A using XDA-Developers mobile app

SM-G950F on T-Mobile US - CSC, WiFi Calling, VoLTE, 256QAM, 4x4 MIMO?

I am considering upgrading to the S8. I like that the G950F has an unlocked bootloader on a phone that has (almost) everything I want.
But it seems like it's a bit of a hassle to get it to work fully on the T-Mobile network. It looks like I can flash the CSC to enable WiFi Calling and VoLTE on it, but is there any hope for 256QAM and 4x4 MIMO? There's hardly any information about this other than one or two threads. So I'd like to know:
If I go with the G950F over the T-Mobile or Unlocked US variants, what am I missing out on out of the box?
What will flashing the T-Mobile CSC not fix? (I currently think it does fix WiFi Calling and VoLTE.)
Can I flash the T-Mobile US modem on the G950F to fix this, or will that just brick my device? (Snapdragon image on Exynos terrifies me.)
Am I missing some other way (like a secret service mode or something) that would allow me to force 256QAM and/or 4x4 MIMO on the G950F?
I really hate that I can't just have a US model with an unlocked bootloader...
I think Galaxy S8 International variant maybe missing some bands and I would suggest you either get T-Mobile as you mentioned or US unlocked. With US unlocked which I already ordered from Samsung, should support all T-Mobile features: VoLTE, Band 12 and WiFi Calling. At the moment Samsung offers $200 off if you trade in any Android or iOS device. Just check their page for Trade-in details.
Charkatak said:
I think Galaxy S8 International variant maybe missing some bands and I would suggest you either get T-Mobile as you mentioned or US unlocked. With US unlocked which I already ordered from Samsung, should support all T-Mobile features: VoLTE, Band 12 and WiFi Calling. At the moment Samsung offers $200 off if you trade in any Android or iOS device. Just check their page for Trade-in details.
Click to expand...
Click to collapse
Can I trade any device?
I got a one plus one somewhere.
borisb said:
Can I trade any device?
I got a one plus one somewhere.
Click to expand...
Click to collapse
I don't see why you can't. It said any Android/iOS device, but just has to be in good condition. Check it out: http://www.samsung.com/us/trade-in/terms-and-conditions/
I'm using an international S8 on Tmobile, works fine. I'm in the middle of nowhere and it actually gets better signal than a Tmobile Pixel and S6 Edge I had before.
sketron13 said:
I'm using an international S8 on Tmobile, works fine. I'm in the middle of nowhere and it actually gets better signal than a Tmobile Pixel and S6 Edge I had before.
Click to expand...
Click to collapse
Does you phone show 4G or 4G LTE?
It has 4G LTE shown
sketron13 said:
It has 4G LTE shown
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Click to collapse
Hmm, I don't remember which bands exactly and how many, but F model had some bands missing for T-Mobile.
Just one night frequency
The exynos variant lacks 4x4 mimo and 256qam from what I've read. It achieves 1gb down via 5xCA. But also only allows it to max upload at 150mb/s
So it would only be able to utilize the 3xCA from tmobile. And not get max possible downloads. But the F does support all 3 of t-mobile's used bands
Acoustichayes said:
The exynos variant lacks 4x4 mimo and 256qam from what I've read. It achieves 1gb down via 5xCA. But also only allows it to max upload at 150mb/s
So it would only be able to utilize the 3xCA from tmobile. And not get max possible downloads. But the F does support all 3 of t-mobile's used bands
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Click to collapse
Got it. That's what I was looking for, thanks. My understanding is that it's a hardware issue that can't easily be fixed via service mode or flashing something, but it doesn't look like I'd miss out on much overall.
I am in a 4x4 MIMO service area though so maybe I'll just hold out for now and see what happens over the next few weeks/months.
Can someone point me to the thread for how to make a sm-g950f have volte and wifi calling on T-Mobile?
My searches turned up nothing concrete if this is possible but I found a Note 8 thread that sounded promising.
Does anyone know if I were to flash the latest Germany T-Mobile firmware (DTM) from Sammobile, would that enable VoLTE, WiFi Calling here in the US?
Currently my G950F S8 has the Australian (XSA) firmware installed and it doesn't have VoLTE or WiFi Calling. The WiFi Calling setting in Quicktiles is greyed out.

Will Unlocked Galaxy S8 work on AT&Ts 5G Evo networks?

I'm considering buying a Galaxy S8, and I'm leaning to the unlocked, except that I want to know if Ill be able to try out AT&Ts 5G. Will I?
Also, if I buy unlocked, do I just put in my ATT SIM card and go or is there some special procedure I need to do?
There is currently no 5G capable devices as of yet you will have to wait until 5G is out of testing phases
Edit: nevermind the s8 and s8+ are 5g capable so it should work wiith just putting in sim
Yes the s8 will work on att's fake 5g network https://www.theverge.com/2017/4/25/...ion-network-lte-advanced-misleading-marketing
customers with a Galaxy S8 and S8 Plus will be able to take advantage of a “5G Evolution” connection at “twice the speeds of [AT&T’s] 4G LTE network.”
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peachpuff said:
Yes the s8 will work on att's fake 5g network https://www.theverge.com/2017/4/25/...ion-network-lte-advanced-misleading-marketing
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Click to collapse
I know the ATT branded one will, but will the unlocked S8 work on their "5G"?
Who knows, whether you will even notice the difference is anyone's guess too.
There is no 5G yet it's all gimmicks in reality it is 4G+ or 4.5G because it's using for examble carrier aggregation 700+800+1800+2600mhz at once and it is combining them for best dl speed. I built those networks my best so far is 430mb/s dl.
OP you should wait for a first hand confirmation. That hardware is ready does not mean it will work.
This is carrier aggregation this is nokia flexi lte this has 3 carriers per sector aka 5G LoL no really its just 4G but it can give speeds up to 450mb or was it more i dont remember

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