I'm eagerly awaiting the Pocophone F1 release here in Uruguay.
http://www.claytonchristensen.com/key-concepts/
Low-end disrupters (think steel minimills and discount retailers) come in at the bottom of the market and take hold within an existing value network before moving upmarket and attacking that stratum
But, as a phone, I think low end disruptors are here, and I can't understand why people would pay 3 or 4 times as much as needed for a phone - other than that they have the money, and they want the phones for reasons unrelated to performance (aesthetics, perceived quality, privacy, etc.).
Xiaomi in particular is trying to erode that particular Apple barrier, their flagships are already objects of desire in India, China and in my country (Uruguay).