[Q] China MTK6577 Phone AT&T settings - Android Q&A, Help & Troubleshooting

I picked up a China Clone S3 running the dual core MTK6577. It works quite well and I am satisfied with the build, but I can't get it to lock on to my AT&T 3G signal. It grabs the 2G Edge signal just fine but not the 3G.
Anyone have the APN settings for AT&T to get the 3G to work?
Thanks in advance.
Rahjer

Did you make sure the phone used the same bands ATT does? I bet you issue is the hardware is not made to use that band. If that is the case them edge is the best you will get
Sent from Arkham

Related

[Q] No 3G network on HD2 using 2.2 Froyo Cyanogen mod 6

Hello,
I recently bought a HTC HD2 and gotten unlocked to work with my ATT sim card also I had someone install the 2.2 Froyo Android software using Cyanogen Mod 6. Since I had the phone I have only been using Edge network and I know for sure we have 3g coverage. How can I get my 3G network to work on my phone? Please help. I am a newb when it comes to cell phones.
Thanks
Matt
someone correct me if i am wrong but the 3g bands for att and t-mo are different so even if you have 3g coverage you would only get edge. For faster speeds youll have to use wifi.
Do you have a Telstra-branded HD2? IIRC, Telstra uses the same 3G bands as AT&T. In that case you should be able to get 3G. Otherwise, the unbranded & T-Mo branded HD2s wouldn't work with AT&T 3G.
Sent from my T-Mobile myTouch 3G Slide using XDA App
jaekidd1012 said:
Do you have a Telstra-branded HD2? IIRC, Telstra uses the same 3G bands as AT&T. In that case you should be able to get 3G. Otherwise, the unbranded & T-Mo branded HD2s wouldn't work with AT&T 3G.
Sent from my T-Mobile myTouch 3G Slide using XDA App
Click to expand...
Click to collapse
I don't know how to check that but this HD2 used by a previous ower having Tmobile. Still having the same problem. Any help is appreciated.
thanks
Thread moved in HD2 Android Development.
but this isn't hd2 android section
No 3G on the TMOus HD2 on ATT
mattp_65 said:
I don't know how to check that but this HD2 used by a previous ower having Tmobile. Still having the same problem. Any help is appreciated.
thanks
Click to expand...
Click to collapse
Unless you have the Telstra HD2 (there will be a T in an oval on the back bottom cover), you won't get 3G on ATT. The Telstra model is the only one with the ATT 3G band (the 850mhz UMTS band).
You will ALSO need to have 850mhz ATT coverage in the areas where you live and travel to get 3G on that model.
Hope this helps...
Hi!
I was wondering if there is a way to change that? Installing a new ROM, a software or something!! I bought the TMo HD2 and brought it to South America. Here we use the 850 MHz frequency for 3G, and I just found out the HD2 works with 3G networks in the 1700 and 2100 MHz frequencies =( Is there a way I can change that ???
technillion said:
Unless you have the Telstra HD2 (there will be a T in an oval on the back bottom cover), you won't get 3G on ATT. The Telstra model is the only one with the ATT 3G band (the 850mhz UMTS band).
You will ALSO need to have 850mhz ATT coverage in the areas where you live and travel to get 3G on that model.
Hope this helps...
Click to expand...
Click to collapse
I checked and there is no T on my phone or cover. But I have cyanogen Mod 6, I was wondering if anyone else has this problem.
thanks

Galaxy S2 from "3" on AT&T

Hey guys, looking to see if anyone can shed some light on this for me.
I m looking to get a SGS2 that was originally from the "3" network from the UK, will this work on at&t for 3g?
Thanks
google what bands 3 uses for 3g. 850/1900 are what you're looking for.
3, along with all UK networks, use the 2100MHz band for 3G/UMTS. However, the phone itself does apparently support 850/900/1900/2100MHz, so unless 3 have crippled it for whatever reason, you should be fine.

[Q] Korean version GII 250S for AT&T

Hi guys.
I didn't know where to post and I have few questions on my Galaxy SII I bought from Korea and brought to USA.
I have KT's 250S galaxy SII and I'm trying to use it for At&t. I tried to put my At&t sim card in and looks like it is getting some connection. I was able to make a call.
However, looks like it's not getting any 3G connections. I heard there is some modification on the network I need to change to get 3G. Could you please let me know what should I do?
Thank you,
Andy
yubbi84 said:
Hi guys.
I didn't know where to post and I have few questions on my Galaxy SII I bought from Korea and brought to USA.
I have KT's 250S galaxy SII and I'm trying to use it for At&t. I tried to put my At&t sim card in and looks like it is getting some connection. I was able to make a call.
However, looks like it's not getting any 3G connections. I heard there is some modification on the network I need to change to get 3G. Could you please let me know what should I do?
Thank you,
Andy
Click to expand...
Click to collapse
Go to the miui thread in development section and use the apn from there. That should theoretically fix your issue...
Sent from my SGH-I777 using xda premium
yubbi84 said:
Hi guys.
I didn't know where to post and I have few questions on my Galaxy SII I bought from Korea and brought to USA.
I have KT's 250S galaxy SII and I'm trying to use it for At&t. I tried to put my At&t sim card in and looks like it is getting some connection. I was able to make a call.
However, looks like it's not getting any 3G connections. I heard there is some modification on the network I need to change to get 3G. Could you please let me know what should I do?
Thank you,
Andy
Click to expand...
Click to collapse
There is nothing you can do.
http://forum.xda-developers.com/archive/index.php/t-1052222.html
From the third post down:
Code:
<< Korea Galaxy S2 Network support >>
Double band UMTS 900/2100
Triple band GSM 900/1800/1900
<< EU Galaxy S2 band Network support>>
Quad band GSM 850/900/1800/1900
Quad band UMTS 850/900/1900/2100
AT&T and International (I9100) GSIIs support the same bands, which is why I9100s work perfectly in the US. Your device is completely missing support for the 850 MHz band (first device I've seen in years that wasn't quadband GSM other than dumbphones) and also missing support for 3G in the 1800 MHz band.
So you will not have 3G coverage anywhere, and you will completely lose coverage where AT&T uses the 850 MHz band.

International S3 on T-mobile giving only EDGE

I have a I9300 S3 international version. I recently Shifted to the US and am not able to get 3G connectivity. I can see only EDGE network. I know its got something to do with frequencies, because I have the APN etc correctly set up. My only question is will it ever work on 3G on T-Mobile? Is it fixable by flashing any modem?
P.S. I'm using Cyanogenmod 4.4.4.

[Q] Samsung Galaxy S3 AT&T SGH-i747 3G not working in India

Hi,
Recently I happen to move to India from USA. I had Samsung Galaxy S3 - SGH i747 purchased in in US, which was under 2 year contract. I tried to call AT&T guys to give me unlock code but they didn't give me since my contract was not over.
I moved to India and tried to unlock my phone from local shop. I am able to make/receive calls now having these issues.
1. 3G is not working . When I see different available bands in my phone using *#2263#, it shows WCDMA 850, 900, 1700, 1900 and WCDMS IMT2000 under WCDMA band preferences. I am using Vodafone in India which runs on UMTS 2100. I visited Vodafone store couple of times but they are not able to help me. How do I get 2100 frequency in my phone ?
2. Currently I have set preference to run my phone on GSM Band so 2G is working. There are certain areas in my city where Vodafone 2G is also not working. In those areas, I don't receive any call even though I have very good network coverage. I tried switching off my mobile network in case I can receive calls but its of no help.
Request for your to resolve this. I am fed up with this nice working phone and need to purchase new one if these issues don't get resolved.
Thanks

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