Public Mobile has opened a couple more stores and turned their network on in the Burlington area. On the company blog they state that coverage is “in the East extending to the border with Hamilton (intersection of Highway 403 and Highway 6). Coverage is available from the lake north to Mainway (East of Guelph Line) and to Highway 403 (West of Guelph Line)”. So it now looks like they have full coverage stretching the edge of Pickering to Hamilton.
Check it here at Public Mobile