Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Main Camera Modules 48 MP, f/1.8, 24mm (wide), 1/1.28", 1.22µm, dual pixel PDAF, sensor-shift OIS 48 MP, f/2.8, 100mm (periscope telephoto), 1/2.55", 0.7µm, PDAF ...

In “Wow, I feel old” news last week, Apple officially moved the original iPhone SE from the vintage to the obsolete list. That’s not just a nominal change; while vintage products can still access a ...