If you approach it simply as an action-science fiction film prioritizing the fictional elements, I’d say it's not terrible. The beginning follows a predictable pattern: a group of politicians initiate a mess by dismissing the one person capable of successfully managing the climate control project. Adding to the trouble, the entire endeavor is about to be handed over to “the international community,” which is generally a formula for problems. Naturally, Hollywood operates within its characteristic fantasy realm, so they’ve included a stereotypical villain with appropriate political leanings and an absurd, catastrophic scheme—and we're ready to go. Setting that aside, the movie becomes a reasonably enjoyable science fiction disaster thriller. The special effects are acceptable, and the film maintains a good pace. Since the purpose of this movie is action and visual effects, the plot and performances are sufficient, nothing more. However, as frequently happens, the writer isn’t particularly imaginative. This satellite network that serves as the basis for the story stretches believability even within the bounds of science fiction. Beyond the sheer implausibility of attempting to cover the planet with a physically connected satellite network, the feats these satellites accomplish are so unrealistic that it's frustrating. What is powering them? Anti-matter, black holes? This could have been handled much better. Then there’s the self-destruct sequence near the end. What kind of destruction blows up a few minor components for dramatic effect and then pauses to allow characters to run around for thirty minutes? Either the writer lacks common sense or believes the audience is equally naive. Despite those irritating aspects, as someone interested in science fiction and fantasy, I found it fairly entertaining.

Source on TMDB