Quick iPhone 2G question

[Deleted member 651465]

I have an old iPhone 2G (original) can any O2 SIM be used without any jailbreaking / hacking?

Want to update it to 3.0 using a PAYG SIM

 

[Phemo]

Any o2 sim should work fine.

 

[Deleted member 651465]

Any o2 sim should work fine.

Aye, thanks for the confirmation.

I haven't messed with a 2G in ages so I was a little unsure