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[Q] 3G/GPRS/EDGE not working on AT&T Galaxy S3 SGH-I747

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ibulp

Member
Dec 17, 2012
30
0
Dallas, TX
Hello Everyone
I looked in the forums didn't find the solution so i wanted to ask my question here and I hope someone will come with help
my problem is I have a Samsung Galaxy S3 from AT&T .. I pay for unlimited 3G data but I'm not getting it .. I asked the AT&T dealer they told me it might be only reads LTE 4G data thats why .. but i think there's something AT&T to make money from costumers anyway .. How can I make my samsung galaxy s3 connect me through 3G, GPRS or EDGE .. and Thanks for helping me :)
 

shortydoggg

Senior Member
Apr 11, 2011
856
329
If you are looking to control whether to use 2g, 4g, or 4glte:

http://forum.xda-developers.com/showthread.php?t=2116346

You need to remove the restriction with the *#197328640# number and submenus,

then change the radio under the *#2263# number and its submenus.

Sent from my SAMSUNG-SGH-I747 using xda premium
SERVICE MENU:

dial:
*#197328640#

Enter code to remove Restriction: 11865

then dial *#2263#
and you should be able to change the signal from there.
 

pwco

New member
Oct 13, 2014
2
0
Hi,
I bought a phone in the US thinking its samsung s3 i9300 but discovered its s3 i747. I'm using the phone in Kenya but it cannot connect to WCDMA, only connects to GSM mode so internet access is very slow!! Any help??
 

pwco

New member
Oct 13, 2014
2
0
Your carrier probably does not use the same frequencies supported by the phone.

Sent from my SAMSUNG-SGH-I747 using Tapatalk

Hi,
I'm using the phonebfor voice calls and texts. I've also checked the frequencies and my carrier uses 2100 for 3g which the phone supports!! The phone status says modified and displays model as i9300 but download mode displays model as i747.
Any further advice??
 

DocHoliday77

Senior Member
May 10, 2011
9,407
6,892
HuntsVegas!!!
Oh boy....another Franken-Phone! These things are getting too common. Wish I knew where they were coming from....

Install Terminal Emulator from the store. Open and enter this:

getprop ro.bootloader

Tell me what this returns. Also, what is your current baseband?

Sent from my SAMSUNG-SGH-I747 using Tapatalk
 

bigbwoy

New member
Dec 7, 2014
3
0
Hi, i got the same problem as the other folk.

Oh boy....another Franken-Phone! These things are getting too common. Wish I knew where they were coming from....

Install Terminal Emulator from the store. Open and enter this:

getprop ro.bootloader

Tell me what this returns. Also, what is your current baseband?

Sent from my SAMSUNG-SGH-I747 using Tapatalk

I bought samsung galaxy s3 sgh-i747m from canada now im in Tanzania, it only support GSM (2g) network cant go for 3g even though on the network mode option i chose LTE/WCDMA/GSM if i change to another mode it wont support. I have tried to upgrade it from ver. 4.3 to 4.4.2 but still the same problem. Any help please...:(:(:(:(:(:(
 

audit13

Inactive Recognized Contributor
Jun 4, 2012
12,914
5,049
Toronto
I bought samsung galaxy s3 sgh-i747m from canada now im in Tanzania, it only support GSM (2g) network cant go for 3g even though on the network mode option i chose LTE/WCDMA/GSM if i change to another mode it wont support. I have tried to upgrade it from ver. 4.3 to 4.4.2 but still the same problem. Any help please...:(:(:(:(:(:(

These are the frequencies for the sgh-i747/m: 2G - GSM 850 / 900 / 1800 / 1900, 3G - HSDPA 850 / 1900 / 2100, and 4G - LTE 700 MHz Class 17 / 2100

Does your cell carrier support the 3G frequencies?
 
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kachmul2004

Senior Member
Jul 29, 2012
292
37
both the i747 and i747m support 3G in africa. I also came across the "refurbished" ones that have a i9300 sticker at the back but in reality are i747 and i747m.

They are both fixable issues (working on 2G only). Needs flashing and then repair.

Contact me by pm if interested
 

baptenda

Member
Dec 18, 2012
28
4
Kigali
Same problem here

I ran into the same problem!! What's the fix? I opened the phone to see the model number on the motherboard. It is Sghi747. But the sticker under the battery shows I have GT-I9300.

I am not able to connect to 3G. Only 2G.
 

baptenda

Member
Dec 18, 2012
28
4
Kigali
Your suggestion did work. I appreciate your quick replies and kindness. Be blessed. You saved my Samsung Galaxy S3. It now shows 4G icon :), typical of At&t S3 variant. I am enjoying the high speed Internet. Thanks again.

Sent from my SGH-I337M using XDA Free mobile app
 

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  • 2
    both the i747 and i747m support 3G in africa. I also came across the "refurbished" ones that have a i9300 sticker at the back but in reality are i747 and i747m.

    They are both fixable issues (working on 2G only). Needs flashing and then repair.

    Contact me by pm if interested
    1
    I bought samsung galaxy s3 sgh-i747m from canada now im in Tanzania, it only support GSM (2g) network cant go for 3g even though on the network mode option i chose LTE/WCDMA/GSM if i change to another mode it wont support. I have tried to upgrade it from ver. 4.3 to 4.4.2 but still the same problem. Any help please...:(:(:(:(:(:(

    These are the frequencies for the sgh-i747/m: 2G - GSM 850 / 900 / 1800 / 1900, 3G - HSDPA 850 / 1900 / 2100, and 4G - LTE 700 MHz Class 17 / 2100

    Does your cell carrier support the 3G frequencies?
    1
    For 3g, it doesn't look like the i747m supports the right frequencies.
    1
    Looks like 3g is not supported because the s3 does 850/1900/2100 and you need 900/2100. The s3 is missing the 900.

    The international s3 (gt-i9300) looks like it will give you 3g: http://www.gsmarena.com/samsung_i9300_galaxy_s_iii-4238.php
    1
    I ran into the same problem!! What's the fix? I opened the phone to see the model number on the motherboard. It is Sghi747. But the sticker under the battery shows I have GT-I9300.

    I am not able to connect to 3G. Only 2G.

    Find someone who fixes phones locally, and ask them to repair NVM. And also to flash it with the correct flash file