How's this for t's and c's

Provides unlimited browsing on mobile handsets in the UK.
Not applicable to connection via CSD.
To ensure a high quality of service for all our customers a fair use policy applies.

T-Mobile defines fair use as total UK data (both sent and received) of up to 1GB per month. T-Mobile may contact customers who exceed 1GB of data and ask them to reduce their usage. If data usage is not reduced, notice may be given, after which network protection controls may be applied.

Not to be used for other activities (including but not limited to) : modem access for computers, internet based video/audio streaming services, peer to peer file sharing, internet based video downloads, internet phone calls and instant messaging. If such use is detected, notice may be given after which network protection controls may be applied.
The application of network protection controls will result in a reduced speed of transmission.