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Retailer / private label

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Finland's largest phone repair chain and used-phone retailer, with over 30 stores nationwide.

Last updated September 28, 2026

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Overview

Fonum Oy Ab is a Finnish phone repair and retail chain founded in 2012 in Espoo. It operates the country's most extensive phone service network, with more than 30 locations across Finland, from Helsinki to Rovaniemi, typically situated in shopping centres and K-Citymarket stores. The company offers fast and affordable repair services for phones and tablets, backed by a 24-month warranty, and also sells used phones, new accessories, and screen protectors. Its online store provides protective cases and tempered glass for various phone models. Fonum has expanded its service portfolio to include original iPhone batteries alongside its existing range of replacement and extended-life batteries. The company also serves business customers, offering maintenance and protection services for corporate mobile devices without long-term commitments. Fonum's repair services are available without appointment, with some repairs completed within an hour. The company positions itself as a reliable, nationwide provider of phone maintenance and a trusted place to buy used phones.

History

Fonum Oy Ab was established in 2012 in Espoo, Finland, as a phone repair business. Over the years, it grew into a nationwide chain, expanding its network to approximately 35 locations across the country. The company initially focused on repairing phones and tablets, later adding retail of used phones, accessories, and screen protectors. In recent years, Fonum launched a new online store offering protective cases and tempered glass for various phone models. It also introduced original iPhone batteries to complement its existing battery options, including replacement and extended-life batteries. The company serves both consumers and businesses, providing maintenance and protection services for corporate mobile devices. As of its current operations, Fonum operates over 30 stores, often located in shopping centres and K-Citymarket stores, and offers repair services without appointment, with some repairs completed within an hour.

  • 2012

    Fonum Oy Ab founded in Espoo, Finland.

  • Expanded to approximately 35 locations across Finland.

  • Launched new online store with protective cases and tempered glass.

  • Added original iPhone batteries to product range.

Products and positioning

Reliable, fast, and affordable nationwide phone repair and used-phone retail chain.

  • Phone repair services

    Fast and affordable repair for phones with 24-month warranty.

  • Tablet repair services

    Repair services for tablet computers.

  • Used phones

    Wide selection of used phones available in stores.

  • Phone accessories

    New accessories including protective cases and screen protectors.

  • Original iPhone batteries

    Original iPhone batteries now available, complementing replacement and extended-life batteries.

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