Quick verdict
Call of Duty: Mobile and PUBG MOBILE both sit at the top of the Action game charts on Google Play, but they take very different approaches to the same job.
Call of Duty: Mobile, built by Activision Publishing, Inc., focuses on iconic cod multiplayer maps and battle royale on mobile. PUBG MOBILE from Level Infinite instead leans into 100-player battle royale with realistic gunplay and vehicles. The two products are similar enough that comparing them feature-by-feature, rather than spec-by-spec, gives you a clearer answer.
This guide breaks down what each game does best, the use-cases each was designed for, a clean pros & cons matrix, and three high-intent FAQs people search before downloading. Both are free to install from the Play Store, so the real cost is your attention and habit — pick the one whose workflow matches yours.