I've been using 1Password for a couple of years now, on my mac and on my iphones, and even on my windows computer (though sybchronizing as an issue there) and I'm very happy with it.
In the past this same feature request has been made: Please add a category for SIM cards, with the next categories: Telephone number, SIMcard type, SIMcard number, SIMcard provider, PINcode (hidden), PUKcode (hidden).
I've put them in the passport category, but I need some 'hidden' fields.
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided