[OOBE] UI language should follow SIM card preferred language

[Martti Piirainen]

Test steps:
1. Insert a SIM card with preferred language Finnish
2. Boot the phone
Expected result: UI language is Finnish
Actual result: UI language is English. Finnish or other languages can be manually selected from the settings UI.

The SIM card's list of preferred languages is correctly given by oFono:
dbus-send --print-reply --system --dest=org.ofono /ril_0 org.ofono.SimManager.GetProperties

  dict entry(
     string "PreferredLanguages"
     variant array [
           string "fi"
           string "sv"
           string "en"
        ]
  )

A technical reference is ETSI TS 102 221, section 13.3 EF_PL (Preferred Languages). But this is also a business requirement for OEM and operator partners.

[Sebastien Bacher (seb128)]

Thank you for your bug report. We might need input from design there. The first boot is going to have a wizard, we can preselect the language if there is a sim, but what should be done in those cases

- there is no sim on first boot, the user manually select a language, then later on adds a SIM that has a different preferred language ... should the user choice still be respected?

- the phone has 2 SIMs with different preferred languages

- the user is travelling and buying a pre-paid SIM to use for a week, should his phone language automatically change? should the phone prompt asking if the setting should be changed?

[Matthew Paul Thomas (mpt)]

This behavior is specifically mentioned in a draft I've seen of a spec for the first-run setup. But that setup is not part of System Settings any more, it's part of Unity.

[Albert Astals Cid (aacid)]

unity8 waiting for design -> Incomplete

[Andreea Pirvu (andreea-pirvu)]

This behaviour is described in the new OOBE design in the Language screen chapter (page 8).
You can see the new spec here https://docs.google.com/a/canonical.com/document/d/1pZ-Ro--2eaRzjZKNRoYAeDvQHMkCuyvVuPFWFQfPW4s/edit?usp=sharing

[Andreea Pirvu (andreea-pirvu)]

1. If no SIM inserted - the default language is English (US)
2. If 2 SIM cards inserted - the language will default on the SIM 1 language
3. If the user selects a language in the OOBE wizard, if he will change later the SIM with one that has a different language, the suer will have to change the language manually in System Settings.