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Vibrant 3G problem: DL slow and much slower then UL

And download is also much slower compared to other brands. Upload is always very fast (but who the hell needs it fast?). All things are upside down! It must be DL>>UL, but in addition to low DL speed we have DL<<UL !!!
This happen when it's the city with DL/UL speeds are in the 100-1000 Kbps range. If we in the cities with the advanced speeds in 1000-5000 Kbps range everything is normal, the DL>>UL
Do you have such strange unusual DL/UL discrepancy with DL<<UL?
Example of bad upside down DL/UL: 300 Kbps/800 Kbps
Example of good one: 800 Kbps/300 Kbps or 5000 Kbps/1500 Kbps
Have you noticed upside down DL/UL numbers in "bad" tests? DL must be larger
I've ran three Vibrant phones at the same place and time in the city where there is no good 3G speed.
Two of them are unusually painfully slow with download while upload is blazingly (relatively) fast. I was getting 100-300 kbps DL and 800-900 Kbps UL.
High speed UL indicates that we are close to the tower and having good signal but still the download speed unexpectedly sucks
Build date for slow phones is 07/07/2010, will double check tomorrow about faster one.
I use free Speedtest.net application from the Market.
Please do the test !

I get about the same speeds on this as I did on my N900.

Yes, that's what i call "good" case above: the "good" towers, latest equipment and great signal strengths. In such areas my Vibrant is also fine. Problem is in near "bad" towers which are still a majority of the country

seems normal to me since I've had the same type of speeds on both my hd2 and vibrant in areas where 3g quality is known to be poor.
Sent from Samsung Vibrant using XDA App

ryan562 said:
seems normal to me since I've had the same type of speeds on both my hd2 and vibrant in areas where 3g quality is known to be poor.
Sent from Samsung Vibrant using XDA App
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My tests were in the T-Mo shop and we ran different other brand phones, including older ones. All of them were 2-3 times faster on download (and similar or somewhat slower on upload) compared to "bad" Vibrant phones! The one which was "good" Vibrant phone, was similarly fast to other brands.
Same story as i described it above is also in my house where i know the speed range in great details. HD2 shows 800-950 Kbps download speed, Vibrant 250-350 kbps. Near the good tower with 5 Mbps max speeds both of them are equal and work fine, the DL >>UL like it should be. So we probably have some sensitivity issues with Vibrant 3G radios or their settings at low signals

I use the Speedtest dot net application from the Market.
The web based one does not work because needs latest Flash

I have gotten similar dl slower than ul, when my bars are at 1, but most of the time I am very happy with my download speed.
I have gotten over 5Mbs dl with full bars.

The 3G reception on my phone has been quite unpredictable.
I live in the best 3G coverage area in my city. I'm blanketed in T-Mo towers on every side. Inside my house, if I don't touch the phone, I pull down 5Mbps+, and Upload at ~2-3Mbps. It's fast enough to tether and use as my primary connection. Latency is ~35-50ms. I can stream Hulu with no hiccups.
However, if I so much as touch the back of the device with a single finger, the 3G drops until it reverts to EDGE. This is with a silicon case, and I can replicate it every time.
So, that's super annoying. I don't know why this would happen, to be honest.
On top of those problems, I have occasionally run into the issues where my uploads are super fast (~3Mbps), but my downloads are miserable (~0.2Mbps). This usually happens in bigger buildings.

With 3G and 4 bars i get 726/1288 Dl/UL, it has been like that every since I received my phone. Albeit I have only used my phone in a small area so far. Tmobile coverage map says I should be able to take advantage of the HSPA+ speeds, but who knows how accurate those things are.

Have you tried to going in to the mobile network settings and resetting them?
S4X said:
My tests were in the T-Mo shop and we ran different other brand phones, including older ones. All of them were 2-3 times faster on download (and similar or somewhat slower on upload) compared to "bad" Vibrant phones! The one which was "good" Vibrant phone, was similarly fast to other brands.
Same story as i described it above is also in my house where i know the speed range in great details. HD2 shows 800-950 Kbps download speed, Vibrant 250-350 kbps. Near the good tower with 5 Mbps max speeds both of them are equal and work fine, the DL >>UL like it should be. So we probably have some sensitivity issues with Vibrant 3G radios or their settings at low signals
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Sent from Samsung Vibrant using XDA App

ryan562 said:
Have you tried to going in to the mobile network settings and resetting them?
Sent from Samsung Vibrant using XDA App
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I do not see what we can change there besides roaming. The network is T-mob own one.

I've also noticed my up speed is 2-3x higher than my down speed. Kind of strange. I will have to remember to test it more when I am in different areas.

I get the same results sometimes. Most of the times I am getting download speeds greater than 4 Mb/s in HSPA+ coverage. Last night I decided to do a speed test with my Vibrant and my wifes MyTouch Slide. Both of them yielded the same exact results. I tested them 5 times in the same area and all 5 times I got around 350kb/s download and 1100kb/s upload.
Guess it's the network and not the phone.

Horrible data speeds in Philly burbs

With stock Rom back in August I was hitting 5.3 Mb/s download speeds. Now I'm barely hitting .5 consistantly. I did some Nandroid restores and retested. All were the same crappy speeds.
No radio changes to date that I know of. Running Eugene's latest Frankin-whiz. Anyone else experiencing this? Any ideas?
Sent from my SGH-T959 using XDA App

I'm afraid I can't be much help with solving the problem bit I am seeing the same issue here in central utah. I was getting speeds close to 2 mbps than I rooted, applied the lag fix, applied the gps fix (which didn't work any way), and now I get half a meg of I'm lucky. First time I tested I got .05 mbps....how do you check data usage to see if you are over the 10 gig limit where tmo throttles you?
Sent from my SGH-T959 using XDA App

Same here in Colorado Springs. Latest FrankenWiz Rom. Checked data usage, and only at 1.3 G, as I mainly use wifi. Thought it was just me

I live in Philly around old city and I constantly pull 3mbps down and 1 mbps up. The city is where its at.
Sent from my messenger rabbit

NANDROID completely crippled my speed. I restored from a NANDROID backup and it ****ed up everything. Not sure if it was the lagfix I removed prior but either way, restore with ODIN to JI2.

See, I'm still on the stock rom though, so I wonder if it was the lag fix. I may try reversing the lag fix, than retesting to see if it is any better.
Sent from my SGH-T959 using XDA App

Well, I just got home, (I live about 10 miles from work, which is where I did my last test) and now I am pulling 3 mbps down and 1 mbps up....no changes at all to my phone. Makes me wonder if it's a network issue. I tested my wifes vibrant (which is still 100% stock) and it was only pulling .88 mbps down and .90 mbps up....
*Boggle*

I never applied any lag fix mainly because Eugene's roms are fast enough and I give a damn about benchmarks. My first nandroid has a record of my speedtest, just cant reproduce the speeds.
Sent from my SGH-T959 using XDA App

It may just be a network issue. I live in Seattle and usually pull over three downtown, but occasionally it'll force me over to Edge, then an hour later I'll be back on 3G. What sucks for me though is I can only pull about 1.5 - 1.8 in my apartment, but literally two blocks away I can pull 5-6 consistently.

Gotta do it ..Lv all y'all but... WESTIEED.. (see sig) pew that felt good. Nuf said..back to trollin'

When NANDROID/Lag hack ****ed my Vibrant's data speed, WiFi was also slow.

heygrl said:
When NANDROID/Lag hack ****ed my Vibrant's data speed, WiFi was also slow.
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Yeah, my WiFi has no issues at all and I can constantly pull great speeds off it. The data coming off the network is what is spotty at best for me, usually on the low side.

tmobile speeds on the vibrant is absolutely horrible in north Philadelphia. I get like 999k or 1gb download if i hold it in the air. When I used the hd2 rooted with android, I got like 2 to 3 gb.. so it's obviously the phone not being a good signal/data grabber. It's samsung's fault.. Nobody had better reception that Motorola in my opinion.. their phones always get good reception. Just my opinion through testing

stepinmyworld said:
tmobile speeds on the vibrant is absolutely horrible in north Philadelphia. I get like 999k or 1gb download if i hold it in the air. When I used the hd2 rooted with android, I got like 2 to 3 gb.. so it's obviously the phone not being a good signal/data grabber. It's samsung's fault.. Nobody had better reception that Motorola in my opinion.. their phones always get good reception. Just my opinion through testing
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Just got off a chat with TMO, they said one of the local towers has been down for a while. Im not sure if that makes me feel any better but at least there is a known problem instead of the "everything looks good from here" answer I was expecting. Id rather have a tower down and crappy speeds than crappy speeds with no tower down. just have to wait and see.

Tmo 3g speeds...

OK, so before this phone I previously had a vibrant and then the mytouch4g. I live in a so called 4g area. The nexus s seems right in line with my vibrant and I can get a tick under 6mbps down. The upload here is faster on my nexus than the vibrant or the mytouch, at around 1.7mbps. The mytouch at Max could pull about 7.5mbps. I can't remember if I ever got more than that. I'm not making this threat to complain about the speeds of this phone.
My question is, if this phones radio can get a theoretical Max of 7.2mbps download, is that an unrealistic number even when the tower can pump out higher speeds? For example, the mytouch has a Max of 14.4mbps but even in a 4g area it never pulled down close to that. I'm thinking the speed of the radio is like alot of things where you have the theoretical Max and then you have the functional limit. Am I wrong saying that? Has anyone gotten a 7mbps download speed off the phone? Or conversely, if anyone has owned a g2 or mytouch4g, have you reached speeds anywhere close to those maxes? Is tmo even pumping out that much bandwidth yet?
Sent from my Nexus S using XDA App

Jayrod1980 said:
OK, so before this phone I previously had a vibrant and then the mytouch4g. I live in a so called 4g area. The nexus s seems right in line with my vibrant and I can get a tick under 6mbps down. The upload here is faster on my nexus than the vibrant or the mytouch, at around 1.7mbps. The mytouch at Max could pull about 7.5mbps. I can't remember if I ever got more than that. I'm not making this threat to complain about the speeds of this phone.
My question is, if this phones radio can get a theoretical Max of 7.2mbps download, is that an unrealistic number even when the tower can pump out higher speeds? For example, the mytouch has a Max of 14.4mbps but even in a 4g area it never pulled down close to that. I'm thinking the speed of the radio is like alot of things where you have the theoretical Max and then you have the functional limit. Am I wrong saying that? Has anyone gotten a 7mbps download speed off the phone? Or conversely, if anyone has owned a g2 or mytouch4g, have you reached speeds anywhere close to those maxes? Is tmo even pumping out that much bandwidth yet?
Sent from my Nexus S using XDA App
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closest ive gotten on my nexus is 6.5 down and 3 up

Wow that's an amazing upload speed!
Sent from my Nexus S using XDA App

Jayrod1980 said:
Wow that's an amazing upload speed!
Sent from my Nexus S using XDA App
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And i by no means live in a small city.
Corona is 30-40 mins from LA, population like 160,000 people. so it isnt some podunk town

Damn you live in corona and get those speeds? I'm down in temecula, but on ATT. I see around 3 Mbps but have been thinking of switching.
Anyway theoretical max is most always limited by the backhaul to the tower, depending on how many T1 or more connections it has. But you should be able to get pretty damn close to max if all things were right in the perfect conditions.

RogerPodacter said:
Damn you live in corona and get those speeds? I'm down in temecula, but on ATT. I see around 3 Mbps but have been thinking of switching.
Anyway theoretical max is most always limited by the backhaul to the tower, depending on how many T1 or more connections it has. But you should be able to get pretty damn close to max if all things were right in the perfect conditions.
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ya the speeds out here are pretty damn good

You will definitely run into the limit of the processor using SpeedTest.
You can show this if your home DSL / cable is fast enough. I get 17-19Mbps down and .9mbps up over WiFi through my DSL (Free, in France, ASDL 2+, and I live 800m from my CO in Paris, I'm using WiFi N from an AirPort Extreme) using my MacBook Pro (core i7, 8GB RAM so it can take it. ), running SpeedTest to a Paris server in Chrome. Using the same WiFi, I can get up to 8.5mbps down and .9 up on my Nexus S, connecting to the same server through the SpeedTest App.
I therefore know that while my connection can support much higher speeds, the phone's hardware/software can't handle them. For reference, an iPhone 4, right next to the NS, pulls up to 6.9mbps down. My N1 can do about 6.5 at best, and my old faithful milestone at stock clocking couldn't do better than about 4.5. Given that the Hummingbird processor in the NS is at 1ghz, and the hardware-similar iPhone's A4 (the GPU, much better in the NS as a SGX540 versus the iPhone's SGX535, isn't engaged at all by speedtest) is running at roughly 750-800mhz, those scores seem to indicate that the processor is the bottleneck with this test on these devices. Idem for the N1 versus the Moto - it is generally 1.4x to 1.5x faster with most CPU kinds of stuff compared to the Milestone, and the 6.5 to 4.5 ratio tends to follow that. I can't tell you why the N1 is slower consistently than the iPhone 4 at this test over WiFi, but it most definitely is.
Over 3G, I get wildly variant service all over Paris. I've seen up to 6mbps with the iPhone 4, the NS, and the N1, and up to (still) about 4.5 with the Milestone.
3G radio signal is something else entirely - the Moto is by far the best, then the NS, and then you have to fall a long, long way before you get to the iPhone and the N1.

San Fernando Valley here.
Never seen more than 3Mb/s on the NS on the down side, usually 1.5-2Mb/s on the up. My N1 in the same locations routinely pulled 4Mb/s down, about 1.5-2Mbs up. Highest I recall ever seeing is 4.4Mb/s on the N1 down.
One thing I've noticed with the Speedtest app is that the default server for me, Los Angeles, is often very slow for all devices. I can pull faster speeds if I test against Bullhead City or other Az cities.
I concur with @big_adventure that the phone's software seems to limit it rather than the wireless technology. I'm on a 30Mb/s FIOS line at the house, the laptop gets 32 down, 20 up, the Nexus S on the same WiFi node maxes out 12Mb/s down and 7Mb/s up.
I'll try to run some tests today to see if my N1 can still get the 4Mb/s speeds it used to average at my office. I'll also run some tethering tests and see what the laptop can pull over the tether for comparison.

running speed tests on a mobile phone, the bottleneck is ALWAYS the mobile hardware. the combination of cpu, memory type and speed, are ALWAYS the bottleneck when speed testing on a phone. so its the whole package that matters. maybe the nexus 1 has slower RAM memory but faster CPU, but the iphone 4 has slower CPU but faster memory, etc.

I'm getting 2.7-3.8mbs download and ~1.7 upload(never seems to change much) here in different parts of North Dallas.

I just did about a dozen tests between the two phones (Nexus S and Nexus 1), from my office, where I used to get 4.0Mb/s on the N1 in Speedtest app on the phone.
I ran a couple of tests against 3 different servers (Los Angeles, Lake Havasu, Bullhead City) on each phone, and again on my laptop tethered via wifi hotspot to the Nexus S.
I threw in a few extra tests on the NS after a reboot of the phone (to swap the sim back and forth between the two phones).
The results were pretty much the same for each method.
I peaked out at 2.9Mb/s down on both phones, and 2.8Mb/s on the tethered laptop.
Upload speeds more interesting, the Nexus One maxed out at 1.3Mb/s on every test to every servier, the Nexus S got 1.7Mb/s on every test to every server, and on the tethered laptop as well.
Both phones show full bars and 3G and I used the Antennas app from the Market to confirm that both phones were connected to the same cell tower.
Perhaps not the best field testing, but good enough to show me that if either phone has an advantage over the other, in my area, it's actually the NS because it's getting 40% faster uploads and comparable downloads.
It also shows me that my fears that the NS wasn't getting the 4.0Mb/s I am used to in this location is not because of the device, it seems to be a change in the quality of service here.
As a final point of interest, I ran the same tests using my iPhone 4 on AT&T. Averaged about 1.9Mb/s on the down, 1.0 on the up. This was interesting because this phone was averaging 2.6-ish down last time I tested it here. It seems that both AT&T and T-Mo aren't serving up what they used to here near the Van Nuys Airport.
This also speaks to what I've said consistently about T-Mo vs AT&T...when I can get service from T-Mo it's much faster than what AT&T gives me, but the problem with T-Mo is too many areas that I can't get signal from them around here where AT&T is available on the phone.

WiFi Tether performance Nexus S

currently my Galaxy Nexus is away at samsung as its dead
should get it fixed or replaced soon
anyhoo, I digress
Its 4.65 display is too big for my hands (carpel tunnel sydrome)
So I was looking at the 4.0 to 4.3 phones
Choices boiled down to
Nexus S
SE Xperia Arc S
Sensation XE (may still be to big)
Sammy GSII (may still be to big)
So last night I got the SE Xperia Arc S, today its going back
buttons are way to low on it (carpel tunnel sydrome)
And its WiFi tether seems very poor.
I have unlimited data inc tethering my phone are my broadband connection
I have line of sight to my cellphone companys local mast
I get an average of 5mbps busy time, 10mbps quiet time
The Galaxy Nexus would give me the same results of speedtest either by the app, or on the website on my i7 laptop
The galaxy Y thats my standby phone gives me 4mbps average gives me the same results of speedtest either by the app, or on the website
BUT
The SE Xperia Arc S, has hit 9.6mbps in the app, but its wifi tether will not go much above 3mbps
It also drops and hangs the tether A LOT meaning you sat there waiting a lot.
So looking at the Nexus S, I know the S is limited by hardware to 7.2mbps
But does it get the same good results WiFi tethered?

I get around 6 mbps while tethering.
Sent from my Nexus S using XDA App

The same here in Italy, using both USB and WiFi tethering.

it tested it several times till now, and cant make out any difference in performance. thw wifi connection isnt that stable sometimes, but i switched appartments recently, so i dont know if there are lower wifi circumstances around here.

sounds good
the key is to be above 3.5mbps = 720p streaming without having to precache the video
the Arc S with its upto 14mbps hsdpa should have suited the bill perfectly.
It does on the phone, but not in tether
PS, what upload speeds are you getting ???

http://geekaphone.com/compare/Samsung-Galaxy-S-Plus-vs-Google-Nexus-S#network
"8.03 mbps " down
"2.23 mbps " up
are these resonable figures through tether ?
Im pushing here because I can get one in 3 hours?
but after then I wont be able to.

that's about what I get with ns4g with 4g turned on (maybe just a touch faster) so the fact that you are getting that with your 3g, I would say, is pretty good

Its a 3.5G network
Some us cell phone companies call it 4G (faux) G

Anyone else having slow WiFi connection speeds?

I have been having issues with my phone where it seems to get VERY slow speeds on my home WiFi.
All other devices get very high speeds (eg. Laptop 300+ Mbps, OneplusOne 105Mbps, Nexus 5 60Mbps, Nexus 7 70Mbps).
My Moto X Pure though, for some reason, often gets very unstable speeds varying from 5Mbps to 40Mbps. There is rare occasion when it gets full speeds of 160+ Mbps, but not often.
Anyone else experiencing awkward slowness? It sucks when updating larger apps.

TheColdOne said:
I have been having issues with my phone where it seems to get VERY slow speeds on my home WiFi.
All other devices get very high speeds (eg. Laptop 300+ Mbps, OneplusOne 105Mbps, Nexus 5 60Mbps, Nexus 7 70Mbps).
My Moto X Pure though, for some reason, often gets very unstable speeds varying from 5Mbps to 40Mbps. There is rare occasion when it gets full speeds of 160+ Mbps, but not often.
Anyone else experiencing awkward slowness? It sucks when updating larger apps.
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Yes. I see slow LTE speeds as well. I posted about it here and Motorola.com and of course no one had anything to say. Top speed at home on wifi is about 180 Mbps. Its rare I get that. I check it with the speed test app and maybe the 3rd time I try it will be at max speed. Normally I see about 50-60. I feel like my LTE speeds are way slower than what they used to be at home and at work. About half of what they were with my old Droid Turbo. Debating getting another one. Not sure if I got crappy antennas or what. I have nothing else to go on since no one else could give me any feedback.

TheColdOne said:
I have been having issues with my phone where it seems to get VERY slow speeds on my home WiFi.
All other devices get very high speeds (eg. Laptop 300+ Mbps, OneplusOne 105Mbps, Nexus 5 60Mbps, Nexus 7 70Mbps).
My Moto X Pure though, for some reason, often gets very unstable speeds varying from 5Mbps to 40Mbps. There is rare occasion when it gets full speeds of 160+ Mbps, but not often.
Anyone else experiencing awkward slowness? It sucks when updating larger apps.
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Yes. I just noticed this yesterday. I'm doing more research but it appears unless I'm right on top of my router it sucks. I'm likely going to be sending back my Pure to moto over this as soon as I confirm other phones do much better (pretty sure my other ones do but need to do back to back comparison of them).

rpstar said:
Yes. I just noticed this yesterday. I'm doing more research but it appears unless I'm right on top of my router it sucks. I'm likely going to be sending back my Pure to moto over this as soon as I confirm other phones do much better (pretty sure my other ones do but need to do back to back comparison of them).
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Initial indications are that it's got abysmal 5.8 ghz performance beyond maybe 15 feet. Much worse than other devices. Very good though on 2.4 only.
Further comparisons seem to indicate it might be on par with other portables. Dunno for sure. Still investigating. Just noticed it as it can get really, really bad on 5.8 while still connected.

I'm having the worst WiFi speeds imaginable right now, while my one plus has great speeds on the same WiFi. Any solutions for this?
Sent from my XT1575 using Tapatalk

I noticed that my Moto X drops WIFI connectivity every few seconds when I'm in a particular area of the house and the phone's Bluetooth is on. My Wife's N5, N7 and my old N4 work OK so it's definetly something to do with the phone.

Actually, I was checking out my network the other day, and was surprising surprised at the actual connection speed it was reading. Laptop gets maybe 650mbps connection in the same location. Behind 2 walls about 60ft away from Asus AC68 router. which hides behind a TV.
internet is local company, 50 up/50 down... down speed is about on par with other devices

I just got this phone yesterday and I've got to say I'm very surprised about it. It's very useful $300 phone and it does everything is $700 phones does. Sorry for bad grammar I'm using text-to-speech. But I've also noticed that if you switch to the 2.4 gigahertz you don't have the Wi-Fi issue for some reason it's only the 5 gigahertz