https://community.o2.co.uk/t5/Discussions-Feedback/cold-calls/m-p/907657#M70570 <P>If a number is showing on the screen then block it. Most phones have that option these days, if not there is most certainly an app which will let you do this.</P> Wed, 26 Aug 2015 16:58:25 GMT jonsie 2015-08-26T16:58:25Z https://community.o2.co.uk/t5/Discussions-Feedback/cold-calls/m-p/907640#M70568 <P>how do I report a cold caller with no telephone preference service for mobiles?</P> Wed, 26 Aug 2015 15:53:58 GMT https://community.o2.co.uk/t5/Discussions-Feedback/cold-calls/m-p/907640#M70568 Anonymous 2015-08-26T15:53:58Z https://community.o2.co.uk/t5/Discussions-Feedback/cold-calls/m-p/907642#M70569 I'm not sure I understand the question.<BR />You can register a mobile number with TPS if you wish to but this is unlikely to stop any calls coming from overseas.<BR />Easiest way is to just block the numbers on your phone. Wed, 26 Aug 2015 15:59:10 GMT https://community.o2.co.uk/t5/Discussions-Feedback/cold-calls/m-p/907642#M70569 MI5 2015-08-26T15:59:10Z https://community.o2.co.uk/t5/Discussions-Feedback/cold-calls/m-p/907657#M70570 <P>If a number is showing on the screen then block it. Most phones have that option these days, if not there is most certainly an app which will let you do this.</P> Wed, 26 Aug 2015 16:58:25 GMT https://community.o2.co.uk/t5/Discussions-Feedback/cold-calls/m-p/907657#M70570 jonsie 2015-08-26T16:58:25Z https://community.o2.co.uk/t5/Discussions-Feedback/cold-calls/m-p/907682#M70582 <P>I just add to my reject list. Easy enough...</P> Wed, 26 Aug 2015 17:53:57 GMT https://community.o2.co.uk/t5/Discussions-Feedback/cold-calls/m-p/907682#M70582 Cleoriff 2015-08-26T17:53:57Z