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Mobile network operator giffgaff, which is owned by Telefónica and harnesses O2’s national UK virtual operator (mvno) platform, has published their 2025 Impact Report and revealed that eSIM adoption grew by 71% last year – helping more people get connected without the extra plastic – and they’re now home to a total of 4.26 million members (up from 4.11m in 2024).
Some of the report’s other highlights reveal that 66% of the phones giffgaff sold during 2025 via their website were refurbished (down from 67%) and around 17,000 members each month moved to a cheaper plan after opening the operator’s Best Plan Advice email, which is typically sent every month (this shows customers a summary of their recent mobile usage and suggests more cost-effective 4G/5G mobile plans).
The report also notes that 4,310 devices were taken in through the giffgaff recycle scheme (up from 2,649) and they donated 687 phones to help those most in need. You can find plenty more details in the full report below, including giffgaff’s progress on their emissions targets etc.
Giffgaff’s 2025 Impact Report
https://static1.squarespace.com/../Impact_Report_25_v0.8.pdf