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Hello guys
Any one knows why I get this message not registered on network if I try to make any call whenever I switch to WCDMA only even though I have a signal.
I'm not using AT&T sim card, but I can use it just fine with GSM band.
Thanks
Sounds like network registration failure. Chances are your service doesn't support AT&T 3G/WCDMA bands and when you're trying to force it to WCDMA it won't allow you to register on AT&T's 3G because you don't have their service.
If you're using T-Mobile, for example - you can only register via GSM/EDGE connections as they don't share compatible 3G connections
Sent from my SAMSUNG-SGH-I997 using XDA App
TheMan42 said:
Sounds like network registration failure. Chances are your service doesn't support AT&T 3G/WCDMA bands and when you're trying to force it to WCDMA it won't allow you to register on AT&T's 3G because you don't have their service.
If you're using T-Mobile, for example - you can only register via GSM/EDGE connections as they don't share compatible 3G connections
Sent from my SAMSUNG-SGH-I997 using XDA App
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Click to collapse
is there a way around this ?
TheMan42 said:
Sounds like network registration failure. Chances are your service doesn't support AT&T 3G/WCDMA bands and when you're trying to force it to WCDMA it won't allow you to register on AT&T's 3G because you don't have their service.
If you're using T-Mobile, for example - you can only register via GSM/EDGE connections as they don't share compatible 3G connections
Sent from my SAMSUNG-SGH-I997 using XDA App
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Sounds not good at all. So because the device is from AT&T I can't use any 3G connection with different carrier other than AT&T
P.s. why do I have a good signal in wcdma connection?
Thanks anyway
Only certain carriers have the WCDMA bands that AT&T uses. AT&T uses 850Mhz and 1900Mhz for WCDMA, so does Rogers in Canada - therefore, if you use Rogers as a service, you can utilize WCDMA no problem.
Now, if you're using T-Mobile here in the U.S. - who uses AWS 1700/2100Mhz for their WCDMA connection - it won't work as it's an entirely different band. There's no fix as this is a hardware limitation until at least AT&T buys T-Mobile officially.
What service are you using anyway? When you say WCDMA signal, what do you mean? Do you have an 'E' by your signal bars or H+?
Sent from my SAMSUNG-SGH-I997 using XDA App
TheMan42 said:
Only certain carriers have the WCDMA bands that AT&T uses. AT&T uses 850Mhz and 1900Mhz for WCDMA, so does Rogers in Canada - therefore, if you use Rogers as a service, you can utilize WCDMA no problem.
Now, if you're using T-Mobile here in the U.S. - who uses AWS 1700/2100Mhz for their WCDMA connection - it won't work as it's an entirely different band. There's no fix as this is a hardware limitation until at least AT&T buys T-Mobile officially.
What service are you using anyway? When you say WCDMA signal, what do you mean? Do you have an 'E' by your signal bars or H+?
Sent from my SAMSUNG-SGH-I997 using XDA App
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I'm using Iwireless if you have heard about it they use T-Mobile phones. I mean the signal reception it looks just fine if I switch to the WCDMA band, but can't make any call or use the web and I have H+ by my signal bars.
oh sh** just found out that in their website the use as same as T-Mobile 1700/2100Mhz
Thanks for your help
sinan2010 said:
I'm using Iwireless if you have heard about it they use T-Mobile phones. I mean the signal reception it looks just fine if I switch to the WCDMA band, but can't make any call or use the web and I have H+ by my signal bars.
oh sh** just found out that in their website the use as same as T-Mobile 1700/2100Mhz
Thanks for your help
Click to expand...
Click to collapse
Hmm, I'd give them a call then, you may just be experiencing a network issue in your area, does it happen outside of a 10 mile radius of where you first noticed it?
Sent from my SAMSUNG-SGH-I997 using XDA App
TheMan42 said:
Hmm, I'd give them a call then, you may just be experiencing a network issue in your area, does it happen outside of a 10 mile radius of where you first noticed it?
Sent from my SAMSUNG-SGH-I997 using XDA App
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yeah I'll just give them a call, or I'll get new sim card because mine is 6 years old it might be it.
thanks again and appreciate your help
It's been good to me but does it work for you?
I remember doing this for a few other phones with good results.
Now I'm doing it with my Sensation and it looks like its working... but I want more people to test it. Test battery drain and data speeds.
Anyways,
Type *#*#4636#*#* in dialer > Phone info > Change WCDMA to GSM auto (PRL) and that is it. You should see the battery drain less on stand by.
post results here... and a thanks would also be good.
if you only use 2g,you can set like that
Sent from my HTC Sensation 4G using XDA App
Yes, it does save battery. Same as going into Mobile Network settings.
Sent from my HTC Sensation 4G using XDA Premium App
GSM Auto (PRL): gives me 4G speeds
GSM only:gives me edge speeds
GSM Auto (PRL) isn't in the mobile network settings.
gsm auto prl will save the user a bit more power because it wont force the phone to continuasly hunt for a stronger signal
And just in case you guys want to play with some settings:
WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities. This setting appears to just have the phone attempt to stay connected to the data communication type that works the best. (Maybe the Samsung Galaxy S will take advantage of this???)
Unknown - If none of the above fit or the phone is acting weird as far as connecting to the carrier, you will see your preferred network type is set to this
leyvatron said:
GSM Auto (PRL): gives me 4G speeds
GSM only:gives me edge speeds
GSM Auto (PRL) isn't in the mobile network settings.
gsm auto prl will save the user a bit more power because it wont force the phone to continuasly hunt for a stronger signal
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Click to collapse
So what's the downside? Edge speed more often? If there was no downside why wouldn't it be the default?
I find gsm auto gives slightly slower speeds in a speedtest than wcdma only... (only two settings I use) and that's it.
Sent from one of my phones..... If only I could remember which one....
I notice that forcing 2g, calls get that kinda pulsating GSM radio interference noise whereas forcing 3g it does not occur!!!
Anyone else notice this?!!
strung said:
I notice that forcing 2g, calls get that kinda pulsating GSM radio interference noise whereas forcing 3g it does not occur!!!
Anyone else notice this?!!
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Click to collapse
i thought 3g, 4g, 2g or what ever was for data purposes only....
laker666 said:
i thought 3g, 4g, 2g or what ever was for data purposes only....
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From what I understand, 4g is 3g, they are HSPA and HSPA+. 2G is GSM. So there are two separate radios in your phone and on the towers.
I just tested this on my phone and can confirm that 3G is a lot less noisier call-quality wise than 2G.
Voice uses 3G as well. TMO throttled back 2G a while back to make 3G faster, so using any phone on 2G mode nowadays is gonna suck more than it would otherwise.
zaventh said:
Voice uses 3G as well. TMO throttled back 2G a while back to make 3G faster, so using any phone on 2G mode nowadays is gonna suck more than it would otherwise.
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if that is the case how come i can turn of my data and stilll make crystal clear phone calls? not saying you are wrong just trying to understand
strung said:
I notice that forcing 2g, calls get that kinda pulsating GSM radio interference noise whereas forcing 3g it does not occur!!!
Anyone else notice this?!!
Click to expand...
Click to collapse
Yep.. 2G / EDGE uses the older GSM data transmission standard, while 3G/4G uses CDMA technology to transmit data.
T-Mobile uses all GSM technology. CDMA is something totally different and is used by Verizon/Sprint in the US.
I'm not a radio engineering expert, but the main difference between 2G and 3G is the protocol. 3G uses more efficient algorithms to compress/decompress the audio (and data) signals. This is the primary reason 3G is faster than 2G to begin with. T-Mobile uses 3G for voice, which means that, in general, calls will LIKELY sound clearly and crisper on 3G than 2G, on average. This is all dependent on network conditions, your 2G signal, your 3G signal, your particular handset, and your own hearing capabilities and preferences. But the idea is like an Mp3 encoding... 3G is 320kbps and 2G is 128kbps... maybe sometimes they sound the same to some people, but technically 3G is "better" under ideal circumstances.
But the 2G throttling I was remembering was actually AT&T, not T-Mobile, though they likely have done something to a similar effect by now.
http://www.ofb.biz/safari/article/512.html
wcdma is 3/4g
zaventh said:
T-Mobile uses all GSM technology. CDMA is something totally different and is used by Verizon/Sprint in the US.
I'm not a radio engineering expert, but the main difference between 2G and 3G is the protocol. 3G uses more efficient algorithms to compress/decompress the audio (and data) signals. This is the primary reason 3G is faster than 2G to begin with. T-Mobile uses 3G for voice, which means that, in general, calls will LIKELY sound clearly and crisper on 3G than 2G, on average. This is all dependent on network conditions, your 2G signal, your 3G signal, your particular handset, and your own hearing capabilities and preferences. But the idea is like an Mp3 encoding... 3G is 320kbps and 2G is 128kbps... maybe sometimes they sound the same to some people, but technically 3G is "better" under ideal circumstances.
But the 2G throttling I was remembering was actually AT&T, not T-Mobile, though they likely have done something to a similar effect by now.
http://www.ofb.biz/safari/article/512.html
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Click to collapse
my question is if 2g and 3/4g have any effect on call quality, how can i receive crystal clear call quality with my data turned off. im not sure 2g, 3g, or 4g have any effect on call quality
None of your voice goes through your data connection. The ONLY way there is any difference is if there is some kind of electromagnetic interference from inside the phone caused by 2G and not by 4G.
As stated above, All voice calls and SMS come through without a data connection at all.
r4d14n7 said:
None of your voice goes through your data connection. The ONLY way there is any difference is if there is some kind of electromagnetic interference from inside the phone caused by 2G and not by 4G.
As stated above, All voice calls and SMS come through without a data connection at all.
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Disabling data does not mean you disconnect from the 3G/4G network. Turn mobile data off and then look under Settings>About Phone>Status, and look at Mobile Network Type. You're phone is still connected to UMTS/HSPA/EDGE/GPRS ... or whatever other type of network it was connected to. And you're not connected to both 2G and 3G simultaneously. Its one or the other and all data and phone transmissions are sent over whichever network you're connected to.
phburks said:
Disabling data does not mean you disconnect from the 3G/4G network. Turn mobile data off and then look under Settings>About Phone>Status, and look at Mobile Network Type. You're phone is still connected to UMTS/HSPA/EDGE/GPRS ... or whatever other type of network it was connected to. And you're not connected to both 2G and 3G simultaneously. Its one or the other and all data and phone transmissions are sent over whichever network you're connected to.
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+ 1
Sent from my LG-P999 using XDA App
Ah, fair enough. I was under the impression that voice always went through a GSM connection, whether WCDMA was active or not. Has this changed in the last few years?
r4d14n7 said:
Ah, fair enough. I was under the impression that voice always went through a GSM connection, whether WCDMA was active or not. Has this changed in the last few years?
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Click to collapse
Don't think it's ever been that way. Phones will switch from one type of mobile network to another depending on user settings and signal strength, but you're only connected to one type of network at any given time. GSM networks utilize 2G technologies to allow for voice and data, but not simultaneously. GSM networks also utilize 3G/4G technologies to allow voice and data simultaneously.
Here's a good source of info on different technologies used by GSM networks:
http://www.gsmworld.com/technology/index.htm
My bad. Thanks for the link though.
When on 2g my speakers of my surround sound and car audio will make static from the phone... 3g doesn't do this. 2g and 3g are different.
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So - on an Android phone, do I need to check "Data Enabled" for the better voice quality, or will the 3G/4G for better voice be enabled by default?
No, enabling or disabling your mobile data connection will not affect call quality directly. Your device will connect to the best network available regardless of data being enabled. The only setting you can look at is your preferred network type under mobile network settings.
My phone does something weird. When the data mode, shown beside the battery icon, is shown as 3G, no data transfer can be made until it is changed to 'H'. This gets very annoying.
The problem is that it stays at 3G until I want to do some data transfer, then it changes to 'H' which takes some time.
Anybody gets this as well? Is there anyway to prevent this?
Sent from my HTC Desire S using XDA App
H means hsdpa,which is High Speed Downlink Packet Access. It is 3.5G. And it is faster than 3G.
Sent from my HTC Desire S using XDA App
I think, its metwork config...
I had this very same issue in UK (Virgin pay as you go)
Sent from my HTC Desire S using Tapatalk
Same issue with o2 Pay Monthly, although it generally switches to H quite quickly when data access is required.
CatcherInRye said:
H means hsdpa,which is High Speed Downlink Packet Access. It is 3.5G. And it is faster than 3G.
Sent from my HTC Desire S using XDA App
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Correct me if I'm wrong. H means HSPA, which is 3.5G, and 3G is 3G in itself, and G is 2G? I thought 2G didn't allow data transmission? So isn't 'G', 3G?
I understand HSPA is supposed to be faster than 3G, but the problem is that 3G doesn't allow any data transmission.
ffforce said:
Correct me if I'm wrong. H means HSPA, which is 3.5G, and 3G is 3G in itself, and G is 2G? I thought 2G didn't allow data transmission? So isn't 'G', 3G?
I understand HSPA is supposed to be faster than 3G, but the problem is that 3G doesn't allow any data transmission.
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Click to collapse
"WCDMA"
H = HSPA = 3.5G
3G = 3G
"GSM"
E = EDGE = 2.5G
G = GPRS = 2G
All of them allow data access, or should do anyway.
ffforce said:
Correct me if I'm wrong. H means HSPA, which is 3.5G, and 3G is 3G in itself, and G is 2G? I thought 2G didn't allow data transmission? So isn't 'G', 3G?
I understand HSPA is supposed to be faster than 3G, but the problem is that 3G doesn't allow any data transmission.
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Click to collapse
WCDMA
H = HSPA = 3.5G
3G = 3G
GSM
E = EDGE = 2.5G
G = GPRS = 2G
Both 2G and 3G allow data access.
No, "G" is not "3G". "G" means GPRS (General Packet Radio Service) and is an old standart to transfer data via GSM. It is, in fact, the slowest ond one of the oldest.
There are two networks, "2G" which is "G" or "E" (EDGE which is is a litlle bit faster than "GPRS" - and "3G" (now even "4G" ) which is a high spead network. "H" should mean "HSDPA" or "HSPA"
Oooops, to slow.
In addition: Via 3G you can do data connection and phone calls at the same time, this you can not do in 2G
ffforce said:
My phone does something weird. When the data mode, shown beside the battery icon, is shown as 3G, no data transfer can be made until it is changed to 'H'. This gets very annoying.
The problem is that it stays at 3G until I want to do some data transfer, then it changes to 'H' which takes some time.
Anybody gets this as well? Is there anyway to prevent this?
Sent from my HTC Desire S using XDA App
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Click to collapse
Your phone will check to see what the best connection available is before downloading. The wait is down to your network provider's service and availability. And possibly your radio. It's not that it wont download on 3G. It will. It's just that 99 times out of 100 if 3G is available, so is HSDPA so it'll go for that one over 3G every time. Unless you are on my network provider. Then you'd get better consistent data transfer over a piece of wet string.
You could go into your phone setting and choose 'WCDMA only' if you generally have good coverage and want to cut the wait out?
Dial *#*#4636#*#*, from the resulting menu select 'Phone Information' then scroll to the bottom and change the drop-down menu to 'WCDMA only'.
Does that help?
Tip:
You can also do this without dialing a code:
Got to settings/wireless & network/Mobile network/Network mode
So you don't have to remember the code if you want to change settings
wnp_79 said:
Your phone will check to see what the best connection available is before downloading. The wait is down to your network provider's service and availability. And possibly your radio. It's not that it wont download on 3G. It will. It's just that 99 times out of 100 if 3G is available, so is HSDPA so it'll go for that one over 3G every time. Unless you are on my network provider. Then you'd get better consistent data transfer over a piece of wet string.
You could go into your phone setting and choose 'WCDMA only' if you generally have good coverage and want to cut the wait out?
Dial *#*#4636#*#*, from the resulting menu select 'Phone Information' then scroll to the bottom and change the drop-down menu to 'WCDMA only'.
Does that help?
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Click to collapse
I tried this. For now it seems that it is stuck at HSPA now! Thanks! Am I right to assume that under WCDMA only mode, I either get HSPA data or no data at all? The phone will not go to 3G or 2G right? (there's no 2.5G here)
Thanks to the others who clarified the 2G,3G,3.5G terms. I understand it more clearly now!
ffforce said:
Am I right to assume that under WCDMA only mode, I either get HSPA data or no data at all? The phone will not go to 3G or 2G right? (there's no 2.5G here)
Thanks to the others who clarified the 2G,3G,3.5G terms. I understand it more clearly now!
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WCDMA only means you will only have HSPA and 3G connections. You will not have, as you wrote, 2G. 2.5G means EDGE which is still a 2G connection but a little bit faster than GPRS, and right, you will not have that.
Sent from my HTC Desire S using XDA App
HSPA includes HSDPA and HSUPA. I really don't know the difference between them.
Sent from my HTC Desire S using XDA App
HSPA is faster than HSDPA, and HSUPA is the standart for uploads. You should visit Wikipedia for detailed information.
Sent from my HTC Desire S using XDA App
i know you could do it with the galaxy s3, but it seems like it cant be done with this phone.
the secret menu has practically nothing in it, and only WCDMA preffered, LTE only, etc
i want to be able to force a particular band, could this be done by editing the build prop? i want to try and force 900mhz
can it be done, or am i searching for hours on the internet for nothing?
Sounds like you have a CDMA phone. "No SIM Card". Sprint or Verizon ????
If this is the case, then you are looking in vain.
AT&T HTC OneX
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NAH i have an australian htc one xl. i am on a carrier (not particularly the fastest) but i have unlimited data and wanted to see if i could increase my download speeds by locking onto a particular band lol
Are you talking about selecting something like this in the phone info "secret" menu?
Sent from my HTC One XL
Venomtester said:
Sounds like you have a CDMA phone. "No SIM Card". Sprint or Verizon ????
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Click to collapse
You're confusing WCDMA with CDMA.
WCDMA refers to the HSPA (3G) radio on this device, and not to be confused with the CDMA network used by Verizon and Sprint.
http://en.wikipedia.org/wiki/3G#Overview
Is this what you are talking about?
legend221 said:
[2G/3G/3.5G] Preferred Network Types Explained & How To Change It Easily
I'm noticing most of us are on the AT&T Network, yet there are those that do not want or need 3G/3.5G and want to use 2G or have another carrier so they cant take advantage of the speeds because they are on a Network such as T-Mobile.
Obviously someone using primarily or mainly 2G will see significantly more battery life.
This is good for someone that rarely uses data service or goes online using WIFI for the most part.
To change or edit your Preferred Network type go to your Phone app
then enter the following: *#*#4636#*#*
>Phone Information
>Set Preferred Network Type
Now you are able to change and edit the way your phone looks for and uses the Network you are currently on.
The Terms are explained below:
Preferred Network Types change the type of frequency the phone searches for.
Android is used on several devices that can gain access to different cell carriers.
For simplicity, there are two main types of cell carriers, GSM and CDMA.
The following popular data communication technology is associated with each cell carrier type:
GSM = GPRS (2g), EDGE(2g), UMTS(3g), WCDMA(3g), HSDPA(3g) {Cell Carrier examples: AT&T and T-Mobile}
CDMA = CDMA*(2/3g) EV-DO(3g) WiMax(3/4g) {Cell Carrier examples: Verizon and Sprint}
Now that the general stuff is out of the way, here's my take on the Preferred Network types:
WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities. This setting appears to just have the phone attempt to stay connected to the data communication type that works the best.
Unknown - If none of the above fit or the phone is acting weird as far as connecting to the carrier, you will see your preferred network type is set to this
When using the 'only' options you should still be able to make calls.
To put things into perspective, The Nexus One is set to WCDMA preferred as default and the Droid Incredible is set to CDMA auto (PRL).
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