The “horrendous” phone signal in Canterbury city centre is a long-running gripe of residents and tourists alike. But could its most iconic landmark provide a controversial solution to a very modern problem? Brad Harper reports… “It is extremely bad. If you are in the shops, it is non-existent.” This complaint from shopper Viv Lilly about poor mobile reception in Canterbury city centre was echoed by most people KentOnline spoke to this week. “There are some good spots but I have not yet found where they are,” the 67-year-old said. Others agreed, describing reception as “hit and miss” and at tim…