Cell towers in Saint-Quentin-Fallavier (Isère)

Most of the town's 11 masts are pylons (8); 1 silo make up the rest of the mix.

Masts stand at Bosserand, Le Grand Luzais, Les Combes, Tharabie, 116 Avenue des Arrivaux and 9027 Route Nationale 6.

Systems from 1999 are still on the register. Local 5G started with Free Mobile in December 2020; SFR followed in August 2021, Bouygues Telecom followed in September 2021. 2021 was the busiest year, with 29 new systems, most of them 5G.

Over the past 12 months ANFR recorded 17 new systems here. Approved additions not yet in service are pending on 3 existing masts, for example Bouygues Telecom (4G and 5G, including 5G at 3.5 GHz) at 33 Chem de Provence, Free Mobile (5G 3.5 GHz) at 116 Avenue des Arrivaux and Free Mobile (5G 700 MHz) at Les Combes. 9 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

The highest support stands 35 m at La Fessy (pylon). The median is 30 m, above the Isère median of 26 m.

2 masts carry all four networks; 3 supports carry only Free Mobile.

Among the 43 Isère towns with at least five masts, Saint-Quentin-Fallavier ranks 10th by mast count. With 11 masts for 6,189 residents, or 18 per 10,000, it has more masts per inhabitant than the median for those towns (9).

On 3.5 GHz, the fastest 5G band: Bouygues Telecom on 3 of its 6 masts, Free Mobile on 3 of its 6 masts, Orange on 3 of its 4 masts and SFR on 3 of its 6 masts.

The widest declared gap between neighbouring supports is about 1.6 km, to the south-east of the centre.

8.3 km to the north-west, neighbouring Saint-Bonnet-de-Mure has only 5 masts.

6,189 residents over 24 km²: supports are mostly pylons, not rooftops. It is part of the CA Porte de l'Isère (CAPI) intercommunal grouping.

Figures above cover installations declared to ANFR as in service or technically operational, as of October 2026; approved projects are not counted.