UC Browser's published Android flow changes the search engine from the search icon beside the URL bar.

1. Open UC Browser.
2. Tap the URL bar at the top.
3. Tap the search engine icon on the left side of the bar.
4. If Queye appears, select it.

If Queye is not listed, UC Browser on Android does not currently provide a manual field for a custom search URL.

You can also install the Queye Android app if you want a direct fallback.