Mobile phone operator history and phones I used

1. 2002: BT (Vodafone) (Philips Cellnet)
2. 2009: Tesco Mobile (O2) (Nokia 1110, Sony Ericsson W300i, LG Cookie, Sony Ericsson W850i)
3. 2010: Three (HTC Wildfire)
4. 2012: Giffgaff (O2) (LG Optimus 2X, Google Nexus 4, 5, 5X)
5. 2017: Vodafone (Google Pixel 1, 2, 5, 6, 8, 9)
6. 2022 (6 months free): Lebara (Vodafone)