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 £1.80 |
Mobiles Available on O2 Unlimited + 125GB at £21
| Phone | Upfront Cost | Offer Details | Total Cost | Buy Online |
|---|---|---|---|---|
 Samsung Galaxy S23 Ultra 256GB Green | £359.99 | Samsung Galaxy S23 Ultra 256GB Green | equivalent to £380.99/mth over 1 mths |   View More Info |
 Samsung Galaxy S23 Ultra 256GB Lavender | £359.99 | Samsung Galaxy S23 Ultra 256GB Lavender | equivalent to £380.99/mth over 1 mths | View More Info |
 Samsung Galaxy S23 Ultra 256GB Phantom Black | £359.99 | Samsung Galaxy S23 Ultra 256GB Phantom Black | equivalent to £380.99/mth over 1 mths | View More Info |
 Samsung Galaxy S23 Ultra 256GB Cream | £359.99 | Samsung Galaxy S23 Ultra 256GB Cream | equivalent to £380.99/mth over 1 mths | View More Info |
 Apple iPhone 15 Pro 256GB Black Titanium | £739.99 | Apple iPhone 15 Pro 256GB Black Titanium | equivalent to £760.99/mth over 1 mths | View More Info |
 Apple iPhone 15 Pro 256GB White Titanium | £739.99 | Apple iPhone 15 Pro 256GB White Titanium | equivalent to £760.99/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 |
 Samsung Galaxy Z Flip7 FE 256GB Black | £899.00 | Samsung Galaxy Z Flip7 FE 256GB Black | equivalent to £920.00/mth over 1 mths | View More Info |
 Google Pixel 9 Pro 256GB Obsidian | £959.00 | Google Pixel 9 Pro 256GB Obsidian | equivalent to £980.00/mth over 1 mths | View More Info |
 Google Pixel 9 Pro 256GB Hazel | £959.00 | Google Pixel 9 Pro 256GB Hazel | equivalent to £980.00/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 Ultra 512GB Titanium Whitesilver | £1349.00 | Samsung Galaxy S25 Ultra 512GB Titanium Whitesilver | equivalent to £1,370.00/mth over 1 mths | View More Info |
 Samsung Galaxy S25 Ultra 512GB Titanium Silverblue | £1349.00 | Samsung Galaxy S25 Ultra 512GB Titanium Silverblue | equivalent to £1,370.00/mth over 1 mths | View More Info |
 Samsung Galaxy S25 Ultra 512GB Titanium Grey | £1349.00 | Samsung Galaxy S25 Ultra 512GB Titanium Grey | equivalent to £1,370.00/mth over 1 mths | View More Info |
 Samsung Galaxy S25 Ultra 512GB Titanium Black | £1349.00 | Samsung Galaxy S25 Ultra 512GB Titanium Black | equivalent to £1,370.00/mth over 1 mths | View More Info |
 Honor Magic V3 512GB Black | £1459.00 | Honor Magic V3 512GB Black | equivalent to £1,480.00/mth over 1 mths | View More Info |
 Samsung Galaxy Z Fold7 512GB Blue Shadow | £1899.00 | Samsung Galaxy Z Fold7 512GB Blue Shadow | equivalent to £1,920.00/mth over 1 mths | View More Info |
 Samsung Galaxy Z Fold7 512GB Jetblack | £1899.00 | Samsung Galaxy Z Fold7 512GB Jetblack | equivalent to £1,920.00/mth over 1 mths | View More Info |
 Samsung Galaxy Z Fold7 512GB Silver Shadow | £1899.00 | Samsung Galaxy Z Fold7 512GB Silver Shadow | equivalent to £1,920.00/mth over 1 mths | View More Info |