For Nokia: Go to Tools--> Settings-->Connection-->Access point-->(chick option) New access point and Set the following parameter
For Ericsson: Go to Setting--> Connectivity--> you will see the options there
1. Account Name - BPL WAP
2. Username -
3. Password -
4. Proxy - Enabled/yes
5. Homepage - http://wap.mizone.bplmobile.com
6. Proxy and Server address - 10.0.0.10
7. Proxy and Server Port - 8080
8. Acces Point Name - mizone
9. Data bearer - GPRS/ Packetdata
10. Authentication Type - Normal