You can "buy" a digital copy in HD (720p or 1080p). Once purchased, you own the license and can download it to any compatible device.
When you search for direct download links or "free movie" sites, you often run into several risks:
A reliable option for Android users to download and store the film locally on their devices. What Makes the Movie Worth the Watch? 500 Days Of Summer Download 720p
However, before you search for a link on a random torrent site, it is important to consider the best (and safest) ways to watch this 2009 hit. Why 720p is the "Sweet Spot" for This Film
Many sites promising a "720p download" are actually fronts for malicious software. You can "buy" a digital copy in HD (720p or 1080p)
Depending on your region, the film is often available to stream here. Their mobile apps allow you to download the movie in HD to watch during flights or commutes.
Known for having the highest bitrate for HD downloads, Apple is a great choice for those who want the best possible 720p/1080p quality. What Makes the Movie Worth the Watch
Directed by Marc Webb, (500) Days of Summer isn't your typical romantic comedy. It’s a "story about boy meets girl," but as the narrator warns, "it is not a love story."
Often, these files are "cams" (recorded in a theater) or highly compressed versions that look blurry and pixelated.