I just got a new phone. On the old phone, Firefox syncing was was not perfect, but better than on the new phone. On the old phone, 75 tabs were imported. On the new one, none. On the old phone, 5 addons were imported. On the new one, none. However, I installed Ublock on the new phone, and when i clicked my Firefox Account toolbar button on the desktop browser, it listed Ublock at the bottom of the dropdown menu, which I assume meant that it acknowledged it was just installed on Firefox Android. Bookmarks imported on both. History was imported on both. No logins imported on either Firefox or Firefox Lockwise. If addresses were synced, I don't know where to find them. Also, please define the phrase "Open Tabs"