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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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?!!
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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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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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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.
Herro! first time poster, long time lurker! i searched around, and couldn't really find a similar problem.
I got an HTC one S from Fido, unlocked it, and i've been trying to use it on Bell. I tried several different APN's until one finally worked...but only EDGE speeds! It's also draining my battery extremely quickly. also, when i put my bell sim card inside, preferred network mode changes to WCDMA instead of HSPA (like on the fido sim).
why is this happening? i was told a fido phone would work on bell with no problem. why no 4g speeds?
thank you and i appreciate the responses in advance
HSPA uses WCDMA, so that makes no sense... Under preferred network you should have WCDMA only, 2G only, or WCDMA preferred if I recall correctly as I'm not on stock HTC rom atm so can't check. Are you getting an "E" signal indicator or are you just getting a slow connection? What does it say under About phone>Status>Mobile Network Type?
Set it to Auto mode in the network settings.
frdd said:
HSPA uses WCDMA, so that makes no sense... Under preferred network you should have WCDMA only, 2G only, or WCDMA preferred if I recall correctly as I'm not on stock HTC rom atm so can't check. Are you getting an "E" signal indicator or are you just getting a slow connection? What does it say under About phone>Status>Mobile Network Type?
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yeah, all the tech support i've talked to said it makes no sense either . i get the same outcome whether i put it on WCDMA only or GSM/WCDMA auto. when i do the speed test, it always comes out under 1 mb/s. it actually has the 4G symbol up, but the speed isn't there.
mhmm, it switches between UMTS and HSDPA.
If you have UMTS and HSPDA under status its working, and those are also what connection you're really on. If you always have a 4g icon on status bar it seems like your carrier has modded the software like T-Mobile USA does so it always shows 4g no matter what's up in the real world.
Maybe you're not in a good location and that's why you get slow data. Also I have no idea how Canadian carriers work but I'd guess if you're connected to a 850 MHz cell you'll get worse speeds than on a 1700/1900 one. Don't you guys have insane data caps everywhere, perhaps you hit yours when speedtesting?
did you try a new sim from bell
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
Android 4.1.1
ViperXL 3.2.3
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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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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Gsm only vs gsm/wcdma?
What setting should I choose?
Sent from my HTC Inspire 4G using xda app-developers app
gsm/wcdma
gsm is a 2g network communication technology.
wcdma is apart of newer 3g technologies.
enigma2446 said:
Gsm only vs gsm/wcdma?
What setting should I choose?
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That all depends on what you want. GSM/WCDMA gives you the H+ speeds (and call clarity) while GSM will give you only Edge speeds in terms of data. GSM/WCDMA will allow you to use data while talking on the phone and GSM only is data or phone call (phone call takes priority). While GSM ONLY potentially saves battery, it will ultimately be up to you to decide.
I bought an M8 last month and with a luck like mine I got a Verizon variant.
The problem is it won't connect to 2g networks ( connects to 3g and 4g networks fine. )
First I thought Verizon variant won't be supporting GSM or 2g networks but I did my research and found that it supports GSM networks. My network gives excellent coverage for 2g in my area . My network's 3g and 4g coverage is really poor in my area so I am left with 2g only. If I set it to global mode, it will connect as long as 3g or 4g signals are available but will go on limited service once there are no 3g or 4g signals.
In network settings if I select GSM only it does not work. The network mode remains unchanged . All other network modes can be selected but not GSM only.
Even by dialling *#*#4636#*#* I can't select GSM only.
If I set it to GSM/UMTS/LTE it will connect to only 3g or 4g but will show limited service once there are no 3g or 4g signals .
I have tried a patch for Verizon phones with no 2g options but still no use.
It would be nice if I could any help what could be the problem.
It can't be hardware related because if the modem is damaged then 3g and 4g should also not work.