Lumia 625 purchased in India doesn't support AT&T SIM connection in the States, why?

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Lumia 625 purchased in India doesn't support AT&T SIM connection in the States

Hi,

I purchased a Nokia Lumia 625 in India. The details are as below:

Name: Windows Phone
Model: Nokia Lumia 625
Software: Windows Phone 8.1 Update

OS Version: 8.10.14234.375
Firmware Revision Number: 3058.50000.1424.0004
Hardware Revision Number: 3.0.0.0
Radio software version: 3.2.28072.7
Chip SOC version: 8930
Screen Resolution: 480x800

I am taking an AT&T connection in the States, but unfortunately it is NOT supported by the phone. But the AT&T SIM Card DOES work in another MotoG phone.

Quick support appreciated. Would be glad to provide more info if required.

Regards,
Satya
 

Skulls138

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Re: Lumia 625 purchased in India doesn't support AT&T SIM connection in the States

If the phone doesn't support the AT&T bands, I really don't believe there is anything you can do..
 

RumoredNow

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Re: Lumia 625 purchased in India doesn't support AT&T SIM connection in the States

Would be glad to provide more info if required.


In Settings > Extras & Info what does it say for "Manufacturer Name" and for "Mobile Operator?"


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SatyaS

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Re: Lumia 625 purchased in India doesn't support AT&T SIM connection in the States

@ RumoredNow - Manufacturer Name - RM-941_im_india_204
Mobile Operator - 000-IN

Please let me know if it helps.
 
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SatyaS

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Re: Lumia 625 purchased in India doesn't support AT&T SIM connection in the States

@ Skulls138 - Do you intend to recommend user to switch from Windows to another in such case?
 

TechFreak1

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Re: Lumia 625 purchased in India doesn't support AT&T SIM connection in the States

The band listings for the Indian Variant of the 625 are:


  • GSM network: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz
  • GSM max data speed DL: EGPRS 236.8 kbps
  • GSM max data speed UL: EGPRS 236.8 kbps
  • WCDMA network: Band 1 (2100 MHz), Band 5 (850 MHz), Band 8 (900 MHz)
  • WCDMA max data speed DL: 42.2 Mbps (Cat 24)
  • WCDMA max data speed UL: 5.76 Mbps (Cat 6)
  • LTE FDD network: Band 3 (1800 MHz), Band 7 (2600 MHz), Band 20 (800MHz)

The band listings for the US (635):


  • GSM network: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz
  • GSM max data speed DL: EGPRS 296.0 kbps
  • GSM max data speed UL: EGPRS 236.8 kbps
  • WCDMA network[SUP]5[/SUP]: Band 5 (850 MHz), Band 1 (2100 MHz), Band 2 (1900 MHz), Band 4 (1700/2100 MHz)
  • WCDMA max data speed DL: 42.2 Mbps (Cat 24)
  • WCDMA max data speed UL: 5.76 Mbps (Cat 6)
  • LTE FDD network[SUP]3[/SUP]: Band 5 (850MHz), Band 17 (700MHz), Band 2 (1900 MHz), Band 7 (2600 MHz), Band 4 (1700/2100 MHz)
  • LTE max data speed DL: 100 Mbps (Cat 3)
  • LTE max data speed UL: 50 Mbps (Cat 3)
  • CDMA network bands[SUP]4[/SUP]: BC0 (850 MHz), BC1 (1900 MHz), BC10 (800 MHz)


So when you say not supported by the phone can you please elaborate?
 

RumoredNow

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Re: Lumia 625 purchased in India doesn't support AT&T SIM connection in the States

@ RumoredNow - Manufacturer Name - RM-941_im_india_204
Mobile Operator - 000-IN

Please let me know if it helps.

So TechFreak1 beat me to it... Your 625 is incompatible with AT&T for anything other than 2G. The MotoG probably has a broader radio including more bands for world travel... At the time of the 625's manufacture Nokia was really focused on region specific radios and pumping out a lot of variants based on this.

If you are going to be in the US long and want a Windows Phone to run on AT&T, you could go to Best Buy or Walmart and get a GoPhone Lumia 640 for only $30 USD.

I have one here, I'm in Field Test looking at it.
GSM quad band which is the world standard
3G Bands 1 (2100) / 2 (1900) / 4 (US 1700) / 5 (US 850)
LTE Bands 2 / 4 / 5 / 7 / 17 / 28

In India, Band 1 (2100) is most common and I think that the 640 would work fine for you back home for 3G/H+ (I'm making the assumption you are visiting the US). The LTE is incompatible at this time for India, but I believe they will be rolling out the common Western standards of FDD Bands like 2 and 4 and moving away from Far East style TDD Band 40...

It might be worth investing the $30, but remove the GoPhone SIM before powering on the phone and get it unlocked from AT&T via their web portal before using it. Unlocks come really quickly... In about 2 days or less for most cases.

https://forums.windowscentral.com/e...tt.com%2Fdeviceunlock%2F%23%2F&token=V3Cp_N0-

You do not have to be an ATT customer to get this unlock. See this thread: http://forums.windowscentral.com/t/332109-how-unlock-t-windows-phone-non-contract-edition.html
 

Skulls138

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Re: Lumia 625 purchased in India doesn't support AT&T SIM connection in the States

@ Skulls138 - Do you intend to recommend user to switch from Windows to another in such case?

I wouldn't switch OS's because of a phone not working in another country, no. That's just how some models are, even after unlocking. It's the phone band's itself, not the OS it runs.
 

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