#####Background
Context from: T305319
> Chinese Wikipedia has 9 variants. Among all of them, zh, zh-hans, zh-hant should not be served to end users because they have incomplete (or no) conversion.
>
> Status quo
> The Android app currently ships 8 variants, expect zh.
> The iOS apps ships these following variants: zh-hans, zh-sg, zh-my, zh-tw, zh-hk, zh-mo.
>
> Solution
> The Android app should have zh-hans and zh-hant removed and prompt user to choose between other variants.
#####Requirements:
- Create a prompt that can be shown to users who currently have generic variants of Chinese (zh-hans and zh-hant) as their primary language in the App, asking them to select a regional variant from a list for a better experience
- List of languages to select should have language name in that language, and translation (current behavior is that the translation is for whichever language is your primary language in the App, for Chinese they sometimes appear in English though)
**Open questions:**
- Should users be forced into a selection or can they ignore the dialog?
- Confirm list that should be offered to select from
- Chinese (China)
- Chinese (Hong Kong) zh-hk
- Chinese (Macau)
- Chinese (Malaysia)
- Chinese (Singapore) zh-sg
- Chinese (Taiwan) zh-tw
- Wu Chinese (Simplified)
- Wu Chinese (Traditional)
- Hakka Chinese