To clear search history on iPhone, the process varies slightly depending on the browser/app:

Safari: Go to Settings > Safari > Clear History and Website Data, then choose a timeframe.

Chrome: Open Chrome, tap the three dots (More) > History > Clear Browse Data, select your desired data and time ...

The Dell MS5320W mouse is compatible with the Dell Universal Pairing Receiver (WR221) for its 2.4 GHz wireless connection. It also supports Bluetooth 5.0.