Not to mention a full-version Phormware application embedded into the handset, listening to your conversations and occasionally interrupting with "You said 'BT are fuckers', would you like to hear some adverts for other services available from BT? Say 'OK' to continue."
But they don't know who you are* (terms and conditions apply. Words used do not describe the service, including phrases such as 'unlimited'. Please see website for full details. When stating we do not know who you are, that does not imply we can't find out, but we're not going to tell you that.), so that's ok. And it keeps you safe from people who might otherwise listen to your conversation whilst sat next to you on the train. Really.
Cynical about anything from BT these days? Moi?