United States
HSDPA
LTE
50%

AT&T APN settings for Nokia Lumia 638

, Updated:       AT&T   Nokia Lumia 638   Windows

Nokia Lumia 638 is compatible with AT&T HSDPA and AT&T LTE 50%.

To configure AT&T APN settings with Nokia Lumia 638 follow below steps.

AT&T Internet & MMS APN settings

Go to App list, tap Settings Cellular + SIM

If your phone supports more than 1 SIM card, choose SIM 1 settings or SIM 2 settings depending on the SIM that you want to use for AT&T 2.
Turn on Data Connection.

Enable Use cellular data in For limited Wi-Fi connectivity
If you have more than 1 SIM card choose the SIM card for data connection in SIM for data connection
Enable 3G connection for faster data transfer speeds. Also enable Highest connection speed

Internet Configuration Settings:

In Cellular + SIM Settings, select SIM settings Add Internet APN
If you have a dual SIM phone select the SIM card.

Change the below settings

APN: phone
User name:
Password:
Authentication type:
Proxy server (URL):
Proxy port:
IP type: IPv4

Tap Save


MMS Configuration Settings:

In Cellular + SIM Settings, select SIM settings Add MMS APN

If you have a dual SIM phone select the SIM card.

Change the below settings

APN: phone
User name:
Password:
Authentication type:
WAP gateway (URL): proxy.mobile.att.net
WAP gateway port: 80
MMSC (URL): http://mmsc.mobile.att.net/
MMSC port:
Maximum MMS size: 1024
IP Type: IPv4

Tap Save.


If the above AT&T Internet & MMS APN settings do not work on your Lumia 638, make below changes to AT&T Internet & MMS APN settings to get Cingular 380 ATT on your Nokia Lumia 638.

APNproxy
MMSC (URL)http//mmsc.cingular.com/
MMS APN: WAP gateway (URL)wireless.cingular.com
MMS APN: WAP gateway portblank
APN protocolIPv4

If the above AT&T Internet & MMS APN settings too do not work on your Lumia 638, make below changes to AT&T Internet & MMS APN settings to get ATT Phone on your Nokia Lumia 638.

MMSC (URL)http//mmsc.mobile.att.net
APN protocolIPv4

If the above AT&T Internet & MMS APN settings too do not work on your Lumia 638, make below changes to AT&T Internet & MMS APN settings to get ATT WAP on your Nokia Lumia 638.

APNwap.cingular
MMSC (URL)http//mmsc.cingular.com/
MMS APN: WAP gateway (URL)wireless.cingular.com
MMS APN: WAP gateway portblank
APN protocolIPv4

If the above AT&T Internet & MMS APN settings too do not work on your Lumia 638, make below changes to AT&T Internet & MMS APN settings to get For unlocked non AT&T devices on your Nokia Lumia 638.

APNNXTGENPHONE
MMSC (URL)http//mmsc.mobile.att.net

If the above AT&T Internet & MMS APN settings too do not work on your Lumia 638, make below changes to AT&T Internet & MMS APN settings to get Net 10 ATT 4G LTE on your Nokia Lumia 638.

APNtfdata
MMSC (URL)http//mmsc.mobile.att.net
Authentication typePAP

If the above AT&T Internet & MMS APN settings too do not work on your Lumia 638, make below changes to AT&T Internet & MMS APN settings to get Net 10 via AT&T on your Nokia Lumia 638.

APNRESELLER
MMSC (URL)http//mmsc.mobile.att.net
APN protocolIPv4

If the above AT&T Internet & MMS APN settings too do not work on your Lumia 638, make below changes to AT&T Internet & MMS APN settings to get Net 10 via AT&T Tracfone on your Nokia Lumia 638.

APNtftdata
MMSC (URL)http//mmsc.mobile.att.net
Authentication typePAP
APN protocolIPv4

Straight Talk for AT&T APN Settings

Go to App list, tap Settings Cellular + SIM

If your phone supports more than 1 SIM card, choose SIM 1 settings or SIM 2 settings depending on the SIM that you want to use for AT&T 2.
Turn on Data Connection.

Enable Use cellular data in For limited Wi-Fi connectivity
If you have more than 1 SIM card choose the SIM card for data connection in SIM for data connection
Enable 3G connection for faster data transfer speeds. Also enable Highest connection speed

Internet Configuration Settings:

In Cellular + SIM Settings, select SIM settings Add Internet APN
If you have a dual SIM phone select the SIM card.

Change the below settings

APN: tfdata
User name:
Password:
Authentication type:
Proxy server (URL):
Proxy port:
IP type: IPv4

Tap Save


MMS Configuration Settings:

In Cellular + SIM Settings, select SIM settings Add MMS APN

If you have a dual SIM phone select the SIM card.

Change the below settings

APN: tfdata
User name:
Password:
Authentication type:
WAP gateway (URL): mms3.tracfone.com
WAP gateway port: 80
MMSC (URL): http://mms-tf.net
MMSC port:
Maximum MMS size: 1024
IP Type: IPv4

Tap Save.


For Nokia Lumia 638, when you type AT&T APN settings, make sure you enter APN settings in correct case. For example, if you are entering AT&T Internet & MMS APN settings make sure you enter APN as phone and not as PHONE or Phone. If entering Straight Talk for AT&T APN Settings above to your Nokia Lumia 638, APN should be entered as tfdata and not as TFDATA or Tfdata.

Nokia Lumia 638 compatibility with AT&T

Nokia Lumia 638 is compatible with below network frequencies of AT&T. Lumia 638 has variants RM-1010.

3G
HSDPARM-1010850 MHz, 1900 MHz
4G
LTEBand 40 2300 MHz*
*These frequencies of AT&T may not have countrywide coverage for Nokia Lumia 638.

Explain Nokia Lumia 638 compatibility with AT&T

Nokia Lumia 638 has modal variants RM-1010 and .

AT&T 3G APN with Nokia Lumia 638

RM-1010

Nokia Lumia 638 RM-1010 supports AT&T 3G on HSDPA 850 MHz and 1900 MHz.

AT&T 4G LTE APN with Nokia Lumia 638

Nokia Lumia 638 supports AT&T 4G on LTE Band 40 2300 MHz only in some areas of United States.

Overall compatibililty of Nokia Lumia 638 with AT&T is 67%. The compatibility of Nokia Lumia 638 with AT&T, or the AT&T network support on Nokia Lumia 638 we have explained here is only a technical specification match between Nokia Lumia 638 and AT&T network. Even Nokia Lumia 638 is listed as compatible here, AT&T network can still disallow (sometimes) Nokia Lumia 638 in their network using IMEI ranges. Therefore, this only explains if AT&T allows Nokia Lumia 638 in their network, whether Nokia Lumia 638 will work properly or not, in which bands Nokia Lumia 638 will work on AT&T and the network performance between AT&T and Nokia Lumia 638. To check if Nokia Lumia 638 is really allowed in AT&T network please contact AT&T support. Do not use this website to decide to buy Nokia Lumia 638 to use on AT&T.

Nokia Lumia 638 network specifications

OS Microsoft Windows Phone 8.1
Network bands GSM / HSPA / LTE
Speed HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Network frequencies GSM 850 / 900 / 1800 / 1900
HSDPA 850 / 900 / 1900 / 2100 - RM-1010
LTE band 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500)
See full specs at GSM.COOL... Select a different device... Select a different network...
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