O2 Unlimited + 125GB at £21 Deals
Here are details of the O2 Unlimited + 125GB at £21 tariff along with all the mobile phones currently available on the tariff. Alongside each phone is information about the cheapest deal and you can get full details by clicking on the 'Buy Now' links which will take you to the relevant retailer's site.
O2 Unlimited + 125GB at £21 Tariff Details
| Network | Tariff Name | Contract Length | Free Mins | Free Txts | Initial Monthly Cost |
|---|---|---|---|---|---|
 | O2 Unlimited + 125GB at £21 (1) | Not Applicable | Unlimited | Unlimited | £21.00 Monthly price will increase every April by £2.50 |
Mobiles Available on O2 Unlimited + 125GB at £21
| Phone | Upfront Cost | Monthly Cost | Offer Details | Total Cost | Buy Online |
|---|---|---|---|---|---|
 Google Pixel 9a 128GB Obsidian | £459.00 | £21.00 (price may rise during contract) | Google Pixel 9a 128GB Obsidian | equivalent to £480.00/mth over 1 mths |   View More Info |
 Google Pixel 9a 128GB Porcelain | £459.00 | £21.00 (price may rise during contract) | Google Pixel 9a 128GB Porcelain | equivalent to £480.00/mth over 1 mths | View More Info |
 Google Pixel 9a 128GB Iris | £459.00 | £21.00 (price may rise during contract) | Google Pixel 9a 128GB Iris | equivalent to £480.00/mth over 1 mths | View More Info |
 Samsung Galaxy S23 Ultra 512GB Lavender | £499.99 | £21.00 (price may rise during contract) | Samsung Galaxy S23 Ultra 512GB Lavender | equivalent to £520.99/mth over 1 mths | View More Info |
 Samsung Galaxy S23 Ultra 512GB Phantom Black | £499.99 | £21.00 (price may rise during contract) | Samsung Galaxy S23 Ultra 512GB Phantom Black | equivalent to £520.99/mth over 1 mths | View More Info |
 Samsung Galaxy S23 Ultra 512GB Cream | £499.99 | £21.00 (price may rise during contract) | Samsung Galaxy S23 Ultra 512GB Cream | equivalent to £520.99/mth over 1 mths | View More Info |
 Apple iPhone 14 Pro 128GB Space Black | £549.99 | £21.00 (price may rise during contract) | Apple iPhone 14 Pro 128GB Space Black | equivalent to £570.99/mth over 1 mths | View More Info |
 Apple iPhone 14 Pro 128GB Silver | £549.99 | £21.00 (price may rise during contract) | Apple iPhone 14 Pro 128GB Silver | equivalent to £570.99/mth over 1 mths | View More Info |
 Apple iPhone 14 Pro 128GB Gold | £549.99 | £21.00 (price may rise during contract) | Apple iPhone 14 Pro 128GB Gold | equivalent to £570.99/mth over 1 mths | View More Info |
 Apple iPhone 14 Pro 128GB Deep Purple | £549.99 | £21.00 (price may rise during contract) | Apple iPhone 14 Pro 128GB Deep Purple | equivalent to £570.99/mth over 1 mths | View More Info |
 Apple iPhone 16 128GB Pink | £549.99 | £21.00 (price may rise during contract) | Apple iPhone 16 128GB Pink | equivalent to £570.99/mth over 1 mths | View More Info |
 Apple iPhone 16 128GB Ultramarine | £549.99 | £21.00 (price may rise during contract) | Apple iPhone 16 128GB Ultramarine | equivalent to £570.99/mth over 1 mths | View More Info |
 Apple iPhone 16 128GB Teal | £549.99 | £21.00 (price may rise during contract) | Apple iPhone 16 128GB Teal | equivalent to £570.99/mth over 1 mths | View More Info |
 Apple iPhone 16 128GB White | £549.99 | £21.00 (price may rise during contract) | Apple iPhone 16 128GB White | equivalent to £570.99/mth over 1 mths | View More Info |
 Apple iPhone 16 128GB Black | £549.99 | £21.00 (price may rise during contract) | Apple iPhone 16 128GB Black | equivalent to £570.99/mth over 1 mths | View More Info |
 Apple iPhone 15 Pro Max 256GB Natural Titanium | £659.99 | £21.00 (price may rise during contract) | Apple iPhone 15 Pro Max 256GB Natural Titanium | equivalent to £680.99/mth over 1 mths | View More Info |
 Apple iPhone 15 Pro Max 256GB Blue Titanium | £659.99 | £21.00 (price may rise during contract) | Apple iPhone 15 Pro Max 256GB Blue Titanium | equivalent to £680.99/mth over 1 mths | View More Info |
 Apple iPhone 15 Pro Max 256GB White Titanium | £659.99 | £21.00 (price may rise during contract) | Apple iPhone 15 Pro Max 256GB White Titanium | equivalent to £680.99/mth over 1 mths | View More Info |
 Samsung Galaxy S25 Plus 256GB Navy | £799.00 | £21.00 (price may rise during contract) | Samsung Galaxy S25 Plus 256GB Navy | equivalent to £820.00/mth over 1 mths | View More Info |
 Honor Magic7 Pro 512GB Black | £959.99 | £21.00 (price may rise during contract) | Honor Magic7 Pro 512GB Black | equivalent to £980.99/mth over 1 mths | View More Info |
 Samsung Galaxy S25 Edge 512GB Titanium Jetblack | £999.00 | £21.00 (price may rise during contract) | Samsung Galaxy S25 Edge 512GB Titanium Jetblack | equivalent to £1,020.00/mth over 1 mths | View More Info |
 Honor Magic V3 512GB Black | £1059.00 | £21.00 (price may rise during contract) | Honor Magic V3 512GB Black | equivalent to £1,080.00/mth over 1 mths | View More Info |