PAYG, without a goodybag,
is fine if you don't use your phone very much,
but please don't use any internet on the phone,
or your cash will evaporate!
Depending on how you use your phone,
keep tabs on your calls, at 25p a minute.
If you use more than 24 minutes in a month,
which could be quite easy to do,
you will be much better off with the smallest goodybag
at £6 a month for unlimited calls.