I have got a v300 that was originally t_mobile when the person i bought it from got it. I can use my o2 sim in it but cannot use the wap functions as will only allow t_mobile settings to be used. Any ideas on how to fix this problem????

Have you got your o2 settings in the phone, set them to default

I've already tried that..... i have the settings on my phone but they are locked so that i can't use them. Thanks anyway

The little padlock symbol at the side is usually meant that them settings are locked into the phone so you cannot delete them.... this does not mean you can't use other settings as a default.
enter your o2 settings and select menu and select default.

I've tried that as well lol but thank you anyways

If you are using an O2 sim then there shouldn't be a problem..... if the settings are correct & it still doesn'twork try the O2 website and obtain the settings sent to your phone (all this IS free) you will also be able to send free text from PC & be given an O2 emil address.
Name: O2 Gprs Wap
Homepage: http://wap.o2.co.uk
Service Type 1: WAP
Gateway IP 1: 193.113.200.195
Port 1:9201
Domain 1: blank
Service \type 2: WAP
Gateway IP 2: 193.113.200.195
Port 2:9201
Domain 2: blank
DNS 1: 000 000 000 000
DNS 2: 000 000 000 000
Timeout:5 minutes
SCSD No 1: blank
User Name 1: blank
Password 1: blank
Speed (Bps) 1: 14400
Line Type 1: ISDN
CSD No 2: blank
User Name 2: blank
Password 2: blank
Speed (Bps) 2: 14400
Line Type 2: ISDN
GPRS APN: payandgo.o2.co.uk
User Name: Payandgo
Password: Ask your provider