User Activity

If I actually use O2 switch up that's in my contract and swap my current phone for a new one, will that involve another new hard search on my credit file?
Hi all I joined O2 last week and selected Amazon prime as my extra which I redeemed on my O2 the same day and it's all working fine with the Amazon prime but on my o2 page it is still saying "You must activate your extra before you can use it" and wh...