I won't use a dual-SIM phone as although that would serve the purpose of keeping my name from the WGs I see, it doesn't prevent the phone company from knowing what I'm up to. I.e. they can see that the same phone is being used so will know who you are when using your punting SIM. I know we're not doing anything illegal and before somebody points it out, yes I am most likely being over-cautious, but the less people who know both my real name and my active interest in punting, the better.