What it does

The contact page shows everything at once — numbers, emails, company, address, birthdays, notes, ringtone — with call and message on every line
That person's call history sits on the same page: every call, its direction, the time and how long it lasted, with one-tap redial
A–Z rail down the edge of the list, so 400 contacts are one drag away
Dual SIM done in one tap: the chip on the keypad toggles between your cards and the call goes out on that one
It answers and shows calls itself — set it as your phone app and you get the call screen, the missed-call notification and the call-back button

No internet permission. It reads the phone's own contacts and call log, places the call on the SIM you picked, and holds no socket that could carry any of it away.

What it can reach

This is the whole list. Android prints the same thing under Settings › Apps › Permissions once the app is on your phone, and it was not written by us — check one against the other.

Contacts	The list you are looking at; it is read from the phone's own contact store, not a copy of ours
Call log	The history under each contact, and the Recents tab
Make and answer calls	What a phone app does; the call screen is the app's own
Phone state and SIM	Which of your two cards carries the call you are placing
Notifications	Missed calls, and the call you are on
Internet	Absent. The permission does not exist in this app

Android 11 and up. Bought once, yours to keep: no account to make, no subscription, and no upgrade screen inside the app — the key you buy unlocks it and every version after it.

Phone