Apple uses Widevine and FairPlay DRM to manage streaming quality. If your older iOS 15 device is not explicitly whitelisted by Netflix for HD or HDR playback, the official app downscales your stream to 480p or 720p. Modified IPAs attempt to spoof your device ID, tricking the servers into delivering maximum bitrates and full 1080p or 4K streams. Bitrate Unlocking
For users on iOS 15.0 through 15.7, "extra quality" may refer to forcing Dolby Atmos or Spatial Audio on headphones that aren't officially supported by the standard app version. How to Install a Netflix IPA on iOS 15 netflix ipa ios 15 extra quality
Plug your iOS 15 device into your computer via a USB cable. Trust the computer on your device. Apple uses Widevine and FairPlay DRM to manage
Sourcing IPAs from unofficial websites or third-party app stores poses severe security risks to your iOS device. Bitrate Unlocking For users on iOS 15
Log into the Netflix website via a desktop browser, navigate to your Profile settings, and ensure that "Playback Settings" is set to "High" or "Ultra HD."