low quality pictures when using gprs - 8125, K-JAM, P4300, MDA Vario General

I've noticed when using gprs that graphics seem to be much lower quality than they should be as if they've been re-compressed to a lower resolution
for example if I download the webcam image from my local beach over wifi its usually about 50k and a very clear image, but when I download the same image over gprs its only about 10k and is so blocky and blurry that its impossible to make out anything in the picture.
is this a "feature" which can be turned off or are tmobile deliberatly screwing with downloads to save on their bandwidth at my expense?
cheers

Yup, many GPRS operator do the same.
I'm not sure whether TMoile does this (VOdafone does): try to look around for other APN's of T-Mob. Voda has a "standard net" (uncompressed / not scaled-down) APN for people that do not want downsampled images.

Related

What do you think so far

I love my TyTn no problems at all, very fast and HSPDA rocks, so does the scroll wheel one handed operation is now a reality
Chris
So far, I'm very impressed with the speed.
The one-handed aspects (like the scroll wheel) are tremendous.
HSPDA definitely rocks. Depending on where/when I try, I've seen download speeds between 600kbs and 1.2mbs. Not too shabby!
I'm having issues with "Internet passthrough" access while connected to ActiveSync, but otherwise, problem-free!
goestoeleven said:
So far, I'm very impressed with the speed.
The one-handed aspects (like the scroll wheel) are tremendous.
HSPDA definitely rocks. Depending on where/when I try, I've seen download speeds between 600kbs and 1.2mbs. Not too shabby!
I'm having issues with "Internet passthrough" access while connected to ActiveSync, but otherwise, problem-free!
Click to expand...
Click to collapse
OK.
Then please tell me the following:
(a) How do you conclude you are on HSDPA ? I assume you are deducing that from the downlink speed you experience, ain't ya ? Acc. to my experience you can conclude you are on HSDPA if you get good continuous rates of well beyond 400kbit/s.
(b) Then which software (PDA or PC-based) are you using for checking the downlink data rate ?
(c) Can you disclose in which town in the US you are residing ? Afaik Cingular has only recently rolled out HSDPA. So I'd assume you live either in or slightly outside a larger town to have access to HSDPA.
Something else - regarding the scroll wheel:
I agree, this could be a great helper for a one-hand operation.
Unfortunately I think it could work more intuitively and is in some aspects even lacking functionality where functiuonality would really be needed.
E.g. when surfing in the internet.
You can invoke the IE using the scroll wheel; but how the hell can you then access your IE Bookmarks ??? :-(
As a resolution HTC could have programmed the first up-scrolling movement with the wheel after invoking the IE as a trigger for starting the Bookmarks. What do you think ?
Also when scrolling thru the Bookmarks the wheel opens every sub-folder when moving on it, thus it needs really very long for selecting any specific bookmark if you have accumulated a big collection.
Why is the wheel opening a sub-folder when only a click at a folder should open it ? A little bit of a bug. What do you think ?
My opinion is:
The wheel definitely is a step forward, but still needs development.
Regarding HSDPA: There is no way of finding out if the device is really on HSDPA (same applies to EDGE btw) other than by judging on the downlink data rate experienced (which tool ?).
As my operator offers HSDPA here (and I get tremendous downlink rates using one of these Vodafone Mobile Connect Cards) I somewhat doubt that the TyTN already offers HSDPA capability as the speeds I experience (both when using as a surf machine as well as a modem) are good UMTS speed but really not HSDPA !
Which brings me back to my mantra:
"Guys, we need a generic way for distinguishing between HSDPA/UMTS and EDGE/GPRS, like the registry tweak for the predecessor models !!!"
Oh the TyTN does indeed do HSDPA. I live in a Cingular HSDPA launch city, namely Salt Lake City.
I've teathered it to my laptop and have acheived speeds of over 860/kbit download via dslreports.com. I can also acheive nice low latency between 200-300ms.
I have seen the device drop to GSM/EDGE mode when I'm in a bad area and the speed immediately drops to 100kbit or less.
At least in Salt Lake City, wherever the phone shows a U icon, I'm getting increadible speeds.
I ran the dslreports mobile test on the device and it gets the same speeds as when teathered to the laptop. Also I ran dslreports speed test through my wireless internet connection at home which is teathered to an 8mbit cable modem account. On this connection the TyTN tops out at being able to measure around 1500/kbit through pocket IE, so the average 600-800kbit over HSDPA must be pretty accurate. Very rarely am I seeing less than 600kbit download.
-James
For Salt Lake City let me clarify. When I have a U, it's always getting HSDPA speeds, when it shows a G, I'm always getting EDGE or less speeds.
Around here I assume everywhere we have UTMS, we have HSDPA enabled, this is how cingular did it. This is the same for GSM, wherever Cingular has GPRS, they have EDGE so whenever I see a G icon, I'm getting edge speeds.... now wether it truely is EDGE, or regular GPRS I don't care, in fact who cares, it's so slow compared to HSDPA the difference is not important to me. As long as I got the U, I know I'm getting HSDPA.
I guess for networks in Europe that deployed UMTS before HSDPA this doesn't help you determine if you are getting HSDPA or not. However from what I understand, if the network has HSDPA, and your phone is capable of it, then you just automatically get it. You are not selectively being denied HSDPA or anything, it's more spectrally effecient for the operator to let you use it if it's available. It would simply decrease their cell capacity to somehow deny you use of it.
A good example is on Cingular, I have a data package, I popped my 3G sim into my phone, and the same data login settings still work, only it's a hell of a lot faster.
Can you determine if HSDPA is indeed availabel on the towers in your area?
-James
In Europe, as the operators started off with UMTS a couple of years ago, HSDPA is definitely something of an "upgrade", thus not seamlessly switched on.
Would suppose its to a large extent a question of licensing and licenses have a better payoff where the services offered thru them are actually taken up by the customers.
This is surely the reason why there is generally not (yet) HSDPA available in every cell which is offering UMTS. (Agreed there are other reasons for that as well, but this one is a very important reason.)
As I live in the capital of my country and the HSDPA coverage is very good here (also other populated places in the country are well covered with HSDPA already) I can get high data rates using one of these high-speed PCMCIA data cards for the PC (e.g. the Vodafone Mobile Connect Card).
In the same cells I get a much lower data rate when surfing with the TyTN.
This made me wonder whether the TyTN at all already supports HSDPA.
My only complaint so far is the A2DP. The headsets I have tried with it do not have great connection. In that I mean that it connects fine, but there is always these constant pauses within a song (i.e., when I'm listening to a song) that drives me nuts. My M600 from Sony Ericsson does not do this as the connection is problem free. Also, the whole phone seems to slow down when I'm using the bluetooth headset to listen to music.
That's it so far.
tkao2025 said:
My only complaint so far is the A2DP. The headsets I have tried with it do not have great connection. In that I mean that it connects fine, but there is always these constant pauses within a song (i.e., when I'm listening to a song) that drives me nuts. My M600 from Sony Ericsson does not do this as the connection is problem free. Also, the whole phone seems to slow down when I'm using the bluetooth headset to listen to music.
That's it so far.
Click to expand...
Click to collapse
Check out the wiki:
http://wiki.xda-developers.com/index.php?pagename=Hermes_Registry
There are some registry hacks that help the AD2P performance
jmacdonald801,
Thanks for the post. I'm in Salt Lake City too using heavily hacked Wizard on T-mobile's network. I love the wizard but have been missiing the Evdo speeds of Verizon but I need a world phone for my business.
Where'd you order your TyTN from and what is your cingular plan costing you?
Thanks again.
rambo6 said:
jmacdonald801,
Thanks for the post. I'm in Salt Lake City too using heavily hacked Wizard on T-mobile's network. I love the wizard but have been missiing the Evdo speeds of Verizon but I need a world phone for my business.
Where'd you order your TyTN from and what is your cingular plan costing you?
Thanks again.
Click to expand...
Click to collapse
I created a big stink on ho-fo because my TyTN was defective and I tried to return it after the 7 day policy of the online reseller.
Listen, I would be neglectful if I didn't tell you you are taking a big risk by purchasing this device, regardless of where you buy it. As you may have read here, this device has a serious quality control issue. Even replacement units are not always bug free.
That being said here are some things you really need to consider when purchasing this phone.
HTC is not obligated to repair your phone outside of the countries where it is meant to be sold. The United States is not on this list. I read the warenty documentation carefully. This doesn't mean they won't repair it, it just means they can tell you to bug off at their leisure. You could end up shipping this thing back to Europe and who knows if you will ever see it again.
The phone will cost between $700 to $800. Now that's a lot given that HTC isn't obligated to fix it, and the retailers you will encounter online will only offer a 7 day "exchange" policy only. Not only that, this policy may not be made clear to you during the checkout procedure.
Now assuming the HTC didn't have the number of issues that have been reported here, I could recommend someone to buy it from, but I certainly don't want you to take the chance of ending up with a defunct device with no warranty and basically up **** creek without a paddle.
While the device is "fun" and "neat" I doubt it's really going to provide you with any more functionality than your current device.
Now onto some positive information...
I have an older $19.99 media net package. It has unlimited data. I get 1200 text messages and 200 MMS messages. This package will work fine on the TyTN regardless of what anyone at Cingular will tell you.
What they won't tell you is what the physical difference between MediaNet and the PDA/Laptop plan are.
Firstly, there is not speed difference, if you have HSDPA, then you get the speed, period.
Secondly, Media.Net uses a fake IP address, similar to what happens when you have a router at home. the PDA Plan will give you a real internet IP address that people can connect to from the internet. The operational difference is simple, Media.Net will not allow you to use Corporate VPN, I have tried. Skype, and about every other application will work fine on Media.Net.
I don't know why Cingular makes such a big Stink about this, I use Cingular video MobiTV and you can literally eat hundreds of megabytes of data using Cingular's very own Media.Net applications. It's really just a scam to get you to buy a more expensive plan, which is fine if you need VPN.
As for me, I'm in the process of returning my TyTN and I'll stick with the LG CU500. It's an excellent phone. I think I'll find a PDA with 640x480 and bluetooth and just get the internet via the phone over bluetooth. This way I only need to carry the bigger device around when I need it and the phone just works without any complication.
If you can accept all the complications and risks involved in buying an imported phone for that amount of money, then I can recommend a good person, however I didn't fair so well.
Wait for the Cingular version.
-James
James,
Thank you for the candid response. I was going to wait anyway. I get a new phone every 6 month now and I've only had the Wizard for 4. In browsing this forum, I see there's quite a few bug which need fixing. Your advice to wait a while is much appreciated.
My wizard is working so well that the only thing I miss is the 3G internet. T-Mobiles 2.5 G ain't bad for anything except streaming video.
You've made me very eager to try the device on the Cingular network.
Thanks again.
@rkorzuch
Thanks for the A2DP performance tip from the Wiki, works for me with ITech S35 - improved audio quality.
jmacdonald801 said:
For Salt Lake City let me clarify. When I have a U, it's always getting HSDPA speeds, when it shows a G, I'm always getting EDGE or less speeds.
Around here I assume everywhere we have UTMS, we have HSDPA enabled, this is how cingular did it. This is the same for GSM, wherever Cingular has GPRS, they have EDGE so whenever I see a G icon, I'm getting edge speeds.... now wether it truely is EDGE, or regular GPRS I don't care, in fact who cares, it's so slow compared to HSDPA the difference is not important to me. As long as I got the U, I know I'm getting HSDPA.
I guess for networks in Europe that deployed UMTS before HSDPA this doesn't help you determine if you are getting HSDPA or not. However from what I understand, if the network has HSDPA, and your phone is capable of it, then you just automatically get it. You are not selectively being denied HSDPA or anything, it's more spectrally effecient for the operator to let you use it if it's available. It would simply decrease their cell capacity to somehow deny you use of it.
A good example is on Cingular, I have a data package, I popped my 3G sim into my phone, and the same data login settings still work, only it's a hell of a lot faster.
Can you determine if HSDPA is indeed availabel on the towers in your area?
-James
Click to expand...
Click to collapse
out of curiosity, do you ever see an "E" when connected to edge networks? or does the TyTn handle "G" as either gprs or edge and "U" for UMTS?
edit: nvm...read the FAQ. that kinda sucks...i hope someone can figure out how to enable the "E" icon for the hermes.
Hi
I live in Austria - I am on T-Mobile and I just gut 664kbit/s using http://performance.chello.at:81/
So that seems to be HSDPA
BR
Daniel
@mdajax:
No "E" for edge on the TyTN unfortunately. The known reghacks don't work. Some are playing with the bitmaps that make up this display but so far I haven't heard of any success stories.
vodafone hspda
just measured 1100Kbps, so much for my monthly data allowance at this rate it'll last approximately 300 seconds ......

M3100 Reconfigured to T-mobile UK - Slow 3g data ?

Hi Everyone,
I got a Orange M3100 and reconfigured the settings for T-mobile.
Now, I thought I'd get fast 3g data speeds, but I find the data speeds are abit faster than GPRS.
Any ideas of some "Tweaks" or other settings to get faster data speeds ?
Thanks.
Anybody ?
I was also wondering how people on T-mobile (UK) are finding data speeds for browsing and email compared to GPRS ?
If you subscribe to T-Mobile (UK)'s Web n Walk then simply call T-Mobile Customer Services and ask them to activate HSPDA on your account. I have and the speeds are VERY impressive for a mobile phone! :lol:
Thanks for the reply.
I've already done that and it didnt make a blind bit of difference.
Spoke to T-mobile again today and they think its because I haven't got good 3g coverage in my area. I'm not sure if they are telling me the truth or just fobbing me off.
I'm gonna try a couple of other areas (to the North and West of me as advised by T-mobile).
I just wasn't sure if there were any technical reasons that a reconfigured M3100 should have problems with running on T-mobile.
So Is your speed SUBSTANTIALLY faster than GPRS ??
YES. When it works it works very well. I too suffer from time to time with coverage issues but thats to be expected.
The area that I am in has 3g coverage and I can make a 3g video call without a problem.
I'm going to try out a few more areas later on and see if it makes a difference, but I think the coverage in my area is fine.
Pulling about 850k/sec on my m3100 on T-Mobile at the moment in Greenwich..
850k ....... damn ..... Is that Kbytes or Kbits per sec ??
My T-Mobile connected 3100 is getting 871kbit/sec in Central London.
There are a few factors which can make it seem slower:
1. Pocket Internet Explorer is not fast, and it does take a while to render pages.
2. DNS lookups on T-Mob DO seem to be a little slow.
3. If you're using Netfront or Opera and have auto-proxy on, it'll take a while to discover that you don't have a proxy before even beginning to render the page.
What application are you using to check data speed ?
ash99 said:
What application are you using to check data speed ?
Click to expand...
Click to collapse
This works from PIE:
http://www.bandwidthplace.com/speedtest/
Direct link to speed test here (I have it on bookmarks).
You can find it in the wiki page, under the SetHSDPA section:
http://wiki.xda-developers.com/index.php?pagename=Hermes_Utils
So ..... what would a good browser to use ???
Also from one of the previous points, I find it does takes AGES to find and then actually open up a page.
Using the speed test above on the TyTN built in Pocket IE I could not get a speed result. But using Opera I just managed 1.2 megabits per second. 1MB file downloaded in 6.9 seconds.
Better than my desktop PC!
Cool. I'll do some tests myself later, but for now I've phoned Oranged, cancelled the upgrade and I've ordered the Vario II on a a new line with T-mobile.
I might as well use a t-mobile phone on t-mobile
Should get it tomorrow.
Got my MDA Vario II Today. I'm giving back a Orange SPV M3100 and in comparison the MDA seems
- a little bit slower, possibly due to additional software loaded by T-mobile
- Damn ugly, Silver, bergundy, black ..... WHY ???
- Buttons are not as good. Smaller red and green buttons.
But .......... life goes on.
battletank said:
2. DNS lookups on T-Mob DO seem to be a little slow.
Click to expand...
Click to collapse
Paul at Modaco posted this news item about slow DNS lookups on T-Mobile. His solution was to alter the DNS settings from their default (assign by ISP) to 217.115.138.24 and 83.217.93.246 which he found on OpenNIC.
Please read his article for more details. I have altered the settings on my Tytn (I use T-Mobile) and it does seem better.

IP header compression and software compression

I have been searching for answers about these two settings in network setup but have not found any explanation or benchmarks showing the positive or negative effects on throughput.. has anyone done their own tests?
Black6spdZ said:
I have been searching for answers about these two settings in network setup but have not found any explanation or benchmarks showing the positive or negative effects on throughput.. has anyone done their own tests?
Click to expand...
Click to collapse
Would be interested to know to.
Theoretically this has to boost performance, since cellular bandwidth is relatively limited, so compression should be able to put more data through the pipe.
However, cellular networks also have high packet loss, and also have limited CPU power to do the compression, so I'm actually thinking if this has an adverse/negative effect in real-world performance?!
IP Header Compress
I remember a while ago, that on the AT&T settings they used to have the IP header compression box checked. I never noticed any difference having it checked or not, but then I realized that AT&T don't compress anymore.
So, I guess the feature was useful more on the EDGE network and when they started with 3G was better not to use it (just a thought). If anyone has more useful information about this will be good to know what difference does it make.

[Question] Set high quality default 4 youtube

Is there a way to make youtube always play with high quality?
It now always starts with low, then i have to go to settings, and make it high.
Is there no way to make high the default?
I didn't even know you could change the quality, mine is always crappy quality when I'm connected through the cell network and good quality when I'm on WiFi.
chefgon said:
I didn't even know you could change the quality, mine is always crappy quality when I'm connected through the cell network and good quality when I'm on WiFi.
Click to expand...
Click to collapse
So i guess it does that depending on the download speed.
but yes, if you play a vid, and hit menu, you can find high cuality if its low.
afaik it autodetects if you are on wifi or using a dataconnection.
Haven't found a way to change it with normal settings, though there
could be a manual way of doing it, just have to wait and see if some
bright head comes up with a solution or tinker with it yourself
Hey guys
Mine is default set to HQ, I think its because I linked my Gmail acc, and youtube acc. If you goes into your youtube accounts settings, you can set default quality
dunai said:
Hey guys
Mine is default set to HQ, I think its because I linked my Gmail acc, and youtube acc. If you goes into your youtube accounts settings, you can set default quality
Click to expand...
Click to collapse
does that include being on 3g?
mine is automatically high quality when using wifi and low quality when on 3g/hsdpa.

T-Mobile Image Compression

Hi there,
I have just joined T-Mobile UK and am pretty disappointed on the whole. I barely have a 2G connection here in Glasgow, never mind 3G (even though the coverage map shows that I do) and now i can see that all images on web sites are being compressed - it really shows on the HD2 and I was hoping that there is a way to disable it? With o2 I just had to use "bypass" as a username... I am missing o2 already.

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