AP set - a set that imported from other region, as if u have issue with the phone warranty towards local service center will not be accepted however you are still good to go back to the same shop you bought the phone and they may provide repair service or send back to the respective country for repair. of cuz you need to bear the cost of shipping, etc.

local set lies everything here in msia and service center will take full responsibility during your warranty period, of cuz what we mention here is excluding the physical damage or water damage on the phone.

hmm,.... hope this clarify some points for u.

this is my understanding, those who knows better can also correct me or add in.

play store runs on the same database, on the same platform. so basically they are the same

unlike apple store, the database is categorized and certain apps can be purchased in this region but not in other region, etc.

I thought in China all use Weibo?