Apple is also famous for rarely relying too much on a single supplier, with a history of screen providers and components being very diverse. Whenever possible, they build and design their own components in the device like they did CPU and GPU recently.
These post-scenes changes do not generally affect the end-users. We can still expect LTE faster on the new iPhone even if the chip vendor is Intel or Qualcomm. That will be a necessary step to catch up with Samsung Galaxy S9 and their Exynos 9 chip, which also promises faster mobile network connectivity.
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