
Apple is rumored to be using 'Border Reduction Structure' technology to achieve the reduced bezel sizes in the iPhone 16 Pro models4. This technology is said to allow for a significant reduction in bezel size, potentially up to 40%, without substantially increasing the overall size of the handsets. The iPhone 16 Pro and iPhone 16 Pro Max are expected to come with 6.3-inch and 6.9-inch displays, respectively, which would be an increase in panel size from previous models. The bezels of the iPhone 16 Pro and iPhone 16 Pro Max are rumored to measure as low as 1.15mm and 1.20mm, respectively.

The iPhone 16 Pro and iPhone 16 Pro Max are rumored to have up to a 40 percent reduction in bezel size compared to their predecessors, the iPhone 15 Pro and iPhone 15 Pro Max2. This reduction is expected to give both flagships an impressive 'screen to body' ratio, without substantially increasing the footprint of the handsets.

Apple might consider abandoning the 'low-injection pressure over-molding' (LIPO) technology in favor of the 'Border Reduction Structure' (BRS) technology for a few reasons.
Improved Results: BRS technology might be capable of delivering better results in terms of bezel reduction compared to LIPO. As the rumor suggests, BRS could help achieve a bezel measurement as low as 1.15mm for the iPhone 16 Pro Max and 1.20mm for the iPhone 16 Pro. This could result in a more impressive screen-to-body ratio, making the devices more visually appealing.
Better Heat Dissipation: BRS technology may offer improved heat dissipation compared to LIPO. As per the report, Apple's previous attempts to apply BRS were curtailed due to heat issues. However, recent improvements in heat dissipation technology might have made BRS a more viable option.
Increased Display Size: BRS technology could allow Apple to increase the display size of its iPhone 16 Pro models without significantly increasing the footprint of the devices. This would make the phones easier to carry around and use comfortably.
Competitive Advantage: Adopting BRS technology could give Apple a competitive edge in the smartphone market by offering consumers a device with an even more immersive display experience.
It's important to note that these are speculative reasons, as Apple hasn't officially confirmed any details about its future iPhone models or the technologies it plans to use.