I am dubious - not that I can't learn to alter my (android) phone so it thought it was in London when really it is in NY - but that I would not be tripped up by

I am dubious - not that I can't learn to alter my (android) phone so it thought it was in London when really it is in NY - but that I would not be tripped up by correlations. It would have to be a slow sensible variation, it would have to be within the correct cell - London / NY would not work - plus other dumb stuff that I simply don't know about radio propagation or being seen on a CCTV camera etc. Nothing about spying is ever going to be simple. Especially building those vital human relationships.