Useful network numbers (all operators)

[little_pob]

Vodafone
All customers:
191 - customer services
*#100# - displays your mobile number on the handset
*#103# - displays current network time
*#147# - returns number of last caller to handset display
1471 - last caller, with return call option.
121 - voice mail
1210 - cancel all voice mail diverts
1211 - reset all voice mail settings to default
1212 - divert all calls to voice mail
1213 - cancels the 1212 divert
*#104# - displays your current voice mail number (in international format, e.g. +44)
*61*mailboxnumber*10*xx# - Sets the ring duration before diverting to voice mail (mail box number should be in international format of +44 and where xx is a value between 5 and 30 seconds)
##0021# - cancel call forwarding (if not working try below)
##21# - cancel call forwarding (if not working try above)

Answering service:
07663 700900 - set up and personalise 'respond plus' answering service
*122# - activate 'respond plus' answering service
#122# - turns off 'respond plus' answering service

Pay Monthly:
44555 - check account balance

Pay as you go:
2345 - 'creditline' and balance
*#1345# - displays credit balance and any reduced rate qualifiers
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O2
All customers:
1702 - customer services
1471 - last caller, with return call option.
1750 - Enable voice mail
1760 - Disable voice mail
901 - collect voice mail
*0# - enter at the start of a text message (e.g. *0#Hello WoD) to enable single message delivery reporting

Pay Monthly:
402 - alternative customer services number
If your contract is via Carphone Warehouse you can get your remaining minutes/texts sent as a text to your mobile by calling 08000490049 option 2, 2 and select o2 service and you can reach CPW/o2 customer service team (0800 numbers are no longer free from O2 mobiles so phone from a landline).

Pay as you go:
4444 - credit line
*#10# - displays credit balance
Text BALANCE to 20202 for remaining Bolt Ons
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Orange
All customers:
100 - Orange operator
123 - voice mail
177 - Sports news, travel info, lotto results etc
227 - Set up/cancel Orange text alerts
241 - Orange wednesdays 2 for 1 cinema offer

Pay Monthly:
150 - customer services

Pay as you go:
450 - customer services
453 - credit line
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3
All customers:
333 - customer services
123 - all mail services (voicemail, email, videomail)

Pay Monthly:
[none]

Pay as you go:
[none]
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T-Mobile
All customers:
150 - Customer services
222 - voice mail

Pay Monthly:
[none]

Pay as you go:
150 - balance line
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Virgin Mobile
All customers:
789 - customer services
+447958879890 - SMS Service Centre number

Pay Monthly:
[none]

Pay as you go:
789 - credit level (as recorded message)
(NB Virgin Mobile is carried on the T-Mobile network, try their numbers too.)
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If anyone has any numbers not listed here please post them below (don't forget to include the network too ). Either the mods or I will then update this post.