Note : Dial - *99#

Vodafone
Vodafone has several possible options for Pay As You Go SIM cards. Try each one in turn until the connection works. All use the same username and password.

APN (contract): internet
APN (PAYG): pp.internet
APN (PAYG): ppbundle.internet
APN (PAYG): smart
APN (PAYG): pp.vodafone.co.uk
Username: web
Password: web

Orange

APN: orangeinternet
Username: leave blank
Password: leave blank

O2
APN (contract): mobile.o2.co.uk
APN (PAYG): m-bb.o2.co.uk
Username: web
Password: web

T-Mobile
 APN: general.t-mobile.uk
Username: leave blank
Password: leave blank

Three
APN: 3internet
Username: leave blank
Password: leave blank

Tesco Mobile (uses the O2 network)
APN: prepay.tesco-mobile.com
Username: tescowap
Password: password

Virgin Mobile (uses the T-Mobile network)
APN: goto.virginmobile.uk
Username: user
Password: leave blank

BT Mobile (uses the Vodafone network)
APN: btmobile.bt.com
Username: bt
Password: bt

ASDA Mobile (uses the Vodafone network)
APN: asdamobiles.co.uk
Username: web
Password: web

Manx Telecom (Isle of Man)
APN: 3gpronto
Username: leave blank
Password: leave blank

Sure Mobile (Guernsey & Isle of Man)
APN: internet
Username: leave blank
Password: leave blank

Wave Telecom (Guernsey)
APN: pepper
Username: leave blank
Password: leave blank

Airtel Vodafone (Guernsey)
APN: airtel-ci-gprs.com
Username: leave blank
Password: leave blank

Sure Mobile (Jersey)
APN: internet
Username: leave blank
Password: leave blank

Jersey Telecom (Jersey)
APN: pepper
Username: leave blank
Password: leave blank

Airtel Vodafone (Jersey)
APN: airtel-ci-gprs.com
Username: leave blank
Password: leave blank

GiffGaff (uses the O2 network)
APN: giffgaff.com
Username: giffgaff
Password: password