[Q] Jiayu G3 Signal Confusion - General Questions and Answers

I got a Jiayu G3 knowing it would be a gamble concerning whether or not it supported 3G on the AT&T network, which operates 3G on 850mhz and 1900mhz.
Naturally, I lost the gamble and was stuck with EDGE, or so I thought. I was driving around today, just 1-2 miles away from my home when I looked down at my phone and noticed the H over my cell signal. I ran a speed test and sure enough it confirmed HSPA due to the 4mb down and 1mb up speed. I even go to network provider search menu and it shows both AT&T 2G and 3G selections. Then as I went back home I noticed it was back to EDGE again. Now I have an old Samsung dumb phone that shows what band you are on in a developer menu, and I confirmed both 850mhz and 1900mhz bands have decent signals in my house, yet my Jiayu can't connect to it.
Can anyone help, this has really confused me.....

JonR1230 said:
I got a Jiayu G3 knowing it would be a gamble concerning whether or not it supported 3G on the AT&T network, which operates 3G on 850mhz and 1900mhz.
Naturally, I lost the gamble and was stuck with EDGE, or so I thought. I was driving around today, just 1-2 miles away from my home when I looked down at my phone and noticed the H over my cell signal. I ran a speed test and sure enough it confirmed HSPA due to the 4mb down and 1mb up speed. I even go to network provider search menu and it shows both AT&T 2G and 3G selections. Then as I went back home I noticed it was back to EDGE again. Now I have an old Samsung dumb phone that shows what band you are on in a developer menu, and I confirmed both 850mhz and 1900mhz bands have decent signals in my house, yet my Jiayu can't connect to it.
Can anyone help, this has really confused me.....
Click to expand...
Click to collapse
it use 2100Mhz only for 3G.
typical for china mobile phone...
use google chrome
open this http://www.ejiayu.com/Product-8.html

haybat said:
it use 2100Mhz only for 3G.
typical for china mobile phone...
use google chrome
open this http://www.ejiayu.com/Product-8.html
Click to expand...
Click to collapse
I think you missed the part that I actually get 3G in some areas, and it's definitely not on 2100MHz. It's 850 or 1900MHz.

Related

Touch Cruise, HSDPA, Tmobile, US or EU?

I recently purchased an HTC Touch Cruise from phonesource-USA without doing my homework. (What can I say, I was overwhelmed by the coolness of the phone). Before this phone, I was using an Excalibur and a Titan from HTC. I think I already know the answer to this question, but wanted to ask the home experts out there.
I absolutely love this phone, but am I screwed on 3G when T-Mobile releases it this year?
P.S. I'm located in the U.S.
wagz said:
I recently purchased an HTC Touch Cruise from phonesource-USA without doing my homework. (What can I say, I was overwhelmed by the coolness of the phone). Before this phone, I was using an Excalibur and a Titan from HTC. I think I already know the answer to this question, but wanted to ask the home experts out there.
I absolutely love this phone, but am I screwed on 3G when T-Mobile releases it this year?
P.S. I'm located in the U.S.
Click to expand...
Click to collapse
T-Mobile USA Will use 1700mHz band for 3G and according to some sources it will use 2100mHz to. Witch T-Mobile say it will not have full experience of there 3G. But it will work.
And i think it will be possible to use Radio from Sony X1 witch have same Chip sets and everything except screen.
AT&T 3G
I think I may be in the same boat. I did read up on the phone before I bought it to work on At&t's 3G network. Even thought the phone operates on 1900mghz I have not been able to get it working. It always is on the Edge network.
sultanofsumar said:
I think I may be in the same boat. I did read up on the phone before I bought it to work on At&t's 3G network. Even thought the phone operates on 1900mghz I have not been able to get it working. It always is on the Edge network.
Click to expand...
Click to collapse
are you saying you have not been able to get the phone to work on att's 3G network? i've read on howard forums where other owners are seeing the "H" and "3G", suggesting that others have been able to connect...
3G
That's exactly what I am saying. I have had it configured to the correct frequency for AT&T's 3G since I turned it on. The very first time I put it on 1900 MGHZ I did see a H and then a G, but I'm sure the G was for GSM.
sultanofsumar said:
That's exactly what I am saying. I have had it configured to the correct frequency for AT&T's 3G since I turned it on. The very first time I put it on 1900 MGHZ I did see a H and then a G, but I'm sure the G was for GSM.
Click to expand...
Click to collapse
When you say "configured to the correct frequency for att's 3G", did you manually set the Band to 1900 mHz? or do you have it set to Automatic? for all my HTC devices that support 3G, i set the Band to Automatic and it will pick up and use the att 3G/H band automatically. i only see the "H" when i'm tethered to my laptop or downloading a 1 meg + file.
att 3g
I did it manually. I figured it wouldn't work on auto. I will try the auto detect and see what happens.
3g is up
Well it says G right now, but not 3G. I know I have crappy reception here so maybe it will change. Thanks though.
yep... having good HSDPA/UMTS coverage is a must to access the network. if it says "G", you're using GPRS, "E", you're using Edge, "3G", you're using UMTS, "H" you're using HSDPA. you might check att's website to see if you have high-speed coverage in your location. every HTC 3G capable device (e.g., supports Triband HSDPA) that i've purchased has always connected to att's network with the "Auto" Band setting...
kolobok01 said:
T-Mobile USA Will use 1700mHz band for 3G and according to some sources it will use 2100mHz to. Witch T-Mobile say it will not have full experience of there 3G. But it will work.
And i think it will be possible to use Radio from Sony X1 witch have same Chip sets and everything except screen.
Click to expand...
Click to collapse
Ah this sucks. Why can't America just use the same frequencies as the rest of the world. I don't want to have to purchase another expensive phone right after purchasing this one. Looks like a Sony X1 will eventually be in my future
Thanks for the reply.
3G???
I had it on auto all day, but no little 3G icon. I know there is coverage, becuase my TYTN and even my blackjack picked it up right away. I guess I'll just keep looking..........
AT&T 3G
I am usually indicating 3G or H. I have it set to auto and it semms to be working fine for me.
mpf54 said:
I am usually indicating 3G or H. I have it set to auto and it semms to be working fine for me.
Click to expand...
Click to collapse
I too have found you need to leave the phone set to Auto. A soft reset after you change it from manual selection to auto gets me the 3G back immediately on boot up.
ATT 3G
I have ATT 3G & H in some areas when I travel but my home area does not have 3G coverage only EDGE at the moment. It depends on ATT's coverage whether you will get 3G or H. The phone is fully capable to work with ATT.
got my Orbit 2 today, and HSDPA & UMTS are working fine (in dallas)...
using a polaris with at&t in buffalo, ny. 3g and HSPDA work fine in most areas. sometimes if i go deep within a building it will swtich to edge which is normal.
3G!
cortezzi said:
When you say "configured to the correct frequency for att's 3G", did you manually set the Band to 1900 mHz? or do you have it set to Automatic? for all my HTC devices that support 3G, i set the Band to Automatic and it will pick up and use the att 3G/H band automatically. i only see the "H" when i'm tethered to my laptop or downloading a 1 meg + file.
Click to expand...
Click to collapse
Well now that I put everything on auto and soft reset I am gettin 3G and H UMPTS all over the place. Thanks!

ATT 2G mini tower forcing Edge

My office has an 850 abnd ATT mini cell installed in our server room. The tower was installed because we were getting bad blackberry coverage which are all Edge models. I happen to sit directly outside of the server room and am about 15 feet from the mini cell tower. My Fuze is insistent on using the 850 2G connection instead of getting a 3G signal. I am in downtown Chicago which has fairly decent 3G coverage. I am on the 50th floor of the ATT building but I can't get ATT 3G service! I can go down to lower floors and I have no problem getting 3G. I can only assume my phone is being told "hey, I have a killer 2G signal, lets use that!"
I am able to disable 3G by using com manager. Does something similar exist for disabling 2G? Is there something I can do when I am at work to not use the 850 band? Unfortunately, moving is not an option.
You can enable the 'band select' part of the phone options, and lock it to WCDMA
As I recall, the registry entry to do so is:
Code:
[HKEY_LOCAL_MACHINE\SOFTWARE\OEM\PhoneSetting]
"ShowUMTSBandPage"=dword:00000001
Att uses cdma?
I do believe Da_G just had a bad mental picture of the screen he's talking about.. The page in question is not page you'd tend to visit frequently
Top drop down: Auto, GSM, WCDMA
Bottom drop down: Band selection
I don't The exact options for whats in "Band selection" but it lets you force the phone to use only certain frequencies... The only problem I see is, I do believe AT&T uses the same frequencies for 2g and 3g... or at least depending on what area you're in, 3G might be on 850, or it might be on 1900.. so you travel a bit and your 'force 3g' doesn't work anymore... i'm too tired right now to figure out if your phone would still work in such a situation... I think so >.>
I already had the band select reg key applied. I changed the phone options from auto to WCDMA.
I am seeing an H instead of E but I am not seeing HSPDA speeds. It "feels" like I am on a 2G connection. One speed tst did show 483kbut/sec but I am use to seeing 1200-1500 when I have true 3G.
I know ATT uses different bands in Chicago for 2G and 3G. If they start using 850 for 3G like BG reported then my problem will dgo away.
I just want to stream Cubs games from my MEdiaCenter while im at work... is that so much to ask? Need at least 768 to get a decent picture.
Sounds like you need to enable the Advanced Network tool, and turn on HSUPA
freekquency said:
Att uses cdma?
Click to expand...
Click to collapse
Your typical "GSM" carrier uses Wideband CDMA (W-CDMA) technology for 3G.
The correct answer is NO att does not use cdma. lol
What kind of answer was that anyway? "typical?" hahahha
(ok work time! this 5e isnt gonna install itself
hi
just used bandswitch and change to UMTS then do a solf reset
and u will have 3g. it work for me.
this is the link i have for u.
sry my english is no to good but i try
u need to run without the touch flow
so u can see the program
http://rapidshare.com/files/226975669/BandSwitch.rar

My Fuze ended up on the HSDPA network...

...and nobody at AT&T can tell me why. In fact, when I showed them the phone with the H and 3 bars at the Device Service Center, they claimed they'd never seen such a thing.
The backstory is this: I've had good service at my home for a dozen years. I've always gotten solid E reception. About a month ago, 3G reception started to creep into the picture, although at a very low signal strength. It bounced between E and 3G every few moments and I started getting lots of dropped calls, no dialing, missed calls, etc. where that never happened before. I did some research here at xda and decided to drop Airplane Mode from my settings and add a 3G on-off switch using Advanced Config. After some futzing around, that worked pretty good but now whenever I try to switch to 3G, I get HSDPA. Go figure? Not that I'm complaining, because it's pretty darn fast.
But what the heck...only one Device Service Center in a city this size (San Antonio) and they've never seen a phone showing HSDPA? None of this really means anything, I'm just looking for explanations/comments.
pretty simple man...
3G = HSDPA
kevindena said:
pretty simple man...
3G = HSDPA
Click to expand...
Click to collapse
Then why do my bars read H, not 3G? Actually, based on some online research, HSDPA appears to be a superset of 3G...a.k.a. 3.5G. At any rate, the "tech wizards" at the DSC had never heard of it.
I've got a Touch Pro running on T-Mobile network. Their 3G seems to be a different
frequency than the TP can receive. If I turned on HSDPA and then wander into an AT&T 3G zone and my TP picks up their 3G network, will it overpower my T-Mobile Edge and put me into roaming?
The H is the same as 3G like the other guy had said. Plus if you went into Advance Config. to change the setting then that will replace the 3g with the H. Which is not a big deal. All the phones in Europe use the H symbol in the US we get that damn 3G. Personally I like the H ova the 3G. H=High speed
So really and truly you have nothing to worry about. Should be happy you have the H showing up than the 3G to me H is a lil faster on some phones!!!!!!
att hides their hspa icon under the 3g icon. so you never know the difference between hspa 3.5g or umts 3g. if you flashed a new rom, updated your phone canvas, changed some icons, enabled it, or who knows, chances are you are back to the standard way the rest of the world has it, with the h icon.

[Q] OnePlus One LTE BAND selection?

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.
Click to expand...
Click to collapse
*#*#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.
Click to expand...
Click to collapse
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..

Email from my carrier sunsetting my Relay

Yesterday I received an email from my carrier (Pure Talk USA, using ATT towers) telling me that it's time to buy a new phone. They're (presumably ATT) sunsetting 2G service, rendering my phone unusable. I know the "4G" in the name is probably meaningless, but is the Relay really that old? Has anyone else received notifications like this?
We've never had data service in the US. We were in England a few weeks ago, on a travel SIM which did have data. I found it almost unusably slow, and saw "G" and "E" by the signal bars.
Is it really time?
EDIT - After a little searching, I find that the Relay does both GSM (2G) and UTMS (3G). I had a setting limiting it to GSM, which is the right thing to do to save power, though once I had data in London I should have opened it up to either, in order to get decent speeds. I have only ever used it with GSM in the US, which might be why they think it needs to be replaced. This afternoon I switched to the "either" setting, and I'll need to write to my carrier about this. They sell data also, so I may want to pick that up for a month, and see how well it works with UTMS enabled. It was certainly close to worthless with just GSM.
I've also seen some reference to the phone doing HSPA+, with is either 4G or partial 4G, or at least better than 3G, but that doesn't show on the Cyanogenmod page.
https://wiki.cyanogenmod.org/w/Apexqtmo_Info
https://en.wikipedia.org/wiki/AT&T_Mobility#Radio_frequency_summary
The relay is a 3g phone, but it also supports 2g networks as a fallback. Pure Talk probably just broadcasted that message across the 2g network, and any phone that could receive it, did.
I got an email back from their support, and it's basically as you say. Some time later I plan to disable GSM and make sure I can still talk over 3G.
More information here...
As mentioned previously I had limited the phone to GSM - 2G. The menus in the phone were a bit confusing, because it gave the option of GSM-only, WCDMA-only, GSM/WCDMA-auto, or GSM/WCDMA-preferred. When I first bought SIMs and service for the phone, I looked at WCDMA and said, "That's a Verizon thing, irrelevant for my GSM phone," and set it to GSM-only. In reality that labeling is misleading, because it's not WCDMA, it's UTMS/HSPA - 2G or 3G+. When the phone calls itself "4G" it's not LTE, it's HSPA+, which is better than 3G, but not as good as LTE. So it's a bit disingenuous. However I did test it, and though I don't have data service, when I turn data on, even with no registered APN, it tells me I have HSPA+ service available. ("H+" on the status bar)
I just wish I'd known this before going to England, where I had a travel SIM with data service, tried it, and thought it unusably slow. I was getting "G" or "E" on the status bar, which I have now learned is essentially dialup or a bit faster.

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