Develop Bugs

Difference between 4G and LTE?

LTE and 4G are the same? because i know that glide doesnt has lte, but when i use the mobile data, i see the 4G icon. i always have that question. thanks

4g is hsdpa+, which is slightly above 3g, but not quite 4g. It still is fast enough
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Laugher19 said:
4g is hsdpa+, which is slightly above 3g, but not quite 4g. It still is fast enough
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Then , is better than 3.5G ? (here we know that like 3g and 3.5g). Thanks, for your help thats clear me that question (sorry for my english )

It pretty much is 3.5g.
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To give you an idea, LTE can "theoretically" max at 300 mbps (mbps = mega bits per second -- most carriers/ISP's provide this), which would translate to 37.5 megabytes/sec. Do you get that now? Very unlikely. Friends who have LTE are only getting around 24 mbps, which is still really fast.
HSPA+, which is what AT&T's "4G" (not 4G LTE -- it's the 3.5G) as well as T-Mobile's has a peak of about 42 mbps -- and I've seen folks here (Houston) get really close to that in speed -- which translates to a little over 5 megabytes/sec.
T-Mo and AT&T are actively working to get more and more LTE towers and service created (they have HSPA+). T-Mo hasn't rolled theirs out at all, except I think for testing in a few select, small markets, if I remember correctly. AT&T has service in LTE already established.
LTE is the way of the future at the moment. Kind of like the HD-DVD vs bluray debacle years ago -- LTE won out over another 4G technology, WiMax, which was on several earlier phones on Sprint. Sprint finally conceded it lost and start building out an LTE network to replace their WiMax one.
Hopefully, that's a NICE BIG chunk of knowledge that you can partially digest.

terinfire said:
To give you an idea, LTE can "theoretically" max at 300 mbps (mbps = mega bits per second -- most carriers/ISP's provide this), which would translate to 37.5 megabytes/sec. Do you get that now? Very unlikely. Friends who have LTE are only getting around 24 mbps, which is still really fast.
HSPA+, which is what AT&T's "4G" (not 4G LTE -- it's the 3.5G) as well as T-Mobile's has a peak of about 42 mbps -- and I've seen folks here (Houston) get really close to that in speed -- which translates to a little over 5 megabytes/sec.
T-Mo and AT&T are actively working to get more and more LTE towers and service created (they have HSPA+). T-Mo hasn't rolled theirs out at all, except I think for testing in a few select, small markets, if I remember correctly. AT&T has service in LTE already established.
LTE is the way of the future at the moment. Kind of like the HD-DVD vs bluray debacle years ago -- LTE won out over another 4G technology, WiMax, which was on several earlier phones on Sprint. Sprint finally conceded it lost and start building out an LTE network to replace their WiMax one.
Hopefully, that's a NICE BIG chunk of knowledge that you can partially digest.
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Ya it's a huge difference, put it like this;
We get 3mbps and LTE gets 30mbps. Of course I am over simplifying things but LTE is about 10X faster then 3G which is what we have.

dudejb said:
Ya it's a huge difference, put it like this;
We get 3mbps and LTE gets 30mbps. Of course I am over simplifying things but LTE is about 10X faster then 3G which is what we have.
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Depends on where they're deployed, though. At the moment, in my mind, though, HSPA+ is fast enough. LTE is nice and important for future-proofing, but I don't see a need for it for another... probably 3-5 years. Keep in mind, most people's home internet is like 3-12 mbps on average. HSPA+ current results for my city are WELL above this for all providers.
You realize that Cappy Glide can get HSPA+ which goes up to 42mbps -- you could theoretically download at > 5 megabytes/sec under ideal circumstances... I currently pull around 1-2 megabytes/sec... Why would you ever need more on this current gen -- especially with data-capping?

Just saying I have a friend on the same cellular provider as me and he has that new Windows Phone from Nokia on LTE and me with the glide. We did a speed test and I got around 2.5mbps and he got 25.mbps. I agree for everyday stuff 2.5 mbps is enough, but I just have to say I was drooling when I saw the speed he was getting on Rogers which is whoI have.
I have 2 years left on my Contract and I am happy with my Glide but for sure in 2 years I will make sure my next phone is a LTE device. I have a 6Gigs download cap so I am not to worried about caps after all it is a cell phone and 6 gigs should be plenty.

Fair enough -- seems that Rogers is much different as a carrier than the ones here in the US. I've had friends on HSPA+ on T-Mobile at like 30ish mbps and friends on LTE on Verizon at 35 mbps. It wasn't a super big difference. But until you hit double-digits on the speed, I can totally understand the drool you emit and why.

thanks, thats clear e a lot i always think that 4G was behind of lte but better than 3.5G, because my glide is the unique phone that i see with 4G icon (all the phones here only has 3G icon or H+ and the modems wcdma or Hsdpa) i am not in USA or Canada

I wouldnt say that 4G is HSDPA+ ..
Let's get back to begining ...
1. GSM (2G) 9.6 kbps,
2. GPRS (2G) 40 kbps
3. EDGE (2G) 120 kbps
4. WCDMA (3G) = UMTS and HSDPA 14Mbps
5. HSPA and HSUPA (3.5G) = HSPA+ 28Mbps (unreal speeds / market speeds)
6. DC-HSDPA (4G) 42Mbps and up (unreal speeds / market speeds)
7. OFDMA (LTE/WiMAX) 100Mbps (unreal speeds / market speeds)
Here is reality : http://www.zdnet.com/au/speed-test-how-fast-is-4g-really-7000007995/

iEthos said:
I wouldnt say that 4G is HSDPA+ ..
Let's get back to begining ...
1. GSM (2G) 9.6 kbps,
2. GPRS (2G) 40 kbps
3. EDGE (2G) 120 kbps
4. WCDMA (3G) = UMTS and HSDPA 14Mbps
5. HSPA and HSUPA (3.5G) = HSPA+ 28Mbps (unreal speeds / market speeds)
6. DC-HSDPA (4G) 42Mbps and up (unreal speeds / market speeds)
7. OFDMA (LTE/WiMAX) 100Mbps (unreal speeds / market speeds)
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That table is misleading. Most cablecos have rolled out DOCSIS3, capable of 50Mbps at the low end, yet you'd be lucky if there's a 20Mbps package available at all. VDSL is a similar story. Realistically, you're gonna see one, maybe two Mbps real-world, even on LTE. When you're talking about actual bandwidth delivered to your device, you won't see ANY improvement upgrading past UMTS. In the US market, all the benefits of the newer technologies are exclusively on the side of the carriers -- you will see nothing.
Stay on WiFi, folks.

roothorick said:
That table is misleading. Most cablecos have rolled out DOCSIS3, capable of 50Mbps at the low end, yet you'd be lucky if there's a 20Mbps package available at all. VDSL is a similar story. Realistically, you're gonna see one, maybe two Mbps real-world, even on LTE. When you're talking about actual bandwidth delivered to your device, you won't see ANY improvement upgrading past UMTS. In the US market, all the benefits of the newer technologies are exclusively on the side of the carriers -- you will see nothing.
Stay on WiFi, folks.
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Man I don't know what u talking your words are misleading.. sorry

roothorick said:
That table is misleading. Most cablecos have rolled out DOCSIS3, capable of 50Mbps at the low end, yet you'd be lucky if there's a 20Mbps package available at all. VDSL is a similar story. Realistically, you're gonna see one, maybe two Mbps real-world, even on LTE. When you're talking about actual bandwidth delivered to your device, you won't see ANY improvement upgrading past UMTS. In the US market, all the benefits of the newer technologies are exclusively on the side of the carriers -- you will see nothing.
Stay on WiFi, folks.
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Lololololololol now that I've laughed enough. Play an online game on UMTS and on LTE or download a file or game or video the come talk to me. LTE is not just for the benefits of the carriers.
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enik_fox said:
Lololololololol now that I've laughed enough. Play an online game on UMTS and on LTE or download a file or game or video the come talk to me. LTE is not just for the benefits of the carriers.
Sent from my SPH-L710 using Tapatalk 2
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OK u are the maaan

The Captivate Glide on AT&T in the US is capable of a rated 21Mbps maximum speed...I have one on a NET10/AT&T SIM in Los Angeles and have so far seen up to 11Mbps in speed tests, but it can also be much slower, dependent on the traffic on the network where I happen to be - the phone's indicator nearly always says "4G" even if my download speeds are less than 500k. If you have a Samsung Relay on T-Mobile (the closest phone to the Captivate Glide design-wise) it has a max rated speed of 42Mbps, and the T-Mobile network usually has faster average data speeds regardless, as long as you're on 4G, but their network is smaller. At this point I'm paying $46 a month on NET10/AT&T versus $55 a month on Page Plus for a 3G phone that maxes at 2.5Mbps (usually around 1200k) on Verizon's network, both with 2GB of data (I use WiFi as much as possible). For my needs I'm willing to spend a lot less with a MVNO prepaid network and live with the HSPA+, rather than paying $100 a month and up for LTE on Verizon, AT&T or Sprint - LTE is also a big battery hog. The fact I was able to get a slightly used Glide for around $100 helped as well, rather than paying hundreds more for an LTE phone and/or being locked into an expensive contract.

TVCCS said:
The Captivate Glide on AT&T in the US is capable of a rated 21Mbps maximum speed...I have one on a NET10/AT&T SIM in Los Angeles and have so far seen up to 11Mbps in speed tests, but it can also be much slower, dependent on the traffic on the network where I happen to be - the phone's indicator nearly always says "4G" even if my download speeds are less than 500k. If you have a Samsung Relay on T-Mobile (the closest phone to the Captivate Glide design-wise) it has a max rated speed of 42Mbps, and the T-Mobile network usually has faster average data speeds regardless, as long as you're on 4G, but their network is smaller. At this point I'm paying $46 a month on NET10/AT&T versus $55 a month on Page Plus for a 3G phone that maxes at 2.5Mbps (usually around 1200k) on Verizon's network, both with 2GB of data (I use WiFi as much as possible). For my needs I'm willing to spend a lot less with a MVNO prepaid network and live with the HSPA+, rather than paying $100 a month and up for LTE on Verizon, AT&T or Sprint - LTE is also a big battery hog. The fact I was able to get a slightly used Glide for around $100 helped as well, rather than paying hundreds more for an LTE phone and/or being locked into an expensive contract.
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UUf i would never pay so much ..
I have one contract for 12 months (sim only) so am locked but am paying £15 a month and I have unlimited internet and unlim. SMS , then 600 minutes that my girlfriend uses .. (she never use all 600 minutes .. she is texting more ..)
And I had Giff Gaff previously .. it is based on O2 but it is cheaper and it is sim only . I used to pay £10 a month for unlimited internet unlim. texts and 250 minutes .. BUT they increased package to £12 so I started NOT liking it cos speed is not as fast as on 3 network
So I have decided to go with 3 network (same as my girlfriend) but it is SIM only pay as u go so it is 15 pounds a month no contract am not locked and I have same package as girlfriend but NOT 600 minutes but 300 minutes of call .. and that is way enough for me .. internet and SMS unlimited that is my priority..

I don't get Hspa+ connection everywhere.

I have a Note II Factory unlocked international edition. I also have a $30 Prepaid plan from T-Mobile which is supposed to give me 4G speeds. I dont get them everywhere. At my house i get the 4G speed however when i go to my school which is a mile away. I only get Edge Connection and sometimes out of the blue i get 4G speed back again. Whats wrong with my phone not gewtting those speeds everywhere? its really annoying

My guess is their 4G isn't rolled out wherever your school is.
Or it could be the signal being blocked by all the walls and **** in your school.
It's not a problem with your phone, it's the network itself.

japjeev said:
I have a Note II Factory unlocked international edition. I also have a $30 Prepaid plan from T-Mobile which is supposed to give me 4G speeds. I dont get them everywhere. At my house i get the 4G speed however when i go to my school which is a mile away. I only get Edge Connection and sometimes out of the blue i get 4G speed back again. Whats wrong with my phone not gewtting those speeds everywhere? its really annoying
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I just got my 7100 unlocked as well and I am on the same plan you are on (its a great deal right?). I have the same problem, I'm stuck on EDGE at home (I'm on wi-fi so its not a big deal) but when I am at work my phone goes crazy. It will switch between H+, H, 3g and EDGE all day long. It will have seizures. The crazy thing is, work is about 10 away from my house so....???
I've been trying to unlock the 1700 band but it may not be possible on the GT-7100. when hitting *#7284#. You're supposed to go into the "Qualcomm usb settings" but that option does not exist on my phone. Anywhere. Its just not there. So I'm stuck.
I know Tmobile is in the process of refarming their network to 1900, but I have no idea when they are going to complete that project. Anyone know?
It may turn out that we'll have to either put up with the EDGE speeds or go with Straight Talk...

Pretty much what the guy beneath you has said. I not every provider guarantees that you will get the same speed everywhere. Not even to mention that tmobile is the only major provider in europe with very very bad coverage.
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Ironarm said:
I just got my 7100 unlocked as well and I am on the same plan you are on (its a great deal right?). I have the same problem, I'm stuck on EDGE at home (I'm on wi-fi so its not a big deal) but when I am at work my phone goes crazy. It will switch between H+, H, 3g and EDGE all day long. It will have seizures. The crazy thing is, work is about 10 away from my house so....???
I've been trying to unlock the 1700 band but it may not be possible on the GT-7100. when hitting *#7284#. You're supposed to go into the "Qualcomm usb settings" but that option does not exist on my phone. Anywhere. Its just not there. So I'm stuck.
I know Tmobile is in the process of refarming their network to 1900, but I have no idea when they are going to complete that project. Anyone know?
It may turn out that we'll have to either put up with the EDGE speeds or go with Straight Talk...
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Yes exactly the problem i am facing. its very frustrating. My phone switches with all day long it mostly stays on Edge though.

This has nothing to do with your phone. Tmobile USA has not rolled out the compatible 3G frequency yet.
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Deusdies said:
This has nothing to do with your phone. Tmobile USA has not rolled out the compatible 3G frequency yet.
Sent from my GT-N7100 using xda app-developers app
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How come my freind who has a S3 gets better signal and better speeds at the same place?

japjeev said:
How come my freind who has a S3 gets better signal and better speeds at the same place?
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He might have a version that supports the 1700 band

Verizon Gnote2 on Tmobile?

I have a verizon Gnote 2 that i want to connect on Tmobile but obviously i have a couple question that concern me...
Ive researched as much as i could but still trying to get a clearer answer.
First: To connect verizon Gnote2 on tmobile you just have to put in the tmobile sim card and you get voice calls, sms, but no mms you had to unlock or root it first so you could change the apn's ..
but now with the newest update you dont have to do all that Verizon has made it fully unlocked.. so it easier to change the apns settings (which i still need to find what they are)
I see that the V Gnote 2 supports the 1900 and 2100mhz freq.. but not the 1700 and to be able to have complete LTE or HSPA 42+ connection the phone has to support both 1700 and 2100.. Tmobile is revamping the 1900 to become 4g connection but is not available in all areas so thats a hit or miss.. Heres a map showing an idea of were the 1900 mhz freq is supposively running
So my question on this in the areas where there isnt 1900 mhz band (Which 4g) then when on the other freq then i would be on 3g or 2g(edge) and if on Edge what are Tmobile edge speeds? 1mbps download atleast? or worse
Also Since i would have a GSM sim card in it and on GSM networks you could Talk and Surf the web at the same time then technically i should also be able to as well correct?
Ive read that i believe its on Jelly or Jedi rom it enabels HSPA+ is this true? also im good if i just get H support which is 3g
many more questions but post is getting too long and I know that just going out and getting a T mobile sim will help me get all my answers just dont want to go out and waste money for no reason....
all the threads i read
http://forum.xda-developers.com/showthread.php?t=2279177
http://forum.xda-developers.com/showthread.php?t=2201461
http://forum.xda-developers.com/showthread.php?t=2266530
http://forum.xda-developers.com/showthread.php?t=2159510
http://forum.xda-developers.com/showthread.php?t=2183119
and others on other forums as well.
TIA for all replys
EDIT: just spoked to a Tmobile C.S. rep and she asked me for the model # on the note2 and said she checked and also asked her supervisor and both stated that the phone would support full 4g

I had a S3 that was from ATT. Bands same at the Verizon Note 2. Although they are re farming, I always had edge and 3g it sucked..
Sent from my SGH-T889 using xda app-developers app

You_got_owned123 said:
I had a S3 that was from ATT. Bands same at the Verizon Note 2. Although they are re farming, I always had edge and 3g it sucked..
Sent from my SGH-T889 using xda app-developers app
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What download speeds were you getting?

Ma$etas said:
What download speeds were you getting?
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I had a Verizon GN2 that I tried on T-Mo (before trading with someone for an actual t-mo N2) and it was mostly Edge. Edge speeds are total garbage on a phone such as this. It takes 5 minutes just to load facebook.I loved the plan ($30 mo on t-mo) and wanted to keep it so I traded.

[Q] Cell phone repeater

Acording to
T-MOBILE
Get more from life.®
SYSTEM: 1900 MHz, 1.7/2.1 GHz
TECHNOLOGY: GSM / GPRS, EDGE, UMTS, LTE Planned
THe area i am in uses all three, 1900 1700 2100 mhz bands, so if i get a 1900 MHz cell phone repeater, that will improve my 3g/HSPA+ signal?
Not sure what frequencies are used for T-Mobile HSPA(+) services anymore with all the refarming and such going on. Thanks guys

elesbb said:
Acording to
T-MOBILE
Get more from life.®
SYSTEM: 1900 MHz, 1.7/2.1 GHz
TECHNOLOGY: GSM / GPRS, EDGE, UMTS, LTE Planned
THe area i am in uses all three, 1900 1700 2100 mhz bands, so if i get a 1900 MHz cell phone repeater, that will improve my 3g/HSPA+ signal?
Not sure what frequencies are used for T-Mobile HSPA(+) services anymore with all the refarming and such going on. Thanks guys
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where do you plan on getting yours from? would rather have a repeater then stay on touchwiz just for wifi calling

In for the info. I need a little bump in signal at the house.
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I could go for an LTE repeater
Sent from my GT-I9505G using xda premium

Have you tried calling T-Mobile about that? I'm sure that if you talked to someone deep enough in the customer service/technical support they would be able to give you an answer.

TheAtheistOtaku said:
where do you plan on getting yours from? would rather have a repeater then stay on touchwiz just for wifi calling
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EBay. They have a huge selection and from what I've found online the Dr cell brands are very good and last forever. They range from about 140 and up. Which sucks lol.
Stangpwr71 said:
In for the info. I need a little bump in signal at the house.
Sent from my SGH-M919 using xda app-developers app
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so far from what I'm discovering, if your area has the refarmed towers to support the HSPA+ 1900 MHz frequency, then a 1900 repeater will work. Otherwise, you will need an AWS repeater. I'm thinking of getting the 1900 one. Every website I've found states that's supported in my area. Can always return it.
lordcheeto03 said:
Have you tried calling T-Mobile about that? I'm sure that if you talked to someone deep enough in the customer service/technical support they would be able to give you an answer.
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Hoping to avoid a 2 hour call that once I hit the right person will end in 2 minutes xD but I might web chat them.
And lte repeaters are very pricey! Lol
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I would be purchasing from Ebay, or Amazon. There is just a couple places in my house the signal goes in and out abd would like to fix that.
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elesbb said:
Hoping to avoid a 2 hour call that once I hit the right person will end in 2 minutes xD but I might web chat them.
And lte repeaters are very pricey! Lol
Sent from my SGH-M919 using Tapatalk 2
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Oh I understand, but for a $140+ investment, I'd rather take the time and make sure it's right than be all like "Well... that sucks." It's funny you posted this because I was thinking about the whole repeater thing the other day and after seeing the prices I decided to go ahead and stop researching lol.

lordcheeto03 said:
Oh I understand, but for a $140+ investment, I'd rather take the time and make sure it's right than be all like "Well... that sucks." It's funny you posted this because I was thinking about the whole repeater thing the other day and after seeing the prices I decided to go ahead and stop researching lol.
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Very true lol. But what i ended up doing was finding one of those Cel-Fi signal boosters from T-Mobile themselves that boosts the AWS frequency band (which i know is in my area) for 90 bucks BNIB (just opened) so hopefully that helps!
But i have done some more research, and after many articles of online posts, so long as your area has the refarmed towers to put out HSPA(+) on the 1900 MHz spectrum then any GSM 1900 MHz repeater will work. Just make sure its GSM and NOT CDMA. If you don't have the 1900 MHz band in your area. Then a GSM 1700 MHz repeater will work (thats pretty much what the Cel-Fi is) Can't wait! No more dead spots!
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2

You can get them for no cost from tmobile if you are on a classic plan. Not sure about other plans. They are out of stock right now. I am on the wait list.

jcbofkc said:
You can get them for no cost from tmobile if you are on a classic plan. Not sure about other plans. They are out of stock right now. I am on the wait list.
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You have to meet certain specifications. Which I don't think I meet. Plus according to their website, they are no longer available
Sent from my SGH-M919 using Tapatalk 2

Just an update. Got my T-Mobile Cel-Fi repeater just now. And it's working ^-^
I now get 4g in my basement! Just wish the output power of the broadcast was stronger. Barely reaches my room.
Sent from my SGH-M919 using Tapatalk 2

Ridiculous data speeds while on a call

Ok... I have gone round and round and round and round with AT&T on this issue. My data is nearly unusable while on a call. Most of the time it times out, and when it does work, it is ridiculously slow.
I have gone through the stores, technical support, wrote their corporate headquarters (which got no response whatsoever), Twitter, and finally I filed a complaint with the FCC.
The FCC complaint is where I am now, and they want to work with me on this issue. They keep focusing on the towers in my area (although it happens EVERYWHERE), and my phone (even though this is my second phone). Basically I am tired of wasting my time with this issue, and I want to point them to this thread to tell them this this is NOT just me. Maybe it is the Note 2, but I think it is their network. Hopefully this thread will tell me AND THEM.
So with that said, I would love for everyone to post their City/State, and 2 speed tests (one while on a call and one while not on a call). Not moving would be preferable.
I will post mine shortly.

Tampa Bay North
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4

Not sure why you so frustrated. But signal's are suppose to drop while on a call!! Your using data, and yes we can be on the web and be on a call at the same time. I've been doing it since I was first on AT&T. :thumbup:
But I'm thinking it's your area or the modem. Here's my results after reading your post. I decided to go out for breakfast and perform this test to see if it was that BAD! :what:
Here's my results:
NO CALL HERE
ON CALL NOW
Still above 10 mb down. BUT IT DID DROP DRASTICALLY BECAUSE I'M NO LONGER ON LTE CONNECTION.
Just my 2¢®
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4

To answer your question, I am upset because they advertise themselves as being able to use voice and data simultaneously and I can barely use my data while on a call. Most of the time it times out and I constantly have to redo my request. I think my problem is the ability to send data (which include acknowledgements and the request). I don't so much mind that it slows down, but being nearly unusable is a whole other story.
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Milkman00 said:
To answer your question, I am upset because they advertise themselves as being able to use voice and data simultaneously and I can barely use my data while on a call. Most of the time it times out and I constantly have to redo my request. I think my problem is the ability to send data (which include acknowledgements and the request). I don't so much mind that it slows down, but being nearly unusable is a whole other story.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4
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And that I have been able to do always. Be on a call and the web. But I understand your frustration on it not writing when you want. And it being so slow.
Not sure what Rom, modem your using? But I don't really see that much of a problem. Unless I'm inside of a metal building!!
Lol
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Yeah look at my on call upload speed compared to you. Definitely a problem.
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Milkman00 said:
Yeah look at my on call upload speed compared to you. Definitely a problem.
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I agree with you completely. On that note! What modem are you using. Take a screen shot of your about phone. Just curious if that is what is causing your problem. Wondering if your on the latest modem release..
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I am rooted stock.

4.1.2
i317ucamc3
3.0.31-578342

As an RBS Engineer I can explain why this happens to you.
Its due to a few reasons
1. What frequency is 1st carrier in your market 1900mhz or 850mhz
2. How many carriers are in your particular area (the most i have seen is 5 in the major metro areas)
3. How far away the next tower is to you
4. How saturated each carrier is
Whwn testing a new LTE site i will get 30-50mbps download and 20mbps up
Thats cuz im the ONLY one on the carrier at the time.
So a tower is made up of carriers, each carrier has sectors with a corresponding antenna that face a different direction (Alpha Beta Gamma)
You have multiple carriers in areas where theres heavy traffic.
now back to your phone its multi banded 1900, 850, 700/2100(lte)
If your market is 850 first carrier and 850 second carrier your data while on the phone will be almost non existent becuase that band on your phone is in use with your call. But if you have 850 1st carrier then 1900 second carrier or vice versa then your speeds will be decent. For whatever reason when you place a call your data automatically switches to HSPA most likely due to the VOIP on the LTE band leaving only the 3g band for data. Now I dont engineer the network itself becuase I dont understand why LTE isnt left open for data while were on calls.
I dont know if i confused you more or if that helped.
Hope it helped though
Its like a highway
A carrier is a single highway with multiple lanes 850mhz 1900mhz 700mhz(for lte 1st carrier) and 2100 (for lte 2nd)
If your area has only 2 carriers 850mhz and 850mhz its like 2 lanes on a highway going in the same direction and the other side of the highway is blocked
If its 850mhz and 1900mhz but there is heavy traffic and not enough carriers its like bieng stuck in 5 o clock traffic and trying to turn around. Its busy on both lanes so everything is slow
Each carrier adds lanes for traffic in a typical metro area you will see someting like
1st carrier 850mhz
2nd 850mhz
3rd 1900mhz
4th 850 mhz
5th 1900 mhz
LTE 1st carrier 700mhz
LTE 2nd Carrier 2100mhz
Thats a lot of lanes for traffic

tramane said:
As an RBS Engineer I can explain why this happens to you.
Its due to a few reasons
1. What frequency is 1st carrier in your market 1900mhz or 850mhz
2. How many carriers are in your particular area (the most i have seen is 5 in the major metro areas)
3. How far away the next tower is to you
4. How saturated each carrier is
Whwn testing a new LTE site i will get 30-50mbps download and 20mbps up
Thats cuz im the ONLY one on the carrier at the time.
So a tower is made up of carriers, each carrier has sectors with a corresponding antenna that face a different direction (Alpha Beta Gamma)
You have multiple carriers in areas where theres heavy traffic.
now back to your phone its multi banded 1900, 850, 700/2100(lte)
If your market is 850 first carrier and 850 second carrier your data while on the phone will be almost non existent becuase that band on your phone is in use with your call. But if you have 850 1st carrier then 1900 second carrier or vice versa then your speeds will be decent. For whatever reason when you place a call your data automatically switches to HSPA most likely due to the VOIP on the LTE band leaving only the 3g band for data. Now I dont engineer the network itself becuase I dont understand why LTE isnt left open for data while were on calls.
I dont know if i confused you more or if that helped.
Hope it helped though
Its like a highway
A carrier is a single highway with multiple lanes 850mhz 1900mhz 700mhz(for lte 1st carrier) and 2100 (for lte 2nd)
If your area has only 2 carriers 850mhz and 850mhz its like 2 lanes on a highway going in the same direction and the other side of the highway is blocked
If its 850mhz and 1900mhz but there is heavy traffic and not enough carriers its like bieng stuck in 5 o clock traffic and trying to turn around. Its busy on both lanes so everything is slow
Each carrier adds lanes for traffic in a typical metro area you will see someting like
1st carrier 850mhz
2nd 850mhz
3rd 1900mhz
4th 850 mhz
5th 1900 mhz
LTE 1st carrier 700mhz
LTE 2nd Carrier 2100mhz
Thats a lot of lanes for traffic
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Click to collapse
Well it seems to happen everywhere that I go which is as far as 70 miles in any direction. The big 3 are in my area (Sprint, AT&T, and Verizon) as well as T-Mobile and Metro (but I am not sure if Metro is their own or they use other carriers).
The major metro areas that I visit are Tampa and Orlando and they do the same thing. I live in a rural area (so the towers are not very saturated), and there is a tower about 1.5 miles (tops) in either direction of me.
I am not sure what frequency my area is. How can I tell?

This is expected. AT&T doesn't support voice over LTE yet, so when you place a phone call the modem needs to switch back to the 3G/Fake 4G HSPA+ network. I'm guessing you just have poor 4G reception. Can you disable LTE and then do a speedtest on the regular 4G network?

Prior to the LTE implementation I was getting far better speeds on the HSPA+ network..
How do I disable LTE to get a current HSPA+ test?
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4

Looks like this might be the easiest way: http://forums.androidcentral.com/t-...3-you-can-disable-hspa-too-2.html#post2551614
Edit: while on a call I get 1663Kbps down and just 93Kbps up, so this might not be unique to you.

saturnspike said:
This is expected. AT&T doesn't support voice over LTE yet, so when you place a phone call the modem needs to switch back to the 3G/Fake 4G HSPA+ network. I'm guessing you just have poor 4G reception. Can you disable LTE and then do a speedtest on the regular 4G network?
Click to expand...
Click to collapse
On HSPA+ I get 2.2 meg down and almost 1 meg up (910k).
FAR better than what I get while on a call in an LTE area.

OK after reading this thread. Do y'all think this problem will be fixed for the Note 3 because I read the note 3 will have the strongest LTE chip available? Or will it be determined on how heavy data traffic is on your frequency?

At&t hasn't supported voice+LTE data. Its the original voice+3G data. Its not the phone.

A given market can be very large it can encompass a whole state. I work in the south texas market which is basically EVERYTHING south of killeen texas. I have driven as far as 6hrs to south padre from austin and I remain in the same market. That was almost 400 miles south. Houston is part of the same market as well as all the way to east to the border of lousiana.

rangercaptain said:
At&t hasn't supported voice+LTE data. Its the original voice+3G data. Its not the phone.
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Click to collapse
ranger - thanks but that doesn't explain the problems I experienced.

tramane said:
A given market can be very large it can encompass a whole state. I work in the south texas market which is basically EVERYTHING south of killeen texas. I have driven as far as 6hrs to south padre from austin and I remain in the same market. That was almost 400 miles south. Houston is part of the same market as well as all the way to east to the border of lousiana.
Click to expand...
Click to collapse
So how can I determine the frequency of my market to answer your original inquiry??