Montreal has 5G coverage across the downtown core and major inner-city neighborhoods. The Plateau-Mont-Royal, Mile End, Rosemont, Villeray, and the Downtown core all have reliable 4G with expanding 5G from Bell and Rogers. Old Montreal (Vieux-Montréal), the waterfront, and the Old Port area have strong outdoor 4G and 5G.
Montréal-Trudeau International Airport (YUL) has 4G in both the US and international terminals. The 747 express bus from the airport to the city centre has 4G on the above-ground bus route. The STM (Société de transport de Montréal) metro has 4G connectivity at all underground stations on the Green, Orange, Blue, and Yellow lines. Signal is maintained in the tunnels on some stretches due to STM's distributed antenna system investment.
Mont-Royal Park (Parc du Mont-Royal) has 4G at the lookout and main trails. The Biodôme, Insectarium, and the Olympic Stadium area in Hochelaga-Maisonneuve have reliable outdoor 4G. The McGill University and Concordia University campuses in downtown Montreal have 5G in the outdoor areas and good indoor 4G in academic buildings.
Videotron, the local Quebec operator, provides strong 4G coverage specifically in Montreal and the province. Visitors using Bell or Rogers (both on HelloRoam plans) have equally broad coverage. Winter Festival (Fête des neiges) sites and the MURAL festival areas in the Plateau have adequate signal even during peak crowd events, though speeds slow significantly. Australian travellers should confirm their handset is unlocked and supports the local network bands.