Rogers, AT&T, T-Mobile APN Settings for 3G/H Internet

APN Backup & Restore with Rogers XML APN: http://adf.ly/7tNSh
(Unzip to the root of your SD card. Install APN Restore, restore.)

Access Point Node worldwide database: http://www.osimood.com/2012/05/news-apn-database/

H = HSPA = 3.5G > 3G
http://en.wikipedia.org/wiki/High_Speed_Packet_Access

NOTE:
Flashing an "i" firmware onto an "a" phone will NOT give you "i" (e.g. UK, HK, T-Mobile USA) 3G
support on your "a" phone.
Vice versa: Flashing an "a" firmware onto your "i" phone will NOT give you "a" 3G support (e.g. AT&T USA, Rogers Canada) on your "i" phone.
All firmwares after v2.x contain BOTH SOFTWARE portions for "a" and "i" radios. Therefore, you can flash ANY v2.x firmware onto ANY phone and have 3G support in your zone. This is useful if you want HK customizations on a North American phone or UK customizations on an HK phone.
However, the HARDWARE radios are FIXED. You cannot add 3G support for another zone.
Check beneath your battery for your phone's version ("a" or "i"), if you don't know.

"a" phone:
"i" firmware in an "i" zone = No 3G.
"i" firmware in an "a" zone = 3G.
"a" firmware in an "i" zone = No 3G.
"a" firmware in an "a" zone = 3G.

"i" phone:
"i" firmware in an "i" zone = 3G.
"i" firmware in an "a" zone = No 3G.
"a" firmware in an "i" zone = 3G.
"a" firmware in an "a" zone = No 3G.

Manually entering your APN settings:
Settings / Wireless & Networks / Mobile networks / Access Point Names

Rogers APN (3G) Settings:
Name: Rogers Internet
APN: rogers-core-appl1.apn
Proxy: Not Set
Port: Not Set
Username: Not Set
Password: Not Set
Server: Not Set
MMSC: http ://mms.gprs.rogers.com
MMS proxy: 10.128.1.69
MMS port: 80
MCC: 302
MNC: 720
APN Type: default,mms,supl,dun

USA AT&T APN (3G) Settings:
Name: AT&T
APN: wap.cingular
Proxy: [blank]
Port: [blank]
Username: WAP@CINGULARGPRS.COM [case sensitive]
Password: CINGULAR1 [case sensitive]
Server: [blank]
MMSC: http://mmsc.cingular.com
MMS Proxy: wireless.cingular.com
MMS Port: 80
MCC:310
MNC:410 (note. this could also be 310, 41 or 15)
APN Type: [blank]

USA T-Mobile APN (3G) Settings:
NOTE: This will ONLY work if you have an X10i (check beneath the battery).
NAME: T-Mobile USA
APN: epc.tmobile.com
PROXY: [Blank]
PORT: [Blank]
USERNAME: [Blank]
PASSWORD: [Blank]
SERVER: wap.voicestream.com
MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc
MMS PROXY: 216.155.165.50
MMS PORT: [Blank]
MCC: 310
MNC: 260
AUTH TYPE: NONE
APN TYPE: default,supl,mms