How to switch bolt ons...

[conneh]

Looking to change from free o2 to o2 calls to unlimited texts, however i can't seem to find out how i go about doing this.

Cany anyone help?

I understand i can do it every 90 days, just not sure how!

 

[Tom]

phone o2

 

[wezzel98765]

ring 202

it is free to call them