A community of enthusiasts has archived thousands of old .xap files (Windows Phone app packages). You can attempt to find the Opera Mini .xap file (version 8.0 or 8.1) from sites like:
How to proceed:
Warning: This method is for advanced users. Most of these XAP files were signed with expired certificates, so your phone may refuse to install them unless you roll back the system date.
Opera Mini for Windows Phone 8 is effectively obsolete and unavailable for safe, official download. Users seeking a secure browsing experience should migrate to a supported operating system.
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For Windows Phone 8.1 users, the official version is Opera Mini 9.1.0.232, released in 2016. While the Windows Phone Store is no longer active, historically this browser was the go-to alternative for users needing extreme data efficiency on Microsoft's mobile platform. Key Features for Windows Phone
The Windows Phone version was specifically designed to provide a "native" look and feel that matched the OS tile-based interface.
Extreme Data Savings: Uses proxy-based compression to reduce web data by up to 90%. This significantly speeds up loading on 2G or 3G networks.
Customisable Speed Dial: Features a home screen with square tiles for your favorite sites, which you can drag, drop, and group into folders. opera mini for windows phone 8 download
Offline Reading: A "Saved Pages" feature allows you to download entire articles while connected and read them later without using any data.
Native Download Manager: Gives you control over where files are saved on the phone's storage and allows you to pause or resume downloads.
Visual Tab Management: A dedicated tab selector lets you see open pages as thumbnails for easier switching.
Usage Monitoring: Provides a live data savings graph showing daily, weekly, or monthly consumption. Performance and Compatibility Notes A community of enthusiasts has archived thousands of old
Limited Interactivity: Because pages are pre-rendered on Opera's servers to save data, complex interactive sites using heavy JavaScript may not work properly.
Search Limitations: The default search engine is Google and typically cannot be changed to Bing, though shortcuts for Amazon, eBay, and Wikipedia are available.
No Default Status: Due to OS restrictions, you cannot set Opera Mini as the system's default browser; links from other apps will still open in Internet Explorer. How to Download (Current Status)
Since the Windows Phone Store has been discontinued, you can no longer download the app through standard official channels. Users typically have to look for archived .xap installation files on enthusiast forums or archives like the Opera FTP archive, though side-loading on Windows Phone 8 requires a developer-unlocked device. Download the Opera browser for computer, phone and tablet How to proceed:
Opera Mini was once available for Windows Phone 8 via the official Microsoft Store. However, Microsoft officially ended support for Windows Phone 8 on January 12, 2016, and for Windows Phone 8.1 on July 11, 2017. Consequently, Opera Software has discontinued development, updates, and direct distribution for the platform. Direct download from official sources is no longer possible.