# Indoor 4G, whichever network you use

> Predicted indoor coverage from all four mobile networks, not merely one.

- Category: Technology
- Cadence: annual
- Status: Published on a annual cadence.
- Dataset key: `mobile-indoor-4g`
- Source: [Ofcom](https://www.ofcom.org.uk/phones-and-broadband/coverage-and-speeds/connected-nations-update-spring-2026)
- Licence: Open Government Licence v3.0 — [terms](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Canonical page: [https://londongraph.com/g/indoor-four-network-4g](https://londongraph.com/g/indoor-four-network-4g)
- Machine-readable record: [https://londongraph.com/data/indoor-four-network-4g](https://londongraph.com/data/indoor-four-network-4g)

## Methodology

Ofcom's predicted percentage of premises with indoor 4G coverage from all four mobile network operators. Radio models cannot guarantee reception in every room; building materials, handset and local conditions still matter.

## Visualisations

- [Map](https://londongraph.com/g/indoor-four-network-4g): Compare the same measure geographically.
- [Overview](https://londongraph.com/g/indoor-four-network-4g?view=overview): Predicted indoor coverage from all four mobile networks, not merely one.
- [Distribution](https://londongraph.com/g/indoor-four-network-4g?view=distribution): Place every mapped area in the selected measure's distribution while preserving missing values.

## Citation guidance

Attribute the original publisher named above and identify LondonGraph as the visualisation and methodology layer. Do not describe live values as a historical census, and do not present placeholder values as observations.