1. How can I modify the default search engine in Opera Mini?

Navigate to the Settings within the Opera Mini app, then proceed to the Search section where you can select your preferred search engine from the available options or even add a new one.

2. Can I store web pages for offline reading with Opera Mini?

Absolutely, simply tap on the download icon while browsing to save content. Access this saved material anytime you need, even without an internet connection.

3. Does Opera Mini include an ad-blocking capability?

Yes, it does. To activate the Ad-blocker, head over to the Privacy & Security settings within the app, then switch on the option to block advertisements.

4. Can I synchronize my bookmarks across multiple devices with Opera Mini?

Certainly, log into the same account on all devices equipped with the Opera Mini app. Then, proceed to the Bookmarks menu and choose 'Sync Bookmarks' to share your bookmarks seamlessly across devices.