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Ok, first off my Vibrant has flat out awful reception.. fluctuates randomly between 4 bars and 0 bars on 3g and sometimes cant get more than 1 bar 3g in the middle of an HSPA+ city(Memphis). Its not a bar display problem, sometimes my speedtest shows download speeds as low as 150kbps. If that wasnt bad enough it takes forever to switch between 3g and edge, by forever I mean sometimes a full 60 seconds+ and if Im running a data using program (Pandora for instance) it sometimes refuses to switch at all... Is this a known issue or is it just my phone?? I know my G1 did not have these issues.
Try doing a master reset on your device.
If the master reset dosen't work, you might reflash the full stock rom from the android dev section. There's alot of people that have been reporting substantial increases in their reception and connection speeds.
And if you think it takes a long time to switch b/t 3g and edge, you ought to try owning an evo for a month. It takes FOREVA to switch the 4g radio on and off, at least 3 min for me, takes about that long to turn it on after a reset too.
Just because you're in a HSPA+ city doesn't mean you're on the HSPA+ network.
If you're having problems with it aquiring the 3G network try a new sim.
The G1 has mediocre reception but it is aided by the fact that the antenna is at the top and not the bottom like all other phones.
Bump,
I am actually having this problem too, I have tried a factory reset, I also tried reflashing the T-Mobile stock fimware, but it has not helped. I have good 3g and edge reception where I live.
Oh yeah, I am using ATT on the vibrant.
When this happens (ie. not switching between network or slow switch time), you can trigger airplane mode and then undo it and the phone will pick up the right network or switch network faster. For example, if use 2g network is checked, it will enter Edge, etc.
I see exactly what you guys are talking about, locking it on 3G will fix this right up. I was driving down the freeway and I KNOW I was passing 3G towers, but the Vibrant stayed on EDGE for way too long. I locked it on 3G and I never lost the signal and it was 4 bars for nearly all of the trip so I know 3G was there, it just wasn't switching back fast enough.
Looking under the Samsung debug mode, the Vibrant will hold onto 3G until -115 Recieve power, which is basically -115dBm under the Android network menu. Of course over -101 RSCP, it will show 0 bars so it's hard to know when reception is acutally really bad.
It should show -0 bars at -113dBm, 1 bar until -101dBm, 2 bars until -89dBm, 3 bars until -79dBm, and 4 bars until -51dBm.
just disable the extra frequencies from service menu and it will be super quick.
I'll try that, at any rate it should be remedied by Samsung.
mohitmoudgil said:
just disable the extra frequencies from service menu and it will be super quick.
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Click to collapse
Are you talking about locking it to 3g or something else?
ttabbal said:
Are you talking about locking it to 3g or something else?
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Click to collapse
I'm pretty sure hes talking about only having it on 1900/1700 (combi bands)
pyun said:
If the master reset dosen't work, you might reflash the full stock rom from the android dev section. There's alot of people that have been reporting substantial increases in their reception and connection speeds.
And if you think it takes a long time to switch b/t 3g and edge, you ought to try owning an evo for a month. It takes FOREVA to switch the 4g radio on and off, at least 3 min for me, takes about that long to turn it on after a reset too.
Click to expand...
Click to collapse
Does it matter if you flash from nandroid backup or oden?
heygrl said:
I'm pretty sure hes talking about only having it on 1900/1700 (combi bands)
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Click to collapse
That's an unintuitive user interface. sheesh.
Looking at Wikipedia, it looks like TMO uses 1700/2100 WCDMA and 850/1900 GSM (2G/EDGE). There's also a WCDMA 1900, but according to what I'm reading, TMO doesn't use WCDMA signaling on 1900, just GSM/EDGE.
To try it, go to the service menu using the steps for 3G locking and select 1700 only instead of WCDMA ALL. Then go back using menu/back (not the back button) twice and go to Combi Bands and select WCDMA 2100. That should enable just 1700/2100 WCDMA 3G service. Turning on PCS 1900 does seem to get me an EDGE connection. Enabling GSM 850 ONLY gives me emergency calls only, so it might be worth keeping on for 911 calls. 850 goes further so it might have service when the others don't.
I don't get 3G service in my basement, for example, so I would like to keep EDGE enabled. Hopefully enabling just the bands that I would use will help keep the search times down.
JasonCook said:
Does it matter if you flash from nandroid backup or oden?
Click to expand...
Click to collapse
To really get a full re-flash, you need Odin right now. It should be possible to do it without Odin now, but I don't know if anyone has put together a stock ROM that way yet.
I didn't see any difference in speed/stability with the stock Odin flash, but others might have. It seems to depend on the network more than the local stuff.
Band IV 1700 includes 2100Mhz so you don't have to enable it. From what I can tell, no.. combi-bands doesn't do much for the slow 3G requisition. I'm just going to lock it on 3G when I'm not at home.
PaiPiePia said:
When this happens (ie. not switching between network or slow switch time), you can trigger airplane mode and then undo it and the phone will pick up the right network or switch network faster. For example, if use 2g network is checked, it will enter Edge, etc.
Click to expand...
Click to collapse
This didn't work for me. I would do this, and it would only work changing from 3G to EDGE. But, from when I would put it on use 3g, it would first change from airplane mode to EDGE, then take around 1 min to change to 3G.
mohitmoudgil said:
just disable the extra frequencies from service menu and it will be super quick.
Click to expand...
Click to collapse
How do I disable the frequencies? I can only seem to enable them.
Something strange I've noticed with my Galaxy S II is that data / internet will only work if the 'H' (for HSDPA) is in the status bar, but not with '3G' there...the green arrow will appear next to the 3G when I try to connect to something but it will just time out unless it happens to switch to 'H'.
Anyone know why this would be? Is only the HSDPA network working with my phone, but regular 3G won't?
It is possible that the 3G cells in your area are fully loaded with users.
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nvm
i didn't read it well
Same problem here, on 3.
Wondered if it was the phone or the network! If it's a problem with the phone it'll be fixable/covered by warranty though, right?
Same here, it sits on 3g then i try to load a page etc and it goes to h like it carnt use 3g , im on t mobile and they have full coverage where i am
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I found an older thread that says it's a feature, keeping the phone in 3G mode to save battery until you do something that requires data which switches it over to H. I've kept a closer eye on my phone and that does seem to be what it's doing, usually taking a second or two to switch over each time I use data.
However, there have still been some times where it stays on 3G and is unable to load data.
Yeah i think your right and also it does not change sometimes and kinda hangs, be nice for it to switch over to H abit faster without battery drain.
AXIS of Reality said:
I found an older thread that says it's a feature, keeping the phone in 3G mode to save battery until you do something that requires data which switches it over to H. I've kept a closer eye on my phone and that does seem to be what it's doing, usually taking a second or two to switch over each time I use data.
However, there have still been some times where it stays on 3G and is unable to load data.
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Click to collapse
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I have the same issue with my phone to on t-mobile, not working on 3g then working on H.
It is a right pain to be honest.
No way of stopping this battery save? I would rather use more battery.
It's the network. I have no explanation but only Edge and HSDPA work whether on Samsung or Nokia.
Just tested, this does not occur for me, at least right here, right now. Comfortably loading pages on Google with just 3G signal (T-Mobile UK).
It's faster when I stand on my bed upstairs for HSDPA but 3G does work. Stock firmware from T-Mob, no modifications.
AXIS of Reality said:
Something strange I've noticed with my Galaxy S II is that data / internet will only work if the 'H' (for HSDPA) is in the status bar, but not with '3G' there...the green arrow will appear next to the 3G when I try to connect to something but it will just time out unless it happens to switch to 'H'.
Anyone know why this would be? Is only the HSDPA network working with my phone, but regular 3G won't?
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Click to collapse
Hey mate,
I have the galaxy s i9000, with optus here in sydney. same problem, only switches to "H" when i make some sort of data request (load a page, open an app that uses internet), it takes a couple of seconds to switch from 3G to H. Sometimes, it keeps flicking back and forth between 3G and H like its having problems connecting to H
I complained to optus, they reckon i'm lying. Go figure.
joeykatoa said:
Hey mate,
I have the galaxy s i9000, with optus here in sydney. same problem, only switches to "H" when i make some sort of data request (load a page, open an app that uses internet), it takes a couple of seconds to switch from 3G to H. Sometimes, it keeps flicking back and forth between 3G and H like its having problems connecting to H
I complained to optus, they reckon i'm lying. Go figure.
Click to expand...
Click to collapse
Sorry.. just to add on, i've tried about 13 different modems on my i9000 and it happens with all of them.
The only fix I've come by? dial *#301279# and disable HSDPA altogether thats the only way my phone will actually load any data on 3G
I have the same thing, but as i understand H and H+ are the highest form of 3G, not a different thing. So I am wondering what mode we are in when 3G appears. UMTS?
Its all very annoying to be honest.
None of my other phones have this problem as they always stay on HSPDA
Same problem here to the extent that pages fail to load on 3g and come up with the error then when I refresh the page once its on H it loads straight away.
Actually this problem is making my phone more or less not usable.
I use the slingplayer alot, keeps skipping on the Galaxy S II as it seems to keep switching between H and 3G.
Put the sim card into my ZTE Blade (Orange San Francisco) and streams constantly with no problem with signal staying on H.
With all the threads relating to 3g and connectivity issues..we can deduce that SGS2's modem really sucks big time..and still no firmware update to correct this even though large number of people is facing some sort of problem with mobile internet which is a main function on todays smartphone.
Sent from my GT-I9100 using Tapatal
Anyone know who to e-mail with examples at Samsung?
I guess they won't fix a problem if they don't realise there is one.
Some people will prefer longer battery when its on 3G then H, others will want the constant H.
I got mine a week after it released. The first two updates mine did the same thing, but instead of timing out, it would drop all signal and display the circle. After a reboot signal would come back. From KE7, it has not done it again.
AT&T in the U.S.
same problem, mode switches around when using data, 3 australia
Anyone noticed on gs2 it switches to 3g until H is needed for data. If I'm in an H area it doesn't stay in that mode all the time.
I know H drains battery more so on the gs1 could the same functioning be transported. In theory giving better battery life?
Just my input and maybe a tribute to my old faithful gs1 and the great community
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Same for my sgs2 (I am on orange)
At first I just thought signal was not so great in area I live but then the H pops back when I start downloading and using net, I can see why they have made it this way but I am also a little unsure as to how much this helps, the swapping from 3g to h then 3g to h and so on and if this itself does not either slow our use as we wait for it to swap back to h and if saves energy or uses more? (like in a car changing gears more often uses more fuel)
skibadee said:
Anyone noticed on gs2 it switches to 3g until H is needed for data. If I'm in an H area it doesn't stay in that mode all the time.
I know H drains battery more so on the gs1 could the same functioning be transported. In theory giving better battery life?
Just my input and maybe a tribute to my old faithful gs1 and the great community
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Click to collapse
Yes. There are quite a few people with 3G and HSDPA issues:
http://forum.xda-developers.com/showthread.php?t=1074396
http://forum.xda-developers.com/showthread.php?t=1073958
Yours may not be an actual problem if your getting decent speeds but mine is failing to stay on HSDPA when downloading and getting very poor results (64kbps) in an area which I normally get around 2000kbps.
I've spoken to Samsung but they have yet to respond with a resolution.
Dont know if its an issue for me as it swaps back to 3g once its got all it needs (page loaded) its stays 3g until i click on next page or it needs it then jumps to H again.
voodoochild2008 said:
Dont know if its an issue for me as it swaps back to 3g once its got all it needs (page loaded) its stays 3g until i click on next page or it needs it then jumps to H again.
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Click to collapse
Same here - no problem with speeds or whatever, but once it's finished it changes back to 3g. I'm on vodafone.
I'm in Australia with H+ and it will only switch to that when I'm actively downloading something, could be a battery saving feature?
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It's not an issue, my SGS does the same thing.
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Ahh see my sgs (i9000)didn't. It was always on H or 3g depending on signal.
I flashed God knows how many Roms and kernels (mainly darkys & voodoo/speedmod) it never switched like this.
Oh and my battery lasts way longer on my sgs2
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I noticed this too but I have yet to properly test it to see if that's actually what it's doing....
my nexus one also stays on H always and never switches back and forth for the data transfer.
however i thin kit is network dependent sometimes, because when i traveled to a different city a few weeks ago suddenly it would switch between 3G and H anytime data transferred. as soon as i drove about 15 minutes north out of that city, it returned to constant H and back to normal.
so i dont know exactly how or why this is caused. i'd prefer to jsut stay on H and not change back and forth.
Depending on Carrier actively terminating HSPA when data transfer finished?
Is the same on my HD 2 .
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I chose Orange via CPW. I received my SGS 2 yesterday. Such a stunning phone but I'm returning it as I can't connect via HSPDA. My two O2 Galaxy S's sitting on same desk connect at H without issue. If I take out the Orange contract SIM and replace it with one of my O2, the SGS 2 connects at HSPDA immediately. Definitely an Orange issue.
Hopefully I can take advantage of CPW policy to find a network that works for me. Would be great if I could keep the handset (put protective screen on it and time spent customising handset) and pop in another SIM.
Anyone tried changing the preferred network type? On my Nexus One the default (which I never changed) was WCDMA preferred, on the GSII it's GSM/CDMA auto (PRL). A brief bit of research online suggests that this does affect how the phone switches between available network types.
(*#*#4636#*#* then Phone Information, then scroll down, for those who don't know where this is)
snoopstah said:
Anyone tried changing the preferred network type? On my Nexus One the default (which I never changed) was WCDMA preferred, on the GSII it's GSM/CDMA auto (PRL). A brief bit of research online suggests that this does affect how the phone switches between available network types.
(*#*#4636#*#* then Phone Information, then scroll down, for those who don't know where this is)
Click to expand...
Click to collapse
thank you for useful info
I get this issue when I have GSM/WCDMA (Auto mode) selected.
Speed tests are rather slow even when it switches to H. When I select WCDMA only I get great speeds (3Mb+). Still switches between 3G and H though.
My issue is that I've never been able to connect to H+ in central London on Three. Not sure if it's my phone or the network.
This is actually how the umts/hspa technology works. HSPA as a technology is only for data, so it's used only then. Carriers drops the connection back to umts if data is not used.
This is also related to the FastDormancy bug discussed here. So it might also relate to why this phone does it so often or fast.
I've tested two usb-modems and another phone in my location and they all do exactly the same thing what galaxy s ii.
My network provider always drops the connection to 3G if data is not used, it can't be forced. A way around it is to keep a small download going.
E.g. if I use a usb-modem on my laptop and want to keep it in HSPA (for some reason...), I just put wget with 1kt/s download in the background.
The networks capacity is not limitless, so older technologies is used instead.
Hope this clarifies things.
gvoima said:
This is actually how the umts/hspa technology works. HSPA as a technology is only for data, so it's used only then. Carriers drops the connection back to umts if data is not used.
This is also related to the FastDormancy bug discussed here. So it might also relate to why this phone does it so often or fast.
I've tested two usb-modems and another phone in my location and they all do exactly the same thing what galaxy s ii.
My network provider always drops the connection to 3G if data is not used, it can't be forced. A way around it is to keep a small download going.
E.g. if I use a usb-modem on my laptop and want to keep it in HSPA (for some reason...), I just put wget with 1kt/s download in the background.
The networks capacity is not limitless, so older technologies is used instead.
Hope this clarifies things.
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Click to collapse
My problem is not that it goes back to 3G but it's dropping back every few seconds, even whilst downloading. It doesn't happen on my other Android handsets on the same network. So it is a problem.
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I'm in U.S. on AT&T, with an HTC Inspire "4G" and SGS2. The Inspire stays on H+ at all times, idle or active. The SGS2 does bump up to H+ on demand it seems. BTW, The SGS Tools app with the dialer codes still works fine on this device. I've been messing with network bands since I got the phone.
Just to add. I'm using the same vodafone sim card from my old sgs and it always stayed on H unless signal was 3g only area.
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I've posted in many threads regarding this
It didn't do it on my SGS with same sim card/network. Speed results between the two are very similar. Only network performance issues experienced were when immediately after i swapped out the sim card from captivate to SGSII and shortly after i switched my data plan from smartphone plan to medianet
As stated Im on tmobile and my nexus 4 only shows Edge, No H or 4g. Its kinda frustrating because sometimes itll show H+ for a few sec then ill lose Service all together no signal bars no data signal then after a few moments its back to Edge lol. anyone else having this issue? im wondering if its a faulty 4g radio or something ?. thanks in advance.
Illusion81 said:
As stated Im on tmobile and my nexus 4 only shows Edge, No H or 4g. Its kinda frustrating because sometimes itll show H+ for a few sec then ill lose Service all together no signal bars no data signal then after a few moments its back to Edge lol. anyone else having this issue? im wondering if its a faulty 4g radio or something ?. thanks in advance.
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Click to collapse
Maybe you only have EDGE service in your area? Or have you confirmed there is HSPA there with another phone?
Theres definitely HSPA in my area, i also have a galaxy s3 and s2 never ran into any issues. since i popped my sim in the nexus, service just comes and goes. but never any 4g
Illusion81 said:
Theres definitely HSPA in my area, i also have a galaxy s3 and s2 never ran into any issues. since i popped my sim in the nexus, service just comes and goes. but never any 4g
Click to expand...
Click to collapse
Hmmm, make sure you don't have "Use only 2G networks" enabled in the data settings. I'm sure you checked that already though.. Check your APN settings maybe
yup that was the first thing i checked and Nope its not set to 2g only. About the APN setting i never touched that, is there a certain setting its suppose to be set to for Tmbile? its at default now..
Maybe try these? http://forum.androidspin.com/showthread.php/2615-SETTINGS-T-Mobile-APN-Settings
Or try to mess around with your 4636 menu
anyone know off fast dormancy??
thanks
djnord said:
anyone know off fast dormancy??
thanks
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Click to collapse
Yes, but fast dormancy isn't working for me. My phone is constantly on H and never switches to 3G. Do you see your phone switch from H to 3G when idling?
I just got my N4 and I definitely notice fast switching from H+ to 3G. It does seem to be when idling.
philhyde said:
I just got my N4 and I definitely notice fast switching from H+ to 3G. It does seem to be when idling.
Click to expand...
Click to collapse
Looks like it's working with only some carriers. I checked with 2 carriers in my country and it does not switch on any of those. My old S2 used to switch, so it's some setting in N4 itself and nothing to do with the carriers.
Just add ro.ril.fast.dormancy.rule=0 to your build.prop
luiseteyo said:
Just add ro.ril.fast.dormancy.rule=0 to your build.prop
Click to expand...
Click to collapse
Are you sure about that. AFAIK, ril properties differ between manufacturers so property from one manufacturer might or might not work on another.
My phone is always on H and never idles on 3G so I tried to enable fast dormancy by setting ro.ril.fast.dormancy.rule=1 and nothing changed.
On T-Mobile, my N4 will idle on HSPA-10, but will jump to HSPA-15 when I transfer data. In both cases, it will only shows "H" in the status bar.
HSPA-10 is 3G (7.2), while HSPA-15 is 4G (HSPA+).
up!
SpookyTunes said:
On T-Mobile, my N4 will idle on HSPA-10, but will jump to HSPA-15 when I transfer data. In both cases, it will only shows "H" in the status bar.
HSPA-10 is 3G (7.2), while HSPA-15 is 4G (HSPA+).
Click to expand...
Click to collapse
that's what its supposed to do, hspa+ only when data is moving.
SpookyTunes said:
On T-Mobile, my N4 will idle on HSPA-10, but will jump to HSPA-15 when I transfer data. In both cases, it will only shows "H" in the status bar.
HSPA-10 is 3G (7.2), while HSPA-15 is 4G (HSPA+).
Click to expand...
Click to collapse
Mine idles on UMTS on T-Mobile D:
Hey guys, I have extreme data transfer issues. After lots of searching, Fast Dormancy seems to be the most likely cause for this. Switching from hspa to hspap goes extremely quickly when I request data (web page, music, etc.).
However, no data is transferred for around 30 secs to 1 minute after a switch to hspap.
I've tried disabling hspap in the build.prop, this caused an unrecoverable bootloop on multiple firmwares (including stock).
Wherever hspap is available, I basically have no data connection.
I'm not the only one with the issue, multiple people on German android forums seem to experience this with the Nexus 4.
So is there a definitive way to disable FD?