Use APKPure App
Get Telegram File Downloader - Download Manager old version APK for Android
Download Telegram Files @ 17mbps
• Download Telegram Files Faster
• Play videos while downloading.
• Best Downloader Application.
• Pause and resume downloads.
• Power Management and battery control.
• accelerated downloading by using multithreading
Source code
https://github.com/TachibanaGeneralLaboratories/download-navi