i do not have caller id set up from my phone provider, but i apparently do not need one. i have managed to add a number from my call list into the blacklist. i selected the 'block mode' and then selected 'block blist'. this should mean that any numbers added to the blacklist will be blocked. i tested this by ringing the phone with my mobile, but now there is no ring tone when i call! why? i have not added my mobile number to the blacklist :( can you help? br barry