import Contacts

func isContactDeletable(contactIdentifier: String) -> Bool {
    let store = CNContactStore()
    do {
        if let contact = try store.unifiedContact(withIdentifier: contactIdentifier, keysToFetch: [CNContactIdentifierKey as CNKeyDescriptor]) {
            return contact.isDeletable
        }
    } catch {
        print("Error: \(error.localizedDescription)")
    }
    return false
}