These Profiles need to be entered in enable mode on router.
Use correct profile depending on Network Sims its on.

For o2 Sims :

Authentication: Normal
Network type: Ipv4
cellular 0 gsm profile create 1 mobile.o2.co.uk ipv4 chap web web

!

For Vodaphone Sims :

Authentication: Normal
Network type: Ipv4
cellular 0 gsm profile create 1 internet ipv4 chap web web

!

For Tmobile Sims :

Authentication: Normal
Network type: Ipv4
cellular 0 gsm profile create 1 general.t-mobile.uk ipv4 chap web web

!

For 3G Sims :

Authentication: Normal
Network type: Ipv4
cellular 0 gsm profile create 1 3internet

!

chat-script mobile “” “ATDT*98*1#” TIMEOUT 60 CONNECT

!

interface Cellular0
dialer string mobile
ppp chap hostname web
ppp chap password 0 web

!

line 3
exec-timeout 0 0
script dialer mobile

Additional Info :

All settings are case sensitive !

Vodafone

APN (contract): internet
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: btmobile2.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