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Starting with iPhone 8, the back glass is laser-welded to the frame.
Incell LCD: Cost-effective, decent clarity, thinner profile, weaker sunlight visibility
Soft OLED: Closer to Apple’s original OLED performance, better brightness and contrast, better impact resistance than hard OLED
Service Pack: OEM panels (often pulled or refurbished), original digitizer and IC, premium quality — often used in professional refurb setups
From iPhone Xr onward, Apple uses secure pairing between the logic board and the battery’s BMS (Battery Management System). Unless the original BMS is transferred or data cloned, the system will flag it as a non-genuine part and disable Battery Health stats.
BMS Transfer: Physically transplant the original battery’s chip to the new cell
IC Programming: Clone original data using tools like JC-V1SE, Qianli iCopy Plus, or BatReader
This allows Battery Health to display and suppresses the warning, though the device still won’t pass Apple’s internal diagnostic scan.