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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.
Hey is there a way to switch between using 3G and 4G? I know there is a use only 2G networks option but what about 3G/4G? Thanks
I don't think so...
To my understanding, T-Mobile uses the same network technology for both 3G and 4G (HSPA+) so turning off 4G would also turn off 3G. And if that isn't the case, it still wouldn't make sense to turn it off. It's only affect would be slower internet speeds. I could be wrong here though, lets see what the other posts say.
BioRivet said:
To my understanding, T-Mobile uses the same network technology for both 3G and 4G (HSPA+) so turning off 4G would also turn off 3G. And if that isn't the case, it still wouldn't make sense to turn it off. It's only affect would be slower internet speeds. I could be wrong here though, lets see what the other posts say.
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I think you're right BioRivit. Unlike the switch between 2G and 3G, which involved totally different frequencies and underlying technology, 4G is basically the same technology as 3G, except with a few modifications that allow a faster speed.
XD
andrewNY said:
I think you're right BioRivit.
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It's been a long time since I last heard that... Lol
Ok thanks guys. I guess my real question was supppsed to be how do you tell if you are on tmobile's 3G or "4G". I feel like I've never seen a 3G icon in the status bar, only 4G. Thoughts?
T-Mobile uses the 3g network to transmit 4g. Unlike Verizon or Sprint which have a structural difference between 3g and 4g, T-Mobile is using the 3g network with data compression. This is how they expanded from 3g to 4g instantly, no change in network structure. You won't see 3g again if you have a 4g phone like the G2x. You can only use Edge (2g) or 4g. Hope that helps.
Alright thanks guys
Is there a way to see and change the LTE BAND that my phone is on? Rogers support aws, 2600, 700. So I was wondering if I could manually change between them. The S5 has that option in the hidden menu, so I'm hoping I could do the same on this one.
Thanks.
The phone choose the band himself, if he don't find bands authorized by your phone company, he can't use them.
tonymtl said:
Is there a way to see and change the LTE BAND that my phone is on? Rogers support aws, 2600, 700. So I was wondering if I could manually change between them. The S5 has that option in the hidden menu, so I'm hoping I could do the same on this one.
Thanks.
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*#*#46363#*#* > Phone information > Set Preferred Network Type > 'LTE/GSM auto (PRL)'
That's as far as you can get in telling it what network to operate on. It won't let you select specific bands (at least not stock). Mine was set to 'TD-SCDMA, GSM and LTE' out of the box (international version) and since I don't plan to use my phone in China anytime soon, it didn't make sense for the phone to waste resources searching for a TD-SCDMA (China's homebrew 4G) signal. Haven't noticed much improvement to my LTE signal though, still the weakest radio I've seen in a 'flagship' in a while.
Thanks.
I am also on Rogers.
Does that mean when I am on the phone, it will revert to EDGE instead of 3g by using the LTE-edge setting?
I have major issues with reception on this phone.
LTE Works Fine but the 3G/H+ signal is awful, absolute disaster on this phone. It is extremely, extremely weak. And I lose coverage often and over 50% of the times my calls go straight to voicemail because Rogers uses 2g/3g for calling. The phone can't drop back to 2G or 3G in time to receive calls when on LTE
Rly frustrating. Have tried playing with all the settings.
Same issue
hashim71 said:
I have major issues with reception on this phone.
LTE Works Fine but the 3G/H+ signal is awful, absolute disaster on this phone. It is extremely, extremely weak. And I lose coverage often and over 50% of the times my calls go straight to voicemail because Rogers uses 2g/3g for calling. The phone can't drop back to 2G or 3G in time to receive calls when on LTE
Rly frustrating. Have tried playing with all the settings.
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I'm having issues with 3G H+ too. Dont know its CM issue or not coz I had nice H+ signals on Color OS...
Can't even use internet data. most of the time network drops after using internet for a bit.. Network just suddenly gone and after that it comes back with no internet. Internet comes back online after a while...
Really worried.. and annoyed coz can't seem to find any solve for this. Even Mahdi rom had this issue..
Hi
I have a sony Z(lte version). My network is very slow on hspda and I don't want to use lte(4g).
So only option is hspa+ which has good speed.
The problem is everywhere in network related options you can set wcdma only. not hspa+. Wcdma is for both hspda and hspa+.
I've seen many threads about wcdma/lte switching and know about *#*#4636#*#* menu. But in that menu, there's no way to seperate hspda from hspa+.
Is there any way to use hspa+ only? A way to disable hspda would be good too.
Thank you for reading my question.
mpowend said:
Hi
I have a sony Z(lte version). My network is very slow on hspda and I don't want to use lte(4g).
So only option is hspa+ which has good speed.
The problem is everywhere in network related options you can set wcdma only. not hspa+. Wcdma is for both hspda and hspa+.
I've seen many threads about wcdma/lte switching and know about *#*#4636#*#* menu. But in that menu, there's no way to seperate hspda from hspa+.
Is there any way to use hspa+ only? A way to disable hspda would be good too.
Thank you for reading my question.
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I think that when you enable the wcdma option, (which is what I do very frequently too) the phone tries to use the best, between hspa and hspda, so if it doesn't use it, it's probably not the phone's problem, since I get to use h+ whenever I use the wcdma only option...
This is what I think that happens, I am not sure whether this is the truth ot not, so another opinion would be usefull.
Why do you not want to use LTE?
Well it might not be available + using lte drains a lot of battery...
Planterz said:
Why do you not want to use LTE?
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as moki said, it's not an option in my home because of poor network quality.also drains battery too fast to use regularly.
Mokiwipeout said:
I think that when you enable the wcdma option, (which is what I do very frequently too) the phone tries to use the best, between hspa and hspda, so if it doesn't use it, it's probably not the phone's problem, since I get to use h+ whenever I use the wcdma only option...
This is what I think that happens, I am not sure whether this is the truth ot not, so another opinion would be usefull.
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I thought like this before. but I saw sometimes in worst conditions of network, it prefers h+. So I think its just a way to save battery and if I don't want it, I can disable it somehow...
its network dependent.. you cant force it.. its still 3g anyway.
Please someone answer.
There are two features on my phone, I want ine of them removed, and this is not possible?!
I can't believe this is true in an android phone.
*sigh*
I'm extremely disappointed and frustrated from my p7p cellular connectivity, especially 3G.
It is almost nonexistent, I tried to flash multiple roms , factory images , different carriers , rooting , with no use.
I tried using network guru to force the modem to use wcdma , with no luck .. I spotted my phone using wcdma UMTS couple of times , so there is no defect in the modem .
I'm always unreachable unless I forced it to use GSM .
Any idea how to resolve it , or workaround it ?
Can I erase modemst1 /2 and check ,or it is risky ?
Please I need help
Are you in the USA? Because 3G is either phased out or will be very soon for most networks.
I have to ask "why" are you trying to use 3G? The phone is capable of 5G and in the event that 5G is spotty you can turn 5G off and use 4G/LTE exclusively which will allow you to make calls and have data access at the same time. 3G is nearly obsolete. YMMV
schmeggy929 said:
Are you in the USA? Because 3G is either phased out or will be very soon for most networks.
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No, I'm in Jordan
jaseman said:
I have to ask "why" are you trying to use 3G? The phone is capable of 5G and in the event that 5G is spotty you can turn 5G off and use 4G/LTE exclusively which will allow you to make calls and have data access at the same time. 3G is nearly obsolete. YMMV
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I know, but here in Jordan ,3g still active for calls , volte is only provided by one carrier. And naturally, you won't be able to call using only lte coz by default, when you make a call , the phone switches from lte to 3g, and when 3g is unavailable it switches to GSM . And it's going to take long time to switch between those bands. I'm mostly unreachable by this process
So by default it's NR/LTE/ wcdma / GSM ..
jaseman said:
I have to ask "why" are you trying to use 3G? The phone is capable of 5G and in the event that 5G is spotty you can turn 5G off and use 4G/LTE exclusively which will allow you to make calls and have data access at the same time. 3G is nearly obsolete. YMMV
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Meanwhile here people have no idea what volte is and carriers dont enable it by default, i have to call them to enable it for me every time i switch a phone. 3G is still the most used network for calls there, even though 4G has even better and more stable coverage. I live in the european union.
I am only familiar with 3G with Verizon in the United States with the US version of the p7p with Verizon modem. The bands associated with 3G Verizon work well when you are outside of major cities and go more rural. But, max speeds of CDMA with Verizon bands are sub optimal at 1mbps. The call quality is great though as the old Verizon commercials "can you hear me now" reflect.