I am having trouble in an area where Immix wireless is the carrier which is GSM 1900, im on ST(ATT most times WCDMA 1900) and a roaming agreement exists. But when I am in this area, data never connects. Our i777's should automatically switch from WCDMA 1900 to GSM 1900 correct? My baseband is UCLE5 btw. Thanks.
pahick said:
I am having trouble in an area where Immix wireless is the carrier which is GSM 1900, im on ST(ATT most times WCDMA 1900) and a roaming agreement exists. But when I am in this area, data never connects. Our i777's should automatically switch from WCDMA 1900 to GSM 1900 correct? My baseband is UCLE5 btw. Thanks.
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Click to collapse
did you verify that you have enabled all the bands?
nisssan18 said:
did you verify that you have enabled all the bands?
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How would you do that? I777 modems are locked and should switch automatically, correct?
Related
Hello All,
I am on tmobile and had samsung galaxy s before i got SGS2 from at&t (my wife upgraded). i unlocked/rooted the phone after reading through the posts and it worked like a charm!
My concern right now is that I am always on edge data network with tmobile. can anyone help me on this. Tethering is also not much of use when i am on the slowest connection. Please help.
Can't do much about it since AT&T version doesn't support the 3g/4g band for T-mobile.
At&t gs2 doesn't support t-mobile frequency for 3 g.
Sent from my SAMSUNG-SGH-I777 using xda premium
I thought this phone has all the bands to support all networks.
parags1982 said:
I thought this phone has all the bands to support all networks.
Click to expand...
Click to collapse
No only AT&T.
My guess is that international version supports all the bands not the carrier branded sgII
^Even international version doesn't support T-Mobile 3g/4g (HSPA+) network.. Not many phones support their network. Or maybe it will.. but not everywhere
AT&T SGSII
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100
T-Mobile SGSII
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 1700 / 2100
International SGSII
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
I am following another post that lets says HOW TO: "Enable 850Mhz 3G Network Frequency on your Samsung i9000 Galaxy S''. will update how it goes... fingers crossed..
parags1982 said:
I am following another post that lets says HOW TO: "Enable 850Mhz 3G Network Frequency on your Samsung i9000 Galaxy S''. will update how it goes... fingers crossed..
Click to expand...
Click to collapse
No luck. i read somewhere that i may need to install another modem?
Is there anyone out there with the same issue as mine?
any experts out there?
parags1982 said:
I thought this phone has all the bands to support all networks.
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Click to collapse
The AWS (1700) bands are supported only by a handful of carriers. It doesn't exist at all in Europe and Asia. There's little reason for manufacturers to include it on their global phones as so few people use it. It's the reason the T-Mobile SGS2 has a Qualcomm chip instead of Exynos like the rest of them. After the merger, it won't even exist in the U.S. any longer as AT&T plans on using it (1700) for LTE. If you want versatility and the ability to use unlocked phones, change to AT&T.
parags1982 said:
I am following another post that lets says HOW TO: "Enable 850Mhz 3G Network Frequency on your Samsung i9000 Galaxy S''. will update how it goes... fingers crossed..
Click to expand...
Click to collapse
In order to get T-mo 3G, a phone must support HSPA on 1700MHz AWS band, not 850MHz. As such, only phones from T-Mo or some Candadian carrier support 1700 band. Rest of the world use 900/2100 for 3G and AT&T uses 850/1900 for 3G/4G.
You are never going to get 3G on T-Mo on any phones from AT&T. Period. Give it up.
foxbat121 said:
In order to get T-mo 3G, a phone must support HSPA on 1700MHz AWS band, not 850MHz. As such, only phones from T-Mo or some Candadian carrier support 1700 band. Rest of the world use 900/2100 for 3G and AT&T uses 850/1900 for 3G/4G.
You are never going to get 3G on T-Mo on any phones from AT&T. Period. Give it up.
Click to expand...
Click to collapse
thanks. i give up
TMobile uses 1700 up, 2100 down. If the handset doesn't support 1700, you are out of luck.
Correct. Many phones support the 2100 MHz International band.
T-Mobile's network is weird though, and uses both 1700 and 2100 MHz at the same time.
My guess is that UMTS1700 support and not 42 Mbps HSPA+ is why the T-Mobile variant of the GS2 is such an oddball phone.
NO AT&T phone and only a small handful of international phones support T-Mobile's 1700 MHz band.
Similarly, only one or two T-Mobile phones (The Vibrant being one of them) support any of AT&T's 3G bands, but none support all of AT&T's 3G bands to my knowledge.
The interesting thing about this entire thing is that if you go into the modem band selection it lists 5 different wcdma bands including the aws 1700. I enabled those bands and tried using a tmo sim but alas it still only worked on edge. It may have just been there cosmetically rather then actually supporting aws bands. use dialer code *#2263# to access the band selection menu. Maybe there is a way to get it to work.
pb1866 said:
The interesting thing about this entire thing is that if you go into the modem band selection it lists 5 different wcdma bands including the aws 1700. I enabled those bands and tried using a tmo sim but alas it still only worked on edge. It may have just been there cosmetically rather then actually supporting aws bands. use dialer code *#2263# to access the band selection menu. Maybe there is a way to get it to work.
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Click to collapse
I agree with you and have tried exactly what you did (along with other bands) but still not working.
pb1866 said:
The interesting thing about this entire thing is that if you go into the modem band selection it lists 5 different wcdma bands including the aws 1700. I enabled those bands and tried using a tmo sim but alas it still only worked on edge. It may have just been there cosmetically rather then actually supporting aws bands. use dialer code *#2263# to access the band selection menu. Maybe there is a way to get it to work.
Click to expand...
Click to collapse
Typically, the s/w supports multiple versions of h/w. Just because an option's in the menu doesn't mean the h/w's available to support it. The same thing happened with the T-Mobile G2X. It was supposed to be quad-band, the option was in the ROM, but the radio wasn't there to support all the bands.
Hello All,
I am having issues connecting to the 3G network of Vodafone in India. My SGS2 is from AT&T and I was able to root it & unlock it and its works fine with the call and other stuff. I flashed the UnNamed v1.0.4 ROM and its been pretty stable.
But after activating my 3G service here, all I see is E with the 2 arrows. I researched online and saw that we need to change the CSC code. I looked up at the CSC code on my phone by dialing in *#272*<your IMEI># and its shows as ATT.
Can you please help me on how to change the CSC to INU (India Localisation) so that I can access the 3G network here.
Thanks
sammyguy said:
Hello All,
I am having issues connecting to the 3G network of Vodafone in India. My SGS2 is from AT&T and I was able to root it & unlock it and its works fine with the call and other stuff. I flashed the UnNamed v1.0.4 ROM and its been pretty stable.
But after activating my 3G service here, all I see is E with the 2 arrows. I researched online and saw that we need to change the CSC code. I looked up at the CSC code on my phone by dialing in *#272*<your IMEI># and its shows as ATT.
Can you please help me on how to change the CSC to INU (India Localisation) so that I can access the 3G network here.
Thanks
Click to expand...
Click to collapse
you probably just need to add your apn. Flash http://forum.xda-developers.com/showthread.php?t=1299705 its based on the international version so it might let you select your network.
First, make sure that Vodafone in India works in UMTS 850/1900/2100mhz bands. If they are using 900mhz band, this phone does not support it. As much as I know most European and Asian countries use either 900mhz or 2100mhz or both.
It could be frequency or any other issue but if you are looking to change your CSC then look up app "Samsung Galaxy S / S2 CSC" in the market and give it a try. Remember that your ROM has to support MultiCSC.
EDGE with data functioning is a clear sign of a band mismatch, not an APN issue.
Entropy512 said:
EDGE with data functioning is a clear sign of a band mismatch, not an APN issue.
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Click to collapse
+1
India is 2100mhz while the at&t sgsii is 850/1900 so 3g won't work. The t-mobile sgsii would work though, t-mobile's 3g frequency is 1700/2100.
Sent from my SAMSUNG-SGH-I777 using Tapatalk
fone_fanatic said:
+1
India is 2100mhz while the at&t sgsii is 850/1900 so 3g won't work. The t-mobile sgsii would work though, t-mobile's 3g frequency is 1700/2100.
Sent from my SAMSUNG-SGH-I777 using Tapatalk
Click to expand...
Click to collapse
AT&T GS2 supports 850/1900/2100 3G bands. So, if the paticular carrier uses 900 for 3G, it won't work.
Or if it happens to use the 1700 MHz AWS band - but I don't know if any Indian carriers do.
Entropy512 said:
Or if it happens to use the 1700 MHz AWS band - but I don't know if any Indian carriers do.
Click to expand...
Click to collapse
1700 seems to be North America exclusive Rest of the world primarily use 900 and 2100 for 3G with Brazil and Austrialia also use 850 and 1900 in addition to 900 and 2100.
I live in the US and was wondering if the i9100 would be capable to use cdma for verizon, sprint or cricket? Im wondering because when you go to mobile network it says gsm only, cdma only and gsm/cdma.
barondebxl said:
I live in the US and was wondering if the i9100 would be capable to use cdma for verizon, sprint or cricket? Im wondering because when you go to mobile network it says gsm only, cdma only and gsm/cdma.
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Click to collapse
No.
And under mobile network, it actually says:
GSM/WCDMA (Auto mode)
GSM only
WCDMA only
WCDMA =/= CDMA.
Click me for info on WCDMA.
Long story short, WCDMA is 3g/"4g" (4g in quotes, because it's HSPA+, which isn't REALLY 4g) used for data on some GSM networks (AT&T mostly) in North America. Not the same as CDMA used for voice on some networks (Verizon, Sprint, Cricket) in North America.
Confusing, I know.
EDIT: FYI, this is a GSM phone; the only network in the US that you will get full use of all the capabilities of the I9100 is AT&T. You CAN use the phone on T-Mobile USA's network, but will only get Edge data speeds, as its hardware is not capable of receiving the necessary 3g/4g network frequencies for high speed data on their network.
I will be unlocking my I717 tonight, flashing blaze radio, and flashing JamieD's CM10.1 rom
Do the USSD codes word with AOSP Roms or do I need to run TouchWiz based roms? Especially *#2263# to force the phone into AWS HSPA+ mode?
rigmah said:
I will be unlocking my I717 tonight, flashing blaze radio, and flashing JamieD's CM10.1 rom
Do the USSD codes word with AOSP Roms or do I need to run TouchWiz based roms? Especially *#2263# to force the phone into AWS HSPA+ mode?
Click to expand...
Click to collapse
*#*#4636#*#* on aosp. Some codes are different on different android versions. Optionally setting/ wireless and network more/ mobile network/preferred network type.
OK great.
Ill be using the I717 on T-mobile and i want to make sure i can take full advantage of the AWS HSPA (1700mhz) or the 1900 mhz HSPA+ (I am in a refarmed market).
Though I hear that AWS HSPA is +42 and 1900mhz is only +21
rigmah said:
OK great.
Ill be using the I717 on T-mobile and i want to make sure i can take full advantage of the AWS HSPA (1700mhz) or the 1900 mhz HSPA+ (I am in a refarmed market).
Though I hear that AWS HSPA is +42 and 1900mhz is only +21
Click to expand...
Click to collapse
Using it on T-Mobile here as well. Seen as high as 16mbps download using the i717 blaze, i717 uvlg3, and also the official att uclf6 which would be on the 1900 band.
So try a few out and see which works best. Not sure but thought all bands were created equal, as per throughput. Maybe someone else can chime in.
Do i need to set it to WCDMA ONLY or Preferred?
zyzzz said:
Do i need to set it to WCDMA ONLY or Preferred?
Click to expand...
Click to collapse
Preferred will cycle between available edge and HSDPA frequencies.
Where wcdma only will provide HSDPA and no 2g.
So for me...preferred as any data is good data
Hi guys,
I have a strange problem, I guess.
I bought my HTC Desire 610 on amazon. It is AT&T.
I use it in a different country with GSM sim. Everything seems to work fine. I am connected to 4G network if I am in 4G coverage zone. But when I dont, it won't switch to 3G, it just goes offline.
long story short: 4G seems to work, but 3G don't.
network mode is set to WCDMA/LTE Auto.
could anyone help?
I think this is something to do with the Rom, if you were to install the cyanogen mod or the slimkat Rom, 3g works just fine in both, idk why though
MGfusion said:
I think this is something to do with the Rom, if you were to install the cyanogen mod or the slimkat Rom, 3g works just fine in both, idk why though
Click to expand...
Click to collapse
I Installed GSM signal monitoring application. As it turns out the phone only receives HSPA+ (3G) signal, but somehow thinks that it is 4G. Because 4G is displayed on top of screen. that is why I thought it was working on 4G network. but now I guess it works on 3G but thinks that it's 4G
now I want to enable 4G but have no idea how
Andy_99 said:
I Installed GSM signal monitoring application. As it turns out the phone only receives HSPA+ (3G) signal, but somehow thinks that it is 4G. Because 4G is displayed on top of screen. that is why I thought it was working on 4G network. but now I guess it works on 3G but thinks that it's 4G
now I want to enable 4G but have no idea how
Click to expand...
Click to collapse
Lol, had no idea. Well I have no clue on that one
Andy_99 said:
I Installed GSM signal monitoring application. As it turns out the phone only receives HSPA+ (3G) signal, but somehow thinks that it is 4G. Because 4G is displayed on top of screen. that is why I thought it was working on 4G network. but now I guess it works on 3G but thinks that it's 4G
now I want to enable 4G but have no idea how
Click to expand...
Click to collapse
Depending on what country you are in 4g probably won't work with an at&t phone as the different variants have different 4g bands unlocked in the radio firmware and probably antennas. See the following extract from desire 610 network specs. US 4g bands are quit different from those available in most regions.
NETWORK Technology
GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 - all versions
3G bands HSDPA 850 / 900 / 2100 - EU, EMEA
HSDPA 850 / 1900 / 2100 - AT&T
4G bands LTE band 3(1800), 7(2600), 8(900), 20(800) - EU, EMEA
LTE band 1(2100), 3(1800), 7(2600), 8(900), 28(700) - Asia
LTE band 2(1900), 4(1700/2100), 5(850), 17(700) - USA
Speed HSPA 42.2/5.76 Mbps, LTE
MiniBlu said:
Depending on what country you are in 4g probably won't work with an at&t phone as the different variants have different 4g bands unlocked in the radio firmware and probably antennas. See the following extract from desire 610 network specs. US 4g bands are quit different from those available in most regions.
NETWORK Technology
GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 - all versions
3G bands HSDPA 850 / 900 / 2100 - EU, EMEA
HSDPA 850 / 1900 / 2100 - AT&T
4G bands LTE band 3(1800), 7(2600), 8(900), 20(800) - EU, EMEA
LTE band 1(2100), 3(1800), 7(2600), 8(900), 28(700) - Asia
LTE band 2(1900), 4(1700/2100), 5(850), 17(700) - USA
Speed HSPA 42.2/5.76 Mbps, LTE
Click to expand...
Click to collapse
Yes. I guess you are right.
So there is no way to fix this?
Andy_99 said:
Yes. I guess you are right.
So there is no way to fix this?
Click to expand...
Click to collapse
Its hard to say for sure. Try a ROM from the region your in or cm11 which is for all regions. This probably won't work but is worth a try. Otherwise to that you would have to go s_off with sunshine (costs $25) and flash changes to radio firmware( either someone's dump from a phone in the region your in) or modifying it (google "XDA qcom unlock radio bands) but either way it's very risky unless you really know what you doing you can easily end up with an expensive brick and it still depends on whether you phone is equipped with a suitable anttena for the frequency the band your carrier is using.