Database Develop

Connecting to UMTS/HSDPA using AT&T

I have noticed that when I am connected to the fast cellular internet the sign constantly switches between 3G to H. Like every 15 secondes.
It's not that the connection is dropping it's just it is always changes from 3G to H. I am on At&T and would like to know if it happenes to someone else.
As I read, At&T suppose to have an HSDPA and since I am in big cities like Chicago and Washington DC, if there is HSDPA it should exists in these cities.
So?? anyone using AT&T + KAISER knows what I am talking about?
should be worried?

i see this behavior all the time with my Kaiser, Trinity and Treo and never worry about it... most often the i'll see the "H" symbol when i'm tethering or downloading a file from a website or i'll see the "3G" or "E" if i'm in an area of town that doesn't have a strong signal... i don't worry about this behavior unless it affects what i'm doing, e.g., lose my internet sharing connection. just my 2 cents...

cortezzi said:
i see this behavior all the time with my Kaiser, Trinity and Treo and never worry about it... most often the i'll see the "H" symbol when i'm tethering or downloading a file from a website or i'll see the "3G" or "E" if i'm in an area of town that doesn't have a strong signal... i don't worry about this behavior unless it affects what i'm doing, e.g., lose my internet sharing connection. just my 2 cents...
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Thank u for your fast reply. I know sometimes the signal changes to E or even G if there is no high speed connection around but it seems that the H and 3G just changes every 15-20 seconds in areas with high speed connection. does it also happen to you? or anybody else?

alonmalka1 said:
I have noticed that when I am connected to the fast cellular internet the sign constantly switches between 3G to H. Like every 15 secondes.
It's not that the connection is dropping it's just it is always changes from 3G to H. I am on At&T and would like to know if it happenes to someone else.
As I read, At&T suppose to have an HSDPA and since I am in big cities like Chicago and Washington DC, if there is HSDPA it should exists in these cities.
So?? anyone using AT&T + KAISER knows what I am talking about?
should be worried?
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Click to collapse
I actually consider you lucky. At work in Menlo Park, Ca. I rarely get a 3G or an H... But I spent a couple of weeks going to SF every day and there I saw behavior very much like you describe. For me it seemed to want to switch from 3G to H as I was doing some sort of access like e-mail read or a download. Though that is probably just anecdotal as I didn't really make a study of it; just something I noted.
Cheers.

i have the 3g/H switch happening constantly as well. could this connection issue have anything to do with the sms issues (issue being sms works randomly), or totally unrelated?

Yep...this happens to me too.
alonmalka1 said:
I have noticed that when I am connected to the fast cellular internet the sign constantly switches between 3G to H. Like every 15 secondes. It's not that the connection is dropping it's just it is always changes from 3G to H. I am on At&T and would like to know if it happenes to someone else...
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Click to collapse
I'm in the Chicago-North Suburb area and I see it change all the time too. I get a lot of HSDPA connections. From my understanding, this is a good thing!
Though I'm by no means an expert on HSDPA, 3G, UMTS or any of these, it's my understanding that HSDPA will give you data bursts of up to 5 times the connection speed of 3G/UMTS.
TEC

What it means on my 8525
Hi Guys,
Don't worry, you are not having signal quality or connection issues. On my 8525 (Hermes) the switch to H from 3G simply means the phone is using the data connection at the H (HSDPA) speeds. It shows 3G when data is not being transferred.

Yup. It's sort of like a combination power/hard drive light on a computer. When the "H" lights up, data is being read and written over the high speed network. The "3G" means the high speed network is available, your just not sending or recieving at the moment. At the slower EDGE speeds, the "E" is just a power light, showing the network is available, but no indication when you are sending a receiving data over it.

Someone correct me if I'm totally wrong, but here are my thoughts:
The H would be displayed when the device is accessing HSDPA or HSUPA. The D stands for download and the U stands for upload, right? But AT&T only has HSDPA right now, and not HSUPA. So when you're in an HSDPA area and browsing the web or sending and receiving emails, when the device is receiving information (downloading), it's on HSDPA and the "H" is displayed. But then when it needs to send information (uploading), since there is no HSUPA signal it switches to 3G and the "3G" is displayed. Hence the constant switching on the display as the device sends and receives data.
Someone please give me a gold star, or tell me I have no idea what I'm talking about!

Here's a GOLD STAR!!
KCMatt said:
The H would be displayed when the device is accessing HSDPA or HSUPA. The D stands for download and the U stands for upload, right? But AT&T only has HSDPA right now, and not HSUPA. So when you're in an HSDPA area and browsing the web or sending and receiving emails, when the device is receiving information (downloading), it's on HSDPA and the "H" is displayed. But then when it needs to send information (uploading), since there is no HSUPA signal it switches to 3G and the "3G" is displayed. Hence the constant switching on the display as the device sends and receives data. Someone please give me a gold star, or tell me I have no idea what I'm talking about!
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Not that I'm an expert either but THIS WOULD EXPLAIN IT!
Thanks
TEC

If you see the H then you are using HSDPA, if you see the 3G icon then you are using UMTS. The difference is speed and the fact that if you see the H icon it means you can use voice and data at the same time.
I can stream live TV from my Media Center using WebGuide (free) and as long as I have the H icon I can talk on the phone at the same time I'm watching TV but if it switches to 3G I loose my data connection until I hang up the phone.
Mine mostly stays on H but swithces to 3G when the HSDPA signal is lost. HSDPA isn't avalible every where that 3G UTMS is.
Also HSDPA is 3.5G and UMTS is 3G. Meaning with UMTS you can get downloads of 384 kbps to 768 kbps and with HSDPA you can get from 768 kbps to 1mbps.

This is how it is supposed to work kids...
The H only shows up when you are using HSDPA. HSDPA would kill your battery in no time if it stayed connected all the time. your phone is smart enough to only use HSDPA when it is actually sending/receiving data. Think of it as a power saving feature.

I'm in cleveland and i just see an "H" all the time... FWIW...

Jason Lee said:
your phone is smart enough to only use HSDPA when it is actually sending/receiving data.
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But it only uses HSDPA when it's RECEIVING data, not SENDING. That's what HSUPA would be for (if AT&T had it yet). Right?
High Speed DOWNLINK Packet Access
High Speed UPLINK Packet Acess

KCMatt said:
But it only uses HSDPA when it's RECEIVING data, not SENDING. That's what HSUPA would be for (if AT&T had it yet). Right?
High Speed DOWNLINK Packet Access
High Speed UPLINK Packet Acess
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That is correct. HSUPA should be coming soon according to Engadget: HSUPA

KCMatt said:
Someone correct me if I'm totally wrong, but here are my thoughts:
The H would be displayed when the device is accessing HSDPA or HSUPA. The D stands for download and the U stands for upload, right? But AT&T only has HSDPA right now, and not HSUPA. So when you're in an HSDPA area and browsing the web or sending and receiving emails, when the device is receiving information (downloading), it's on HSDPA and the "H" is displayed. But then when it needs to send information (uploading), since there is no HSUPA signal it switches to 3G and the "3G" is displayed. Hence the constant switching on the display as the device sends and receives data.
Someone please give me a gold star, or tell me I have no idea what I'm talking about!
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Click to collapse
Perfect.!! Downlink = Downloading (HSDPA).. Upload data by 3G as AT&T is not supporting Uplink = Uploading (HSUPA)... smart one..

I'm not sure it is that simple...
I live in Jacksonville an i neverget an "H" except when i used shap's rom on my 8525; however, i get speeds from 600 to 980, so is this extremely fast UMTS, or is Cingular just inconsistant with their labels?

exzist78 said:
I live in Jacksonville an i neverget an "H" except when i used shap's rom on my 8525; however, i get speeds from 600 to 980, so is this extremely fast UMTS, or is Cingular just inconsistant with their labels?
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I also live in Jacksonville and found with the Tilt that I was only seeing the
3G icon and never the H icon until I installed KaiserTweak and set the HSPA option to enabled. Now I get the H icon but only during the data connection being active (e.g., sending a URL request and receiving the page load). The icon then turns to 3G when the Tilt sits "inactive."

Also just because you don't see the H for HSDPA doesn't mean its not working unless the REGISTY has the correct setting you will not get the H icon. the place is HKLM>Drivers>RIL>EnableHSDPAIcon = 1 (sometimes default is 0 which means you won't see the H icon)

Since my last posts on this topic, I now have my Tilt!
I am confused- why would AT&T not enable the "H" icon? If you are using HSDPA (and soon HSUPA), wouldn't they want you to know it?
Maybe they are afraid it will confuse people. They just want to market "3G" and people to understand it and see that icon, whether they are on UMTS or HSDPA/HSUPA?

Tilt ATT HSDPA and the 3g rollout

I am in Denver and my local store told (the people i bough the phone from) me that on Oct 15th the Denver area woudl get 3g and HSDPA but i have nether. i have found threads where people say you need to do a reg edit to turn on high speed internet? is this true? is there anyone using a Tilt on a ATT 3g HSDPA network and getting good speeds? has the roll out just not happened in Denver as i was told? or do i need to do a reg edit to get it working?
thanks
Sam

Chem E Sam said:
i have found threads where people say you need to do a reg edit to turn on high speed internet? is this true? is there anyone using a Tilt on a ATT 3g HSDPA network and getting good speeds?
thanks
Sam
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Umm.. could you link to those threads? 3G works right out the box.
I live in the DFW area and 3G speeds can vary from 400kbps to 1mbps. 90% of the time it stays around 700-900kbps. Speed testing shows a wifi connection is about the same. So I almost never turn on wifi if I'm in a 3G area.

roll out must have been delayed, it is not an issue with the device (what kind of connection icon do you get when you go online?)

i get about 175-215kbs ya it sucks.
http://forum.xda-developers.com/showthread.php?t=337450
http://forum.xda-developers.com/showthread.php?t=335096
are the two threads i read.
"Umm.. could you link to those threads? 3G works right out the box.
I live in the DFW area and 3G speeds can vary from 400kbps to 1mbps. 90% of the time it stays around 700-900kbps. Speed testing shows a wifi connection is about the same. So I almost never turn on wifi if I'm in a 3G area."
thanks for letting me know you are getting it right out of the box. are you using the stock rom?

Correct me if I'm wrong, but shouldn't the SIM be a 3G sim? Have you looked into that?

Chem E Sam said:
I am in Denver and my local store told (the people i bough the phone from) me that on Oct 15th the Denver area woudl get 3g and HSDPA but i have nether.
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I am in Colorado and still no 3G but when I travelled to St. Louis this weekend I magically had 3G service with no registry hacks, etc. running the standad Tilt AT&T ROM. I'd heard the 15th for Denver as well, hopefully soon!

1. You do have to have a 3G Sim.
2. A registry hack may be needed to show HSDPA but 3G will show when you are in coverage.

No hack needed, the hack you refer too is to change the Icon to show HSDPA in use as opposed to always showing 3G in a 3G area.
No about Denver...I read there was an FCC issue and you have another year to wait now. I think it was on Yahoo business news and someone posted it on Hofo.

IN NYC i get 840 down, and 350 up..
right out of the box...

I was in the AT&T store last week here in denver, and the guy said probably closer to Nov. 1st...but I'm not holding my breath.

3G Same Speed as HSDPA?

Hi, i'm on t-mobile UK. I've run some internet speed tests and i'm getting about 300kbps on both 3G and HSDPA. Is that normal - i thought 'H' was meant to be quicker?

nokmond said:
Hi, i'm on t-mobile UK. I've run some internet speed tests and i'm getting about 300kbps on both 3G and HSDPA. Is that normal - i thought 'H' was meant to be quicker?
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Not nornal because HSDPA (If configured and rolled out properly by the operator) gives up to 7.2 mbps

Might also depend on your contract. The more expensive your data contract, the higher the speed you get.

out of interest which speed test did you use?

check with t-mobile on your contract. in general, W7W £7.50 users do not get HSDPA included. You'll see the H symbol, but you wont get the speeds.
Also, depends on network traffic in your area, network capacity etc. etc.
I'm on the £12.50 W7W add on and get around 600kbps. not the full 7.2mbps, but that is a theoretical maximum, and you will never get that. same as ADSL is 'up to 8meg' , HSDPA is 'up to' 7.2meg.

HSUPA on Diamond

I've seen I can activate the HSUPA on my Diamond, so I did it, but how can I know if I'm connected using HSDPA or HSUPA, is there an other icon? (like an H+ icon)

You'll get an H icon instead of 3G or G.

I've already got an H with HSDPA, but is it the same with HSUPA?

d3us said:
I've seen I can activate the HSUPA on my Diamond, so I did it, but how can I know if I'm connected using HSDPA or HSUPA, is there an other icon? (like an H+ icon)
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i read that the icon will change to U

Aqrab said:
i read that the icon will change to U
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Not so sure i believe that myself...U was the old 3G icon that was used in early WM5 builds, but most people call it 3G, not UMTS so they changed it.
@d3us. you do realise that HSDPA and HSUPA are the same thing in different directions right? it's not an either or thing. they work together at the same time. HSDPA is the download link and HSUPA is the upload link.
So if you have enabled it, and your network supports it, and it is enabled on your account.....you should be using both HSDPA and HSUPA when you see the H icon, but for most of the time, and unless you are sending serious amounts of data, you'd never notice it just browsing, watching youtube and using messenger.
however, sending emails with huge attachments....then you might notice it.

I don't know if it's enabled on my account, that's why I was wondering, then the only way to know is to test my upload rate.

yeah you wont see any difference on the display.
your upload will just be alot faster

what network you on?
AFAIK, in the UK, the only network that has turned HSUPA on for their whole network is t-mobile. although as they share with 3, i wouldn't be surprised if they had it as well.
if your on any of the other UK networks, or in another country, i can't tell you i'm afraid.

3 in Denmark says that they don't support HSUPA but I still get a much higher upload when I enable it

it could well be that they are working to launch it and have just not announced it yet. Vodafone in the UK had HSDPA for a couple of months before they actually announced it to the public.....
Still, if you're getting the higher speeds, that's pretty sweet!

I'm using Orange in France, they should have deployed the HSUPA in some cities since January but I can't test now since I'm still on holidays using an EDGE connection^^
Orange claims HSUPA improve the ping, I hope it's true.

o2 - NO 3G???

guys,
i just transferred from orange to o2. i have no 3g now?? i used networ wizrad and got the settings from o2 but still no joy
i have HK official wwe rom and there is no 3g option in comm manager either
can anyone help?

did you try running connections setup? or adding the 3g to comm manager with tf3d config to see if it is on?

yes i ran connections setup and o2 sent me the config.
i cant fiund the wsay to add 3g to comm manager in td3 flo adv??

yes 3g is enabled, just doesnt work or never active even in good signal areas, nothing! i either have H or E next to my reception

patterns said:
yes 3g is enabled, just doesnt work or never active even in good signal areas, nothing! i either have H or E next to my reception
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H? Oh dear... does someone wana tell him :/

I've been curious about this too. O2 doesn't have a 3G license, which is why they used the Jap technology i-mode (which as we know flopped). So where is the iPhone's 3G coming from? I think it's from '3', but I'm not 100%. So if you're not in a '3' coverage area I would guess this is why you don't reception on this band.

adamdon89 said:
H? Oh dear... does someone wana tell him :/
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LOL (H) = HSPDA
HSPDA=7.5Mbps Approx making it a shed load faster than 3G
High-Speed Downlink Packet Access (HSDPA) is a 3G (third generation) mobile telephony communications protocol in the High-Speed Packet Access (HSPA) family, which allows networks based on Universal Mobile Telecommunications System (UMTS) to have higher data transfer speeds and capacity. Current HSDPA deployments support down-link speeds of 1.8, 3.6, 7.2 and 14.4 Mbit/s. Further speed increases are available with HSPA+, which provides speeds of up to 42 Mbit/s downlink.
robbed form wiki as im lazy!

adamdon89 said:
H? Oh dear... does someone wana tell him :/
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im sorry, i LOL'd when i read that.

I didn't even notice the H in his post LOL. Strange how he either gets GPRS or HSDPA though, and never any 3G.

yes this is strange - well at least it explains it. i put my 3 sim in and i get 3g straight away, oh well i can connect to internet anyhow so.... all is good
thanks for help guys