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[Q] Abroad and stuck no data! HELP!

Hello,
So i've got this nicely unlocked, shiny, G2x. (Running MIUI right now, please don't judge me) Anyways, I'm in Morocco, and am trying to use Maroc Telecom (IAM) which has 3g data (their site even claims HSPA+) and these are the frequencys they use:
GSM 900 / GSM 1800 / UMTS 2100
And copy pasted from the T-Mobile website, the G2x uses:
Quad band GSM (850/900/1800/1900 MHz), Dual band UMTS (1700/2100 MHZ Bands 1 & 4)
To me that looks compatible. Trouble is, i'm getting no data whatsoever, not even 2g, in an area that I know should have at least 3g. I've signed up for the plan correctly, I'm sure of that. And my G2x automatically picked up the APN settings when I first turned it on (and I verified that they are correct) but still not a hint of internet access. This is driving me crazy!! any hints would be greatly appreciated.

Just guessing, but does it think you're roaming. Maybe try enabling data roaming to see if it recognizes the data then.

fiffer1 said:
Just guessing, but does it think you're roaming. Maybe try enabling data roaming to see if it recognizes the data then.
Click to expand...
Click to collapse
It wouldn't be roaming if he bought a sim for that system as he says. Probably APN has a typo or not selected. Have to push radio button so it has a green dot to enable the APN. If that doesn't work then contact carrier to reset data on the account. I have had to do that in the past here in Thailand. Have you also tried turning the phone off and on, or doing airplane mode. Sometimes that is needed once.

Thanks for the responses!
Unfortunately, i've tried and double tried all those things, except getting the carrier to reset the data plan. I'll do that next. Now I just have to get through a bunch of menus in French & Arabic

Are you running Market Enabler. It can screw you up royally if you change sim and it was set to fake at boot. I had that on a Nexus One and had to factory reset the phone to get data working again when I changed sim.

Thanks for the advice. I don't think i'm faking my sim - unless that's something that comes with CM07 and I just don't know about it. Also I tried it on stock before flashing with no different result, so i'm pretty sure that's not it. Went to the office of Maroc Telecom, who replaced my sim (but still no luck) and an INWI sim which i'd previously been able to get 2g coverage on now gives me nothing. It is the weirdest thing and I feel stuck. Has anyone actually gotten a g2x to work on any other network?? is there some sort of Tmobile lock which is preventing me because i'm not using a tmobile sim? (And i'm not talking about the phone being 'locked', obviously i've gotten it unlocked, and can make calls just fine, and did have that short spell of 2g data on INWI) Anyways, i'm about ready to throw this very expensive phone out the window, because what is a smartphone without data?? Thanks anyways for your advice.

same, problem.
How can I solve it?
Maybe try to use other broadband?

I use my G2X in Thailand on TOT3G with no problems. They run 3G on Band 1 (2100/1900). Figure out what band it is. There about fifteen different 3G bands in use. Most people don't realize it but 3G radios use two frequency spectrums at the same time. There is an uplink and downlink. For example 2100 Band 1 uses 2100Mhz downlink and a 1900Mhz uplink. Band 4 is 1700Mhz uplink and 2100Mhz downlink. So the 3G radio in the G2X also transmits on 1900Mhz. But the 1900 Band 2 uses 1800Mhz as an uplink, which the 3G radio in the G2X doesn't support. Most companies that say they are on 2100Mhz are referring to Band 1. If they are running Band 1 the G2X definitely supports it. If you have sim unlocked the phone there is nothing preventing you from getting 3G reception on any carrier in the world.
Download "Network" (https://market.android.com/details?id=de.mangelow.network&feature=search_result) from the Android Market and run it. Scroll down to where it says what type of connection you want and make sure "WCDMA preferred" is selected. If the phone somehow got set to "2G only" you will never get 3G reception until you change it. That happened to me once on a Nexus One and took me a while to figure it out.
CM7 and some other custom roms are known to be having connectivity issues. I suggest you flash back to stock and make sure your apn is correct. If your apn is wrong in any way, the connection will be refused by the cell system.

answer to problem with 3G
engadget[dot]com/2011/04/27/t-mobile-g2x-lacks-quadband-hspa-shatters-dreams/
So, I have working 2G, and 3G(only data, calls are not working)
Rom: WeaponG2x.

Have you tried hard reset (press and hold vol^ and power) till it restarts..
Sent from my LG-P999 using xda premium

MisfitX said:
Have you tried hard reset (press and hold vol^ and power) till it restarts..
Sent from my LG-P999 using xda premium
Click to expand...
Click to collapse
For the what?

Switching between UMTS and HSPA bug

An almost identical topic already exists in HTC One S section (Radio UMTS/HSPA switching bug (3g/4g)), but I was thinking that maybe there is a different possible fix for Blaze 4G.
I am currently on the AT&T network using Straight Talk SIM. On the status bar it displays 3G with enough bars, but from time to time it stops receiving data in the middle of the transaction. When it happens, the mobile network type is shown as UMTS under "About phone" -> "Status". When it switches back to HSPA, the data resumes. It really messes up my browsing a lot
When I was still on T-Mobile, it did not seem to happen, as the connection was either "4G" or E (mobile network types HSPA+ or EDGE, respectively). I never noticed UMTS in the phone status while using T-Mobile.
One of the reasons I chose Blaze 4G is because it supports both AWS and 1900 bands, so it can work on AT&T and T-Mobile networks. As we know, T-Mobile coverage is not great, so the connection often switched from "4G" to edge. Being on AT&T, the connection firmly stays on 3G, but now I have this annoying bug.
Your input and suggestions would be highly appreciated! By the way, I am using a stock ROM with root.

I have had the same issue with my GS3 as well as my S2 and Sensation, all on T-Mobile. It is something I've noticed. Another thing I noticed, that is shady on T-Mobile's end, is that they show "4G" even if it is on UMTS.

RevenG said:
I have had the same issue with my GS3 as well as my S2 and Sensation, all on T-Mobile. It is something I've noticed. Another thing I noticed, that is shady on T-Mobile's end, is that they show "4G" even if it is on UMTS.
Click to expand...
Click to collapse
Blaze only has 4g, E, and G, while on T-Mobile that's why it displays 4g while in umts, Umts is 3g and since there is no 3g icon it shows as 4g, hspa+ is "4g"
Sent from my SGH-T769 using xda premium

RevenG said:
I have had the same issue with my GS3 as well as my S2 and Sensation, all on T-Mobile. It is something I've noticed. Another thing I noticed, that is shady on T-Mobile's end, is that they show "4G" even if it is on UMTS.
Click to expand...
Click to collapse
Is that shady? UMTS Band IV (AWS) provides HSPA+ service. Looks like 1700MHz will be split 50/50 for GSM and H+ coverage, and teh 1900MHz will be split LTE/H+ by next year.
TMO said:
As part of its transition to deploy LTE on its 1700 MHz spectrum, T-Mobile will refarm its PCS spectrum to support both 2G GSM services and HSPA+ services. In a recent FCC filing, T-Mobile said by mid-2013, its expects half of its 1900 MHz spectrum to be devoted to GSM while the other half will run HSPA+ services, and that by then half of its AWS spectrum will support HSPA+ and the other half LTE.
Read more: T-Mobile to test HSPA+ in 1900 MHz for iPhone - FierceWireless http://www.fiercewireless.com/story/t-mobile-test-hspa-1900-mhz-iphone/2012-06-08#ixzz24wzhoLRc
Subscribe: http://www.fiercewireless.com/signup?sourceform=Viral-Tynt-FierceWireless-FierceWireless
Click to expand...
Click to collapse
http://www.fiercewireless.com/story/t-mobile-test-hspa-1900-mhz-iphone/2012-06-08
This chart also indicates that the AWS and PCS spectrums are both used for H+ communications. However, it is a tid bit simplified...
http://en.wikipedia.org/wiki/T-Mobile_USA#Radio_frequency_spectrum_chart
---------- Post added at 11:00 AM ---------- Previous post was at 10:53 AM ----------
Have you tried flashing the other radio? I'm not sure which radio you're using, or if the other one will perform better. However, it does seem like your problem is being caused by the radio.
E107946 said:
An almost identical topic already exists in HTC One S section (Radio UMTS/HSPA switching bug (3g/4g)), but I was thinking that maybe there is a different possible fix for Blaze 4G.
I am currently on the AT&T network using Straight Talk SIM. On the status bar it displays 3G with enough bars, but from time to time it stops receiving data in the middle of the transaction. When it happens, the mobile network type is shown as UMTS under "About phone" -> "Status". When it switches back to HSPA, the data resumes. It really messes up my browsing a lot
When I was still on T-Mobile, it did not seem to happen, as the connection was either "4G" or E (mobile network types HSPA+ or EDGE, respectively). I never noticed UMTS in the phone status while using T-Mobile.
One of the reasons I chose Blaze 4G is because it supports both AWS and 1900 bands, so it can work on AT&T and T-Mobile networks. As we know, T-Mobile coverage is not great, so the connection often switched from "4G" to edge. Being on AT&T, the connection firmly stays on 3G, but now I have this annoying bug.
Your input and suggestions would be highly appreciated! By the way, I am using a stock ROM with root.
Click to expand...
Click to collapse

snoopy1e11 said:
Blaze only has 4g, E, and G, while on T-Mobile that's why it displays 4g while in umts, Umts is 3g and since there is no 3g icon it shows as 4g, hspa+ is "4g"
Sent from my SGH-T769 using xda premium
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Click to collapse
Actually it does have a 3G icon smart guy

I never seen a 3g icon and I live in a 3g area. Smartguy
Sent from my SGH-T769 using xda premium

I have only seen 4g and e, but never 3g
Sent from my SGH-T769

I have been in a couple areas where it kept switching between 4g and 3g so don't assume there is no icon just because it has never been on your phone.

Screenshots or it didnt happen
Sent from my SGH-T769 using xda premium

If it happens again I will

For what it is worth, my unlocked Blaze 4G running on WIND Network in Canada (HSPA/HSPA+) only shows 3G icon and always says UMTS in Phone->Status, running UVLF4 radio.
myorks1127 said:
If it happens again I will
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Click to collapse

theshowman said:
For what it is worth, my unlocked Blaze 4G running on WIND Network in Canada (HSPA/HSPA+) only shows 3G icon and always says UMTS in Phone->Status, running UVLF4 radio.
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Click to collapse
Exactly so the phone is CAPABLE of showing 3G in the signal indication, mine is stock

theshowman said:
For what it is worth, my unlocked Blaze 4G running on WIND Network in Canada (HSPA/HSPA+) only shows 3G icon and always says UMTS in Phone->Status, running UVLF4 radio.
Click to expand...
Click to collapse
I did say "on T-Mobile" I have no doubts it'll show 3g on unlocked or another sim but as I say I live in a 3g area my phone shows umts with 4g icon
Sent from my SGH-T769 using xda premium

And here is the screenshot to prove, happened to me today at the gym. Stock everything as well.

Have you tried flashing the other radio? I'm not sure which radio you're using, or if the other one will perform better. However, it does seem like your problem is being caused by the radio.
Click to expand...
Click to collapse
I am using a stock radio because it supports both 1700 MHz and 1900 MHz bands (Tmo and AT&T) - that is why I bought this phone in the first place. I am not sure there are other radios around for my phone, and even if there are, I am not sure what benefit I would get from flashing a non-stock radio. Very few phones support bands for both GSM providers in the USA; usually, it is either Tmo or AT&T.
On a another note: I got a Tmo SIM card from Straight Talk, and now I do not have this UMTS switching bug. The coverage is a bit worse, but where I have HSPA+, it is still 2-3 times faster than what I got from AT&T HSPA network.

myorks1127 said:
And here is the screenshot to prove, happened to me today at the gym. Stock everything as well.
Click to expand...
Click to collapse
It is not surprising, as T-mobile is rolling out HSPA+ on 1900 MHz band. It will be happening more in the future as more areas will be re-farmed. Since there are only few T-mobile phones that can support 1900 MHz, other users will not see it happen. On the other hand, those few with iPhones on T-mobile network can finally see 3G.
What puzzles me is why it shows 3G instead of "4G" on 1900 MHz band right now? Do they need to upgrade this band to HSPA+ during re-farming?

myorks1127 said:
Actually it does have a 3G icon smart guy
Click to expand...
Click to collapse
Yep, it absolutely does on dark knight build 8.
Oh you guys are talking about ...stock..?
Yeah no 3g icon on stock as T-Mo views all 3g as 4g now. There's no 3g icon on ANY 4g T-Mo phone's stock rom (with a T-Mo sim card). It is how they claimed to have the 'largest 4g network' during that ad campaign. Funny how T-Mo no longer claims that (or is no longer allowed to claim that)....
Here where I live I only have 3g. I have verified this using speedtest where I have never had more than 1.7 down/ 400 up. In Minneapolis I know there's 4g service as I have had speeds as high as 11 down / 2 up and average 8 down 1.5 up. All 3 of those statements are confirmed using Dark Knight build 8 as I have a 3g icon here at home and a 4g icon when I am in Minneapolis. The whole drive to Minneapolis showed '4g' on my wife's Sensation 4G. No, I am completely positive there's no 3g icon in the stock rom for any newer T-Mo 4g phone. If there is a 3g icon on any 4g t-mo phone (using T-Mo service), by all means educate me.

There obviously is a 3G icon as in the screenshot i posted. This rarely happens in the specific area I am in a lot (Gym) but my phone is totally stock and always shows 4G everywhere else. Let the screenshot educate you...

myorks1127 said:
There obviously is a 3G icon as in the screenshot i posted. This rarely happens in the specific area I am in a lot (Gym) but my phone is totally stock and always shows 4G everywhere else. Let the screenshot educate you...
Click to expand...
Click to collapse
Are you using a T-Mo sim with T-Mo service?

Yes T-Mobile everything, everything stock never rooted yet. BTW I went to st.cloud state for my first year of college, small world

AT&T Atrix2 in Netherland

Hi,
Any AT&T Atrix2 users in the Netherland ?
I've just arrived last week and I couldn't get a stable data connections. I know it's not a network problem because my friends don't have any problem. So I'm wondering if for some reason it's my phone (radio incompatibility maybe).
Most of the time it just won't attached to the network, other time it attached to the network but data is not flowing.
SMS/Voice call are doing fine.

ari197 said:
Hi,
Any AT&T Atrix2 users in the Netherland ?
I've just arrived last week and I couldn't get a stable data connections. I know it's not a network problem because my friends don't have any problem. So I'm wondering if for some reason it's my phone (radio incompatibility maybe).
Most of the time it just won't attached to the network, other time it attached to the network but data is not flowing.
SMS/Voice call are doing fine.
Click to expand...
Click to collapse
Settings -> Wireless & networks -> Mobile networks -> Access point names.
What APNs are listed?
Edit - You may need to add a new APN from this list: http://wiki.apnchanger.org/Netherlands

Live Vodafone...
Anyway, don't think that the problem is with the app, cause from time to time, I could have connection (a very fast one I have to say), but most of the time, no traffic are coming through.
Sent from my MB865 using xda app-developers app

ari197 said:
Live Vodafone...
Anyway, don't think that the problem is with the app, cause from time to time, I could have connection (a very fast one I have to say), but most of the time, no traffic are coming through.
Sent from my MB865 using xda app-developers app
Click to expand...
Click to collapse
And you have tried your connection from the same locations as your friends, who are also using the same mobile operator?

I use a SIM unlocked AT&T Atrix 2 in the Netherlands with no problems. I'm on T-Mobile NL and live in Amsterdam.
I have had problems with my phone failing to connect to a data network when I travel outside of the Netherlands, though. It'll get itself into a state where it won't send or receive data even with the "data roaming" option selected. I've always been able to solve it by rebooting the phone, but that's a crappy solution. Does a power cycle fix it for you?

recently ive been all around(Ger,Aus,Slo,Cze,Hun) europe with data roaming on, and i had data(and phone ofc)just fine where i wanted it. im with vodafone.
unlocked att atrix2

I think it might have something to do with the radio. Force my phone to 2G and connection is very stable.
Might be related with me living in Maastricht which is quite close to the border.
Sent from my MB865 using xda app-developers app

afaik the att 3g bands dont cover all the european 3g gsm bands, its rare but you might be unlucky... you have to see specs of a2 and your providers bands.

souljaboy said:
afaik the att 3g bands dont cover all the european 3g gsm bands, its rare but you might be unlucky... you have to see specs of a2 and your providers bands.
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Click to collapse
yup .. that makes a lot sense .. that would explain the stability problem .. well, no biggie .. 2G serves me just fine ..

ari197 said:
yup .. that makes a lot sense .. that would explain the stability problem .. well, no biggie .. 2G serves me just fine ..
Click to expand...
Click to collapse
Some of European providers use 900MHz band for UMTS which not supported by A2.
So in areas without 2100MHz but with 900MHz UMTS our phone will not work in 3G .

What I find it strange is, when I'm on 3G, phone and sms work just fine. I got a full signal also. That's why I don't suspect radio problem.
Sent from my MB865 using xda app-developers app

ari197 said:
What I find it strange is, when I'm on 3G, phone and sms work just fine. I got a full signal also. That's why I don't suspect radio problem.
Sent from my MB865 using xda app-developers app
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Click to collapse
When you're on 3G, it SHOULD work fine.
If you meant "when you're not on 3G," then that is still normal. Different radio bands handle different tasks from your phone - SMSPhone being examples. You can still be "on network" and not have 3G data connectivity.
If you take a trip to a different city in the Netherlands and your 3G works fine, you'll know the problem is with the radio bands your carrier is using/not using in your home area. If your connection is still bad, then you have an issue with your phone itself.

^^
that is correct. its not so simple as "sms works so data should too"
in this century less and less people are sending sms and calling, compared to the growth of mobile data usage. but the number of bands on the avaliable frequencies didnt grow at all. so networks adapt to it, different bands are becoming data bands, and small unused bands are becoming phone bands, and so on..

Telstra turning off frequency 2100 in Aus - will my desireS still get 3g?!

ITS at work told me today that Telstra are switching off the 2100 network tomorrow (31 Aug) and that my phone might not get data connection afterwards - has anyone else heard about this and know if it is true or not?
I find all the frequencies plus 2g, 3g hsdpa, edge nextg stuff confusing...

I've not heard this before. I, too, am fairly ignorant when it comes to mobile networks.
90% plus of my data usage is over Wi-Fi, but I'd be very miffed if I had no data connection at work done I rely on my Exchange account staying synched.
Of course, all we have to do is wait and see what happens tomorrow.
Sent from my Desire S

BillGoss said:
I've not heard this before. I, too, am fairly ignorant when it comes to mobile networks.
90% plus of my data usage is over Wi-Fi, but I'd be very miffed if I had no data connection at work done I rely on my Exchange account staying synched.
Of course, all we have to do is wait and see what happens tomorrow.
Sent from my Desire S
Click to expand...
Click to collapse
Yep, cross fingers and let's see. Reading a bit about it on whirlpool and it may be that we drop from HSDPA on 21,000 to the slower Edge on 850, hope not!
EDIT - the little signal indicator in the notification bar has changed from 'H' to 'E' for me over lunchtime... wonder if thats it. Browsing does seem a fair bit slower

E stands for Edge (2 /2.5 G) ...
Whereas., H stands for HSPDA (3/3.5G).
Try selecting WDCMA only in your Settings > Mobile Network Settings >Mobile Network mode.
This should give you only a 3G signal., if available. . Or else no network at all!
You can try switching back to GSM /WDCMA auto and be able to see the network back again.. In this mode it will select the best available option.
Sent from my HTC Desire S

Thanks for the tip. If I set my phone to WCDMA Only, I get no connection., So I've left out I WCDMA Preferred.
By the way, I don't have those setting options, but I can get there by entering *#*#4636#*#* in the phone disaster and selecting Phone Information.
Sent from my Nexus 7

Weird, I use the same shortcut to get to that menu and tried wcdma only, my data signal indicator is now 3g (sometimes H).
No idea what frequency it is using but I'm getting data and presumably it must be better than E, edge. I'm in metro Melbourne btw
Sent from my Desire S using xda premium

BillGoss said:
Thanks for the tip. If I set my phone to WCDMA Only, I get no connection., So I've left out I WCDMA Preferred.
By the way, I don't have those setting options, but I can get there by entering *#*#4636#*#* in the phone disaster and selecting Phone Information.
Sent from my Nexus 7
Click to expand...
Click to collapse
On CM10 (and I know you are running that ) you have a toggle called 2g/3g and in the settings you can change the network modes.
I have set them to 2g/3g only, because normally I'm in a WI-FI area and there 3g is useless.
Sent from my Desire S using xda app-developers app
Edit the screenshot wasn't working

I guess, the 2G/3G toggle option is the same as GSM only or WCDMA only option.
Edit : Ok, the pic in the above post just loaded... It's the same way of doing things, a bit differently though !
---------- Post added at 01:23 AM ---------- Previous post was at 01:17 AM ----------
sadsac said:
Weird, I use the same shortcut to get to that menu and tried wcdma only, my data signal indicator is now 3g (sometimes H).
No idea what frequency it is using but I'm getting data and presumably it must be better than E, edge. I'm in metro Melbourne btw
Sent from my Desire S using xda premium
Click to expand...
Click to collapse
Of course, H is a lot better than E...
In fact, H is (just) better than 3G as well.
And as far as you are getting H/3G, leave the frequency to the network Radio Engineers to handle
Sent from my Desire S.

[Q] How to get 3G/4G with unlocked Blaze on AT&T

I bought one of these phones, rooted it, unlocked it, and installed CM9. I love the phone and OS, but I cannot get the 3G/4G to work on AT&T. Any ideas?

Yeah. The data network is incompatible. Different frequency.
Sent from my SGH-T769 using xda premium

Yeah I think all you can get is 2G (edge) on AT&T with the blaze.

I can say from first hand experience that the blaze works great with AT&T's 3g service. I bought this phone last week, unlocked it, and swapped in the sim from my old Aria and have been using it with CM10 ever since. Data speeds are around 3 to 6 Mb/s down and 1 Mb/s up, and voice and text messaging works fine.
For a more technical answer, AT&T uses the 850 mhz and 1900 mhz frequencies for UMTS (3g), and T-mobile uses 1700 mhz and 2100 mhz frequencies. The blaze supports UMTS on all of these frequencies so there are no technical roadblocks to using this phone with AT&T. http://www.phonearena.com/phones/Samsung-Galaxy-S-Blaze-4G_id6824
As for your problem of not getting 3g working, I had similar issues when first switching the sim card (especially on the stock rom). Check that your APN matches the one your old phone was using. On the stock rom, the phone did not auto detect the correct APN and this caused the 3g to not work. CM10 detected the correct APN right away though. Also, try turning data off and on or even rebooting the phone once you've checked your network settings.

I sold my other phone and no longer have it. Please confirm your APN settings, and how do I change them?

The blaze has all the frequencies necessary for it to do HSPA (3G/4G) on AT&T's networks.
You'll likely want to change the APN. On CM9/10, go to Settings -> Wireless & Networks + More... -> Mobile Network Settings -> Access Point Names.

I was careful in selecting this specific phone because of its compatibility with AT&T HSPA bands. I have tried the suggested tweaks to the APN settings within both CM9 and CM10, but I still get no visual notification that the phone is operating in 3G or 4G mode. The areas in which I have used the phone consistently provided 3G and/or 4G coverage consistently with my prior BlackBerry 9860.
Any additional tips/tricks would certainly be appreciated. I know this phone is capable of so much more than it's providing me at this point.

nellans57 said:
I was careful in selecting this specific phone because of its compatibility with AT&T HSPA bands. I have tried the suggested tweaks to the APN settings within both CM9 and CM10, but I still get no visual notification that the phone is operating in 3G or 4G mode. The areas in which I have used the phone consistently provided 3G and/or 4G coverage consistently with my prior BlackBerry 9860.
Any additional tips/tricks would certainly be appreciated. I know this phone is capable of so much more than it's providing me at this point.
Click to expand...
Click to collapse
have you tried running a speed test to see if maybe it's just that the icon isn't coming up?

That is why it was called the "Merger Proof Phone"