Oppo has several smartphones launched in India and they have one thing in common that is all of them lack security certification named Widevine L1 which enable support for HD or above resolution streaming on Netflix, Amazon Prime, and other similar apps.
It is basically impossible to watch HD content on Netflix, Amazon and other apps on any of Oppo devices be it their F9 Pro or their premium Oppo Find X.
As this certification is provided for free so there is no reason for cost-cutting but another factor compelling Oppo not to certify their smartphones with L1.
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It is already known that Chinese vendors use their brands to snoop data of users and to be L1 certified their needs to be Trusted Environment meaning no app can snoop the other app while it is in use to prevent piracy but if a Trusted Environment is created then Oppo won’t be able to snoop data on any of the third party app.
Therefore Oppo, Vivo, and Xiaomi all have several devices on the market but none of them is Widevine L1 certified. So stop drooling over Chinese smartphones as even Samsung Galaxy J4+ which cost less than ₹15000 comes with Widevine L1 certification compared to Redmi’s and Oppo, Vivo smartphones.