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 | Offer Details | Total Cost | Buy Online |
|---|---|---|---|---|
 Samsung Galaxy S25 FE 256GB Jetblack | £449.00 | Samsung Galaxy S25 FE 256GB Jetblack | equivalent to £470.00/mth over 1 mths |   View More Info |
 Samsung Galaxy S25 FE 256GB Icyblue | £449.00 | Samsung Galaxy S25 FE 256GB Icyblue | equivalent to £470.00/mth over 1 mths | View More Info |
 Samsung Galaxy S25 FE 256GB Navy | £449.00 | Samsung Galaxy S25 FE 256GB Navy | equivalent to £470.00/mth over 1 mths | View More Info |
 Apple iPhone 14 Pro 256GB Space Black | £449.99 | Apple iPhone 14 Pro 256GB Space Black | equivalent to £470.99/mth over 1 mths | View More Info |
 Apple iPhone 14 Pro 256GB Silver | £449.99 | Apple iPhone 14 Pro 256GB Silver | equivalent to £470.99/mth over 1 mths | View More Info |
 Apple iPhone 14 Pro 256GB Gold | £449.99 | Apple iPhone 14 Pro 256GB Gold | equivalent to £470.99/mth over 1 mths | View More Info |
 Apple iPhone 14 Pro 256GB Deep Purple | £449.99 | Apple iPhone 14 Pro 256GB Deep Purple | equivalent to £470.99/mth over 1 mths | View More Info |
 Google Pixel 9a 128GB Peony | £459.00 | Google Pixel 9a 128GB Peony | equivalent to £480.00/mth over 1 mths | View More Info |
 Google Pixel 9a 128GB Iris | £459.00 | Google Pixel 9a 128GB Iris | equivalent to £480.00/mth over 1 mths | View More Info |
 Google Pixel 9a 128GB Obsidian | £459.00 | Google Pixel 9a 128GB Obsidian | equivalent to £480.00/mth over 1 mths | View More Info |
 Google Pixel 9a 128GB Porcelain | £459.00 | Google Pixel 9a 128GB Porcelain | equivalent to £480.00/mth over 1 mths | View More Info |
 Apple iPhone 16 Pro 256GB White Titanium | £749.99 | Apple iPhone 16 Pro 256GB White Titanium | equivalent to £770.99/mth over 1 mths | View More Info |
 Apple iPhone 16 Pro 256GB Desert Titanium | £749.99 | Apple iPhone 16 Pro 256GB Desert Titanium | equivalent to £770.99/mth over 1 mths | View More Info |
 Samsung Galaxy S24 Ultra 512GB Titanium Violet | £799.99 | Samsung Galaxy S24 Ultra 512GB Titanium Violet | equivalent to £820.99/mth over 1 mths | View More Info |
 Samsung Galaxy S24 Ultra 512GB Titanium Yellow | £799.99 | Samsung Galaxy S24 Ultra 512GB Titanium Yellow | equivalent to £820.99/mth over 1 mths | View More Info |
 Samsung Galaxy S24 Ultra 512GB Titanium Black | £799.99 | Samsung Galaxy S24 Ultra 512GB Titanium Black | equivalent to £820.99/mth over 1 mths | View More Info |
 Samsung Galaxy S24 Ultra 512GB Titanium Grey | £799.99 | Samsung Galaxy S24 Ultra 512GB Titanium Grey | equivalent to £820.99/mth over 1 mths | View More Info |
 Samsung Galaxy Z Flip7 256GB Blue Shadow | £849.00 | Samsung Galaxy Z Flip7 256GB Blue Shadow | equivalent to £870.00/mth over 1 mths | View More Info |
 Samsung Galaxy Z Flip7 256GB Jetblack | £849.00 | Samsung Galaxy Z Flip7 256GB Jetblack | equivalent to £870.00/mth over 1 mths | View More Info |
 Samsung Galaxy Z Flip7 256GB Coralred | £849.00 | Samsung Galaxy Z Flip7 256GB Coralred | equivalent to £870.00/mth over 1 mths | View More Info |
 Google Pixel 9 Pro 128GB Obsidian | £859.00 | Google Pixel 9 Pro 128GB Obsidian | equivalent to £880.00/mth over 1 mths | View More Info |
 Honor Magic7 Pro 512GB Black | £959.99 | 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 | Samsung Galaxy S25 Edge 512GB Titanium Jetblack | equivalent to £1,020.00/mth over 1 mths | View More Info |
 Samsung Galaxy Z Fold7 256GB Silver Shadow | £1599.00 | Samsung Galaxy Z Fold7 256GB Silver Shadow | equivalent to £1,620.00/mth over 1 mths | View More Info |
 Samsung Galaxy Z Fold7 256GB Blue Shadow | £1599.00 | Samsung Galaxy Z Fold7 256GB Blue Shadow | equivalent to £1,620.00/mth over 1 mths | View More Info |
 Samsung Galaxy Z Fold7 256GB Jetblack | £1599.00 | Samsung Galaxy Z Fold7 256GB Jetblack | equivalent to £1,620.00/mth over 1 mths | View More Info |