Apple will be using a 5nm+ A15 SoC for the 2021 iPhones, again sourced from manufacturer TSMC. Apple always has deep-pockets when it comes to working with TSMC so they can be the first to make use of their newest manufacturing techniques, but reportedly this won't be enough to push TSMC to hurry up on their long-awaited 3nm chips until perhaps next year when Apple will likely introduce the A16 SoC.5nm is generally 15% faster with 30% less power than 7nm, which is the manufacturing process used for the Apple A14 SoC.If that's too much tech talk for you just know that this will mean faster performance, better graphics, and all the usual general performance enhancements that come with new multi-core system-on-chips.