Tesco Mobile mobile network: coverage, customer service and complaints
Last updated: 22 October 2026
Tesco Mobile is a joint venture between Tesco and Virgin Media O2 and uses O2's network.
Tesco Mobile at a glance
- Type: Virtual network using O2
- Owned by: Tesco and Virgin Media O2 (joint venture)
- What it sells: SIM only plans, phone contracts with flexible terms, Clubcard Prices discounts and pay-as-you-go.
Tesco Mobile is regularly among the least complained-about networks in Ofcom's figures, and Clubcard Prices can lower monthly costs.
Tesco Mobile coverage
Tesco Mobile doesn't own masts — it uses O2's network. Wherever O2 has signal, Tesco Mobile customers should too. Coverage varies street by street and indoors, so check your home and work postcodes on Ofcom's coverage checker before you buy.
Customer feedback: official complaint figures
Ofcom publishes how many complaints it receives about each major mobile provider for every 100,000 pay-monthly customers. In the October to December 2025 figures, Tesco Mobile received 1 complaints per 100,000 customers — below the industry average of 3.
| Provider | Jan–Mar | Apr–Jun | Jul–Sep | Oct–Dec |
|---|---|---|---|---|
| Tesco Mobile | 1 | 1 | 1 | 1 |
| Industry average | 2 | 2 | 2 | 3 |
Source: Ofcom telecoms and pay-TV complaints, Q4 2025. Lower is better. Figures are rounded by Ofcom.
Contact Tesco Mobile customer service
- From a Tesco Mobile phone: 4455
- From any other phone: 0345 301 4455
- Help: www.tescomobile.com/help
These are the contact routes Tesco Mobile publishes. Numbers starting 03 cost the same as a normal landline call and are usually included in phone plan minutes; 0800 and 0808 numbers are free. Check Tesco Mobile's website for opening hours.
Complaining about Tesco Mobile
Complain to Tesco Mobile first. If it isn't resolved after eight weeks, or you get a 'deadlock letter', you can take it free of charge to the independent ombudsman scheme Tesco Mobile belongs to. Ofcom explains the process on its how to complain page.