The main differences between SMS and RCS are character limit, rich media content capabilities and transmission methods. SMS has a strict character count of 160, does not support multimedia within messages and sends messages over a cellular network; in comparison, RCS has no character limit, support...
SMS text messages (and MMS) are not encrypted. This means that your texts can be viewed by carriers or the government and intercepted by hackers. SMS can also leak metadata or general information about the text. On the other hand, every message you send via iMessage isend-to-end encrypted...
Comparison between SD and DD under Non-Common Clock Scheme Following [20], we simplify the problem and assume that both the SD and DD integer ambiguities have been fixed. All SD observables are equal-weighted (let the weight be 1) and independent. By forming the SD, the satellite clock ...