A guide to phone network settings

- AT&T 
Frequencies
2G (GSM/GPRS/EDGE): 850 and 1900 MHz
3G (UMTS/HSPA): 850 and 1900 MHz
4G (LTE): 700 and 1700/2100 MHz(AWS)

APN
APN: wap.cingular
User Name: wap@cingulargprs.com
Password: CINGULAR1
Proxy wireless.cingular.com port: 80

- T-Mobile 
Frequencies
2G (GSM/GPRS/EDGE): 850 and 1900 MHz
3G (UMTS/HSPA): 1700 and 1900 MHz
4G (LTE): 1700 MHz

APN
APN: epc.tmobile.com
UserName: (Blank)
PassWord: (Blank)

-Virgin Mobile Canada
Frequency
WCDMA 850/1900

APN
APN: inet.bell.ca
Proxy: web.wireless.bell.ca
Port: 80
Username: <Not set>
Password: <Not set>
Server: <Not set>
MMSC: http://mms.bell.ca/mms/wapenc
MMS proxy: web.wireless.bell.ca
MMS port: 80
MMS protocol: WAP 2.0
MCC : 302
MNC : 610
APN type : <Notset>

- O2
Frequency
GSM 900/1800, WCDMA 2100

APN
APN : payandgo.o2.co.uk 
Username: payandgo 
Password : password

- Vodafone
Frequency
GSM 900/1800
WCDMA 2100

APN
APN name: SMART
Username: web
Password: web
Dial number: *99#

Frequency
850Mz 3G capability (in Aust also called NextG). 
4G/LTE: 1800Mz.

APN
APN: telstra.wap (or if broadband device: telstra.internet)
Username: 
Password: 

- Spark (formerly telecom NZ)
Frequency
WCDMA/UMTS, 850MHz

APN
APN: internet
Username: (blank)
Password: (blank)

Frequency
Multiple frequencies around the world. 
Different in each country.

APN
APN: speedidata.com
Username: speedidata
Password: speedidata

dataGO Travel SIM
Frequency
Multiple frequencies in each country around the world.

APN
APN: roamline
Username (leave empty)
Password (leave empty)