== Background
The reading list sync service created has a concept of a "Default" reading list, which an article can be saved to without being required to be added to a user-created reading list.
Android reading list users currently save articles to a specific user-created list; whilst iOS intends to allow both 'one-tap' quick saving which would save articles to the system 'default' list as well as the option to organize into other reading lists.
Notes:
- The name of the Default list is an ID string in the back-end, with a localized name shown to the user (iOS initially calling it "Saved")
- The default list cannot be renamed
- The default list cannot be deleted
=== Problem
Until such time as Android starts making use of a default reading list, it may be confusing for users to see it appear on their device.
== Proposed solution: All Android users see the default read-only bookmarks list
**Pros of this approach**
- Introduces the concept of a 'default' list could be beneficial to save the step of requiring users to create an initial list
- Users can take advantage of the (proposed) higher limit of articles for the default list
- Showing the default list on Android is not as jarring for cross-platform users
- Opens the door to potentially switching to the one-tap quick-saving model in future
===TO DO:
====PART A. Update workflow so ALL users (whether they choose to sync reading lists or not) will now see a 'Default list':
| Bottom sheet when save to list is tapped {F11961589} | Empty default list details screen {F11961593} | My lists screen with overflow on default list {F11961610} | overflow on default list details screen {F11973163}
// Redline versions also available on the [[ https://zpl.io/bAAm7nq | Android Zeplin board ]], tagged with 'Reading list sync' //
**Steps to QA**
# As a new user with no user-created reading lists, tap to add an article to a reading list. It is *expected* that a bottom sheet will be shown with an option to save the article to the already existing 'Saved' default list, or to create a new reading list. (NOTE: The first-time experience is covered in the separate first time user education task T183441)
# Login and go to settings and opt-in to synced reading lists. It is **expected** that the 'Saved' default reading list is the synced as the default list by the reading list service
# Go to the 'My lists screen' and select the overflow of the 'Saved' default list list item. It is **expected** that the overflow actions do NOT include the option to delete or rename the list.
# Tap to view the 'Saved' reading list, and then tap on the overflow in this screen. It is also **expected** the overflow actions do NOT include the option to delete or rename the list.
====PART B. Ensure that the Default list is with the real 'default' list when a user decides to turn on syncing
**Steps to QA**
# While NOT OPTED-IN to synced reading lists, add some articles to the default list
# Login and go to settings and opt-in to synced reading lists. It is **expected** that the 'Saved' default reading list is the synced as the default list by the reading list service
====PART C. Update messaging in existing flows
Separated into sub-tasks:
* {T183434}
* {T183441}