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3G drops to GSM when receiving calls and during calls

I searched all the threads and found nothing on this as far as I can see. I have been having this since day one with my G1. Every time I receive a call on my G1 or during the call it drops from 3G to GSM. I had stock T-Mo roms on my G1 (Pre/Post Cupcake) then JF 1.51 and now cyanogen 4.0.2 and this problem persists. I called T-Mo a few times on this and they exchanged my G1 3 times and gave me a new battery and charger free of charge. Does anyone else have this issue or know of a work around? This happens when I am at home and work. I travel for work to different locations and it still happens. When my phone rings it automatically drops 3G and goes to GSM (no icon next to the radio icon in the status bar). While making calls it stays on 3G for about a few seconds before it craps out and drops to GSM. It totally skips EDGE and GPRS. T-Mo said they sent out radio antenna tech's to the antennas near my home and they said all is fine and dandy. I live In Queens NY and work in the Bronx. When I travel to Brooklyn its the same as well as driving though Manhattan. I hope someone can help me with this.

PeterC18st said:
I searched all the threads and found nothing on this as far as I can see. I have been having this since day one with my G1. Every time I receive a call on my G1 or during the call it drops from 3G to GSM. I had stock T-Mo roms on my G1 (Pre/Post Cupcake) then JF 1.51 and now cyanogen 4.0.2 and this problem persists. I called T-Mo a few times on this and they exchanged my G1 3 times and gave me a new battery and charger free of charge. Does anyone else have this issue or know of a work around? This happens when I am at home and work. I travel for work to different locations and it still happens. When my phone rings it automatically drops 3G and goes to GSM (no icon next to the radio icon in the status bar). While making calls it stays on 3G for about a few seconds before it craps out and drops to GSM. It totally skips EDGE and GPRS. T-Mo said they sent out radio antenna tech's to the antennas near my home and they said all is fine and dandy. I live In Queens NY and work in the Bronx. When I travel to Brooklyn its the same as well as driving though Manhattan. I hope someone can help me with this.
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ive always had this as well .. just never considered it a bug lol ... but i could see why someone would wanna keep their 3g while on a call .. reminds me of how sidekicks would lose data connectivity due to a call

xidominicanoix said:
but i could see why someone would wanna keep their 3g while on a call .. reminds me of how sidekicks would lose data connectivity due to a call
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Could you elaborate?
If you've had 3 G1's and a tech says there's nothing wrong with the network then it's clearly an issues with cupcake, be it a feature or a bug...
I don't really see why you would want to keep data conectivity while in a call, (unless you're downloading something in the background..?) so it sounds like a way to save battery..

AdrianK said:
Could you elaborate?
If you've had 3 G1's and a tech says there's nothing wrong with the network then it's clearly an issues with cupcake, be it a feature or a bug...
I don't really see why you would want to keep data conectivity while in a call, (unless you're downloading something in the background..?) so it sounds like a way to save battery..
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Here's a perfect example where 3G would rule when working properly.
I'm talking to my wife on my BT headset while driving home from work. I have my G1 on my dash with google maps running with traffic patterns showing. While talking I am able to talk clearly on 3G and still see where traffic is building so I can avoid it. Being stuck in rush hour in NYC sux homeless man [email protected] Whenever I do this and my 3G connection drops my call quality drops and we both hear it while we're talking and then it cuts in and out and the call drops then I dont get updates. It's a feature I would really like to have. Even when Im working and talking and downloading a new update of an app. This happens when I am at a static location as well. I know driving from cell tower to cell tower can have bad effects but it does the same when I'm just at home or any of my work locations. When 3G works properly which is rare its amazing. Its helped me get un lost and find my way many of times.
Point being when T-Mo released the 3G statement they said all users with 3G phones will expierence higher call quality from the extra bandwidth. Why would they cap or or disable it when they are promoting it? I see the the point of saving battery life but it still shouldnt be happening. 3G is made for that feature to work voice + data being accessed together.

It might just be there 3g network, imo tmobile reception is horrible. Like at my house it is so f'ed up, I can sit in my chair and have 3 bars then walk 2 feet and lose service. It does this all through my house and at my work. They said it must be something in the buildings I am in, bull**** I say because ATT never does that nor did vzw when I used them.

same thing happens with me and 3g and calls..also about the house thing, hows this one for u ill be sitting in the same spot and have good 3g reception and all of a sudden it drops to edge. I know a way around this is to set phone to 3G only but then in areas where theres non im screwed

I don't get it. My wife who had the original iPhone and then 3g and now 3gs never had this issue. She would stay on Edge and 3g depending if she waned to save batery life. My old BB 8700g would always stay on Edge never drop to GSM in my apartment. My 3G doesnt even fall to Edge it goes right to GSM. This is really annoying.

every t-mobile phone I have does this
I'm pretty sure its normal

No one knows if this is a hardware, software, or network problem. Except maybe HTC/T-Mobile/Google.
If your phone stays connected to 3G, it's all good. If it drops down to EDGE, even if for half a second, it will NOT reconnect to 3G until you hang up.

c2tmdsn said:
every t-mobile phone I have does this
I'm pretty sure its normal
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My coworkers Samsung t819 doesn't. That's regular cell phone not a smart phone.
Gary13579 said:
No one knows if this is a hardware, software, or network problem. Except maybe HTC/T-Mobile/Google.
If your phone stays connected to 3G, it's all good. If it drops down to EDGE, even if for half a second, it will NOT reconnect to 3G until you hang up.
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If any of those 3 know they should fix it or at the very least advertise that the calls you make are dropped to the lower bandwidth of the GSM network.
T-Mo finally got 3G for the last year don't dumb it down guys. Fix this.
Yes it is true once your phone drops beneath 3G it will not go to 3G until you hang up the call.

try running 3g only or wdma only by creating phone info shortcut on anycut .. im going to try that out and see if it ever drops .. should be a temporary fix for you atleast with the whole maps thing and such but if you ever in an edge only are your screwed

turboyo said:
try running 3g only or wdma only by creating phone info shortcut on anycut .. im going to try that out and see if it ever drops .. should be a temporary fix for you atleast with the whole maps thing and such but if you ever in an edge only are your screwed
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I changed it to wcdma only in phone info. Hopefully this works. Everywhere I travel to throughout NYC has 3G. Hopefully this works. Also I have noticed that when downloading anything from 3G be it the market or browser it would drop from 3G to Edge as well.

PeterC18st said:
I changed it to wcdma only in phone info. Hopefully this works. Everywhere I travel to throughout NYC has 3G. Hopefully this works. Also I have noticed that when downloading anything from 3G be it the market or browser it would drop from 3G to Edge as well.
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*UPDATE*
While at home downloading apps from Android Market on 3G with wcdma only selected the radio dropped with no netowkr connection. Bust.

PeterC18st said:
I don't get it. My wife who had the original iPhone and then 3g and now 3gs never had this issue. She would stay on Edge and 3g depending if she waned to save batery life. My old BB 8700g would always stay on Edge never drop to GSM in my apartment. My 3G doesnt even fall to Edge it goes right to GSM. This is really annoying.
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Did she use att or tmobile with the iphone? Because att has a much stronger 3g network then tmobile which could be why. I am pretty sure it is something to do with tmobiles network and not your phone, perhaps your area has to many users for it to stay on 3G. I have read about how the cell towers work and they have only so many bands for each user to access at any given time so if tmobile doesn't have enough towers or those things mounted on the towers it may be set up so you only get 3G for data usage and not calls since they don't technically require it to work.

crpercodani said:
Did she use att or tmobile with the iphone? Because att has a much stronger 3g network then tmobile which could be why. I am pretty sure it is something to do with tmobiles network and not your phone, perhaps your area has to many users for it to stay on 3G. I have read about how the cell towers work and they have only so many bands for each user to access at any given time so if tmobile doesn't have enough towers or those things mounted on the towers it may be set up so you only get 3G for data usage and not calls since they don't technically require it to work.
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My wife is on ATT. Isn't lower frequency better at penetrating through walls and such? (T-Mo 1700 MHz and 2100 MHz compared to ATT 1800 MHz) They haven't booted their 850 MHz antennas yet so I hear.
If that is true then why not boot me down to Edge or gprs why all the way down to gsm? I been living in the same area for 26 years. I have been with T-Mo before they even had antennas in my area and walking outside was the only way to get a signal with my phone. Now I get full reception in and out of my apartment and 3G connectivity in my apartment with a signal strength of -93dBm through out my apartment on 3G and -79 dBm on Edge.
T-Mo stated that this should not be happening. Hence the 3 phones new battery and charger and techs to the antennas. I'm starting to think its a HTC Android problem and not a T-Mo problem. Hopefully a new radio update can fix it.

I didn't even know GSM was still used in that way, I thought GPRS would be the bare minimum. How can you tell the difference? I use to only get a G icon and I looked it up and for the g1 it said that meant GPRS, what does it show for GSM? Not like any of this matters though.
I really have no idea why all this is happening to your G1 but I hope it gets resolved, good luck.
edit: on the tmobile coverage map it says edge/gprs and 3g, no gsm. does that make any difference? I checked for NYC overall not any specific boroughs.

crpercodani said:
I didn't even know GSM was still used in that way, I thought GPRS would be the bare minimum. How can you tell the difference? I use to only get a G icon and I looked it up and for the g1 it said that meant GPRS, what does it show for GSM? Not like any of this matters though.
I really have no idea why all this is happening to your G1 but I hope it gets resolved, good luck.
edit: on the tmobile coverage map it says edge/gprs and 3g, no gsm. does that make any difference? I checked for NYC overall not any specific boroughs.
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GSM is what Edge Gprs and 3G run off of. Think of it as a progression. GSM>GPRS>EDGE>3G.
The way I know it is on GSM is to the left of the Radio icon on the home screen there is another icon that shows the network your on. 3G=3G E=EDGE G=GPRS and no icon means GSM. GSM is still being used. Most SMS and MMS messages get sent to your from through GSM while you are on a call.

2G/3G connection every now and then falls away.

2G/3G connection every now and then falls away.
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I have the following problem.
Hi I have a plan with extra fast with endless online. But every now and then suddenly falls away and my connection voice and 2G/3G can I just restore it in airplane mode to turn back and pick up.
Are there more people with same problem? I have an G1. The SIM card only 8 weeks old.
I like to hear from you.

I think most T-Mo customers suffer from that, you see they have very small 3G coverage and Edge is super slow on tmobile. You must've had a faster carrier like veri$on,$print,At$T,O2, etc before. Well i had sprint before and they had some great speed and i always had Evdo, but now i only get this damn edge connection.

Help please, 2G & 3G problem

Hi guys,
I just bought the HTC Legend, I'm loving it, but I have a very big problem. The problem is that I want to force the phone to stay on EDGE and not going to 3G to save some battery. Now, if I put the phone to GSM Only, it won't make any data connection, but if I put it to GSM or WCDMA Auto, the phone works perfectly.
Please can anyone help? my phone is running out of battery with only about 4-5 hours of regular usage (little chat, 4-5 short calls, emails, a bit a of web browsing)...I'm sure that I'm not abusing. is it normal that the battery only last for just a few hours?
Please advise, thank you!!

jkzh said:
Hi guys,
I just bought the HTC Legend, I'm loving it, but I have a very big problem. The problem is that I want to force the phone to stay on EDGE and not going to 3G to save some battery. Now, if I put the phone to GSM Only, it won't make any data connection, but if I put it to GSM or WCDMA Auto, the phone works perfectly.
Please can anyone help? my phone is running out of battery with only about 4-5 hours of regular usage (little chat, 4-5 short calls, emails, a bit a of web browsing)...I'm sure that I'm not abusing. is it normal that the battery only last for just a few hours?
Please advise, thank you!!
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According to the specs, 2G doesn't actually increase your battery life much, if at all.
Unless of course you're in an area where 3G is spotty and switching/finding 3G coverage can eat up the battery.

Kwen said:
According to the specs, 2G doesn't actually increase your battery life much, if at all.
Unless of course you're in an area where 3G is spotty and switching/finding 3G coverage can eat up the battery.
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I see, but I want know if the phone can actually stay with 2G and still be able to access internet. Basically, if I put the phone to GSM Only mode, the phone just gives me voice service only.....
please help!!!!

I think htc solved this problen with new update 2.05.405.2

[Q] 3G @ no bars not switching to edge

Hey folks, I noticed that on my At&t samsung focus that the connection often doesn't switch down to edge when 3G is at no bars(tested-no data). And I know that areas I visit often have edge coverage because i can turn off 3G manually and get good reception... but any insights/solutions as to why the focus doesn't automatically switch bands/connections? radio bug?
edit: I did do the hsupa/dpa release hack via diagnosis console.

This also bugged me. In my experience this is not limited to the Focus. I encountered the same issue with the Tilt 2. It took probably a complete loss of 3G signal for the phone to switch to Edge and then even though the Edge signal had 2 bars, as soon as it got just a trace of 3G signal it went right back. Fortunately with the Tilt 2 I am able to turn off 3G and the phone stays in Edge all day long in areas where 3G os crappy. I wasn't able to do that with the Focus.

frighte said:
Hey folks, I noticed that on my At&t samsung focus that the connection often doesn't switch down to edge when 3G is at no bars(tested-no data). And I know that areas I visit often have edge coverage because i can turn off 3G manually and get good reception... but any insights/solutions as to why the focus doesn't automatically switch bands/connections? radio bug?
edit: I did do the hsupa/dpa release hack via diagnosis console.
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I'm having these problems as well and I also did the hack. Since then I keep getting cannot connect messages in IE. It was so frustrating that I undid the hack(?) and this happens all the time. Can someone give me the settings to make sure I restored the original settings.

[Q] Omnia 7 data connection problem

Hi, since I got this phone and I've been having problem with the data connection, wifi is working fine, but 3G is not, it shows the 3G symbol but keep switching to H symbol and back again to 3G constantly, i never been able to surf the web or do anything online on 3g connection since i got it.
I tried putting in the setting from my provider and got the samsung network app thingy but nothing helped, even after updating to NoDo.
This is really bothering me i cant enjoy the phone when im outdoors, i switched back to my iPhone 3gs temporarily.
I really hope this can be solved.
I'm thinking if there is some way to make the phone only works on 3G and turn the H off.

rhythmosis said:
Hi, since I got this phone and I've been having problem with the data connection, wifi is working fine, but 3G is not, it shows the 3G symbol but keep switching to H symbol and back again to 3G constantly, i never been able to surf the web or do anything online on 3g connection since i got it.
I tried putting in the setting from my provider and got the samsung network app thingy but nothing helped, even after updating to NoDo.
This is really bothering me i cant enjoy the phone when im outdoors, i switched back to my iPhone 3gs temporarily.
I really hope this can be solved.
I'm thinking if there is some way to make the phone only works on 3G and turn the H off.
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H is for HSDPA and is far more faster than 3G. I reckon you run ADC on startup using samsung tools and hopefully the problems with connection will be resolved. Alternatively contact your sim provider for network configurations.

Here it also switches between H and 3G, or well it did on my other wp7 phone my (european) omnia uses 3g+. That's normal; the H mode probably eats your battery alive, and it only switches to it when your data connection is active (i.e. data is being transferred)
Your problem appears to be an Access Point problem, you can configure one yourself at the mobile connection settings page. (bottom). Check the web for the settings you'll need.
You see most phones are configured automatically by their providers, but the omnia probably isn't supported.
Hope this helps

the APN for China Unicon is "3gnet"
just add it your 3g connection will work.