Unlimited data SIM only deals

10 of 20 results
Sorted by: Bestselling

List of SIM Only deals

  1. Exclusive
    Promoted

    SMARTY SIM Deal

    Uses Three Mobile's Network

    Three Mobile logo

    Unlimited5G data

    £15.00 a month

    1 month contract

    Includes roaming in 27 destinations

    • No 2025 price rise
  2. Exclusive

    Lebara Mobile SIM Deal

    Uses Vodafone's Network

    Vodafone logo

    Unlimited5G data

    £9.98 a monthfor 3 months, then £24.95Price details

    1 month contract

    Includes roaming in 37 destinations

    • No 2025 price rise
  3. Promoted

    Talkmobile SIM Deal

    Uses Vodafone's Network

    Vodafone logo

    Unlimited5G data

    £16.00 a month

    1 month contract

    Includes roaming in 46 destinations

    • No 2025 price rise
  4. Promoted

    iD Mobile SIM Deal

    Uses Three Mobile's Network

    Three Mobile logo

    Unlimited5G data

    £15.00 a month

    1 month contract

    Includes roaming in 42 destinations

    • No 2025 price rise
    • 3 months Free Apple TV+ Music and Arcade
    • Free roaming up to 30GB
  5. Promoted

    giffgaff SIM Deal

    Uses O2's Network

    O2 logo

    Unlimited5G data

    £25.00 a month

    18 month contract

    Includes roaming in 38 destinations

    • No 2025 price rise
  6. Promoted

    Three Mobile SIM Deal

    Uses Three Mobile's Network

    Three Mobile logo

    Unlimited5G data

    £23.00 a monthuntil April 2026then price rises every April in contract by £1.50

    12 month contract

    • No 2025 price rise
  7. Honest Mobile SIM Deal

    Uses Three Mobile's Network

    Three Mobile logo

    Unlimited5G data

    £12.50 a monthfor 2 months, then £25.00Price details

    No contract

    Includes roaming in 44 destinations

    • 5 days of free EU roaming
  8. Three Mobile SIM Deal

    Uses Three Mobile's Network

    Three Mobile logo

    Unlimited5G data

    £20.00 a monthuntil April 2026then price rises every April in contract by £1.50Price details

    24 month contract

    • No 2025 price rise
  9. spusu Mobile SIM Deal

    Uses EE's Network

    EE logo

    Unlimited5G data

    £29.90 a month

    1 month contract

    Includes roaming in 35 destinations

    • No 2025 price rise
  10. VOXI SIM Deal

    Uses Vodafone's Network

    Vodafone logo

    Unlimited5G data

    £35.00 a month

    No contract

    Includes roaming in 4 destinations

    • No 2025 price rise
    • £20 Amazon Gift Card
    • Unlimited Social Media
Can't find what you're looking for?

Previously, most mobile networks raised contract prices in line with inflation. From January 2025, however, Ofcom will ban inflation-based price hikes on new contracts, requiring future increases to be fixed and clearly stated upfront.

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