FlexiFone provides a multi‑network SIM that combines EE, O₂, Vodafone and Three into a single eSIM or physical SIM, automatically selecting the strongest signal to maintain voice, SMS and 5G data connectivity. Customers manage plans, network blocking, hotspot tethering and global roaming via a web dashboard or mobile app, with flexible 30‑day or annual subscription options.
Funding
Funding not disclosed
Founders
Product
Problem
Mobile users in the UK often encounter patchy signal or dead zones because a single‑carrier SIM can only connect to one network. When the primary network loses coverage, devices either drop the connection or experience slow data rates, limiting reliable voice, SMS, and 5G usage, especially while traveling.
Solution
FlexiFone supplies a multi‑network SIM that aggregates the four major UK operators (EE, O₂, Vodafone, Three) into a single eSIM or physical SIM. The SIM continuously monitors signal strength and automatically switches (“unsteered”) to the strongest network without user intervention. Plans are offered on a 30‑day rolling or annual basis, covering data‑only, voice + data, and global roaming across 55+ destinations. Users can block specific networks, enable hotspot tethering, and manage settings via a web dashboard or mobile app, delivering consistent coverage and 5G access while keeping costs flexible.
Target Audience
Primary customers are UK mobile users who need reliable coverage in rural or travel scenarios—such as commuters, frequent travelers, and heavy data consumers—who prefer a secondary SIM to augment their primary carrier.
Features
- Automatic, real‑time network selection across EE, O₂, Vodafone, and Three based on strongest signal
- Supports both eSIM (instant provisioning via email) and physical SIM (postal delivery)
- Network‑blocking option to exclude a primary carrier and force use of alternative networks
- 5G connectivity and unrestricted hotspot tethering on data‑only plans
- Global roaming with free data/voice in 55+ destinations and optional add‑on packages for additional usage abroad
- Flexible subscription models: 30‑day rolling or discounted annual contracts, with plans ranging from 2 GB to 100 GB and voice minutes from 100 to 500 SMS/minute bundles
- User‑friendly management portal and iOS app for plan changes, usage monitoring, and SIM activation within 60 seconds