Using 3d animations can greatly improve smoothness and overall performance on (older) phones, because they trigger the use of the GPU chip when available.
Relying on 3D transforms is an unreliable hack and it's now widely considered a bad practice. If you want to force hardware acceleration, you should use the will-change property instead.
Using 3d animations can greatly improve smoothness and overall performance on (older) phones, because they trigger the use of the GPU chip when available.