We all know that computers have 32-bit and 64-bit points, but in fact, mobile apps also have 32-bit and 64-bit points, and Android phones are expected to completely cancel 32-bit apps in 2023.
So what's better than a 64-bit APP over a 32-bit app?
Take this year's mainstream flagship chips Snapdragon 8 gen1 and Tianji 9000 as an example, both of which use ARM's latest generation of Cortex-X2 super core, Cortex-A710 large core and Cortex-A510 small core CPU architecture solutions.
Among them, only the Cortex-A710 large core can be compatible with 32-bit applications, when the mobile phone is running a 32-bit application, it can only be limited to the Cortex-A710 large core, and the actual application execution efficiency will be greatly reduced, specific to the performance on the mobile phone is slower and the power consumption is serious.
The 64-bit application has faster running speed and better compatibility on this architecture, and there is also lower latency data throughput, better memory scheduling and use, and the improvement of user experience is obvious.
As early as September 2013, when the iPhone 5S was released, it was equipped with a 64-bit A7 bionic processor.
The Apple A7 is the first commercial 64-bit ARM architecture SoC and the first 64-bit processor for a smartphone, iOS 7 is the first mobile operating system compatible with a 64-bit processor, and the iPhone 5S is the first smartphone to feature a 64-bit processor.
Apple's approach was under attack by other industries at the time, when Anand Chandrasekher, qualcomm's senior vice president and chief marketing officer, said that Apple's 64-bit processor was engaged in marketing, and consumers benefited from it to zero.
However, Apple did not stop the pace of 64-bit because of the dissatisfaction of others, and began to fully use the road of 64-bit, and within a few years, starting on February 1, 2015, Apple iOS required that the listed applications must support 64-bit, when Apple gave the applications that had been listed four months to let them complete the migration.
In 2017, Apple directly swung the knife down, and immediately decided to no longer support any 32-bit application.
Apple can implement these decisions so quickly thanks to the closed system, Apple iOS to 64-bit transition is very smooth, and Android because it is too fragmented, the freedom of application distribution, has not been so smooth, dare not rush to move the knife.
It wasn't until 2021 that ARM finally announced that from 2023 onwards, Arm-architecture CPU cores will enforce 64-bit and no 32-bit compatibility mode.
Do you think it should be compatible with 32-bit?