According to my My o2 account info, you can buy small amounts of data (as follows). You don't get much for your money though. EE are far cheaper and have all kinds of 1 day, 7 day, and 30 day PAYG add-on's and packs.
Pay As You Go Bolt Ons
If you need more data, just add one of our Pay As You Go Bolt Ons. You can choose from monthly or snacking one-off Bolt Ons. To add a Bolt On, just sign in to My O2.
Monthly Data Bolt Ons
All Rounder:
- £5 a month for 500MB of data and 20 picture messages.
- To get the All Rounder Bolt On, go to My O2, call 2202 free from your O2 phone or text ROUND to 21300, for free.
The Ultimate:
- £12 a month for 3GB of data
- To get The Ultimate Bolt On, go to My O2, call 2202 free from your O2 phone or text ULTIMATE to 21300, for free.
Snacking One Off Data Bolt Ons
Web Daily:
- £1 one off payment for 50MB of data to use today.
- To get the Web Daily Bolt On, call 2202 free from your O2 phone, or text WEBDAILY to 21300 for free.
Snack 500MB Data:
- £5 one off payment for 500MB of data to use within 31 days.
- To get the Snack 500MB Data Bolt On, go to My O2, or call 2202 from your O2 phone or text SNACK500 to 21300, for free.
The Ultimate One Off:
- £12 one off payment for 3GB of data to use within 31 days.
- To get The Ultimate One Off Bolt On, go to My O2, call 2202 free from your O2 phone or text ULTIMATEONE to 21300, for free.
