Why? Because 3GP files are light, consume very little data, and take up minimal storage space. The phrase "Single Part" is critical here—it saves users from the headache of downloading split files (Part 1, Part 2, etc.) that require external software to join.
Some popular Telugu mobile movies that you might want to download include: Telugu 3gp Mobile Movies Download In Single Part
In the early days of mobile internet, many file-sharing and download sites split full-length movies into multiple parts (e.g., Part 1, Part 2) to manage download stability and file size limits. A became highly sought after because: Why? Because 3GP files are light