A little over a week ago, Apple began rolling out iOS 10.3 beta 4 to both developers and public beta testers. Now, the company is beginning to see both parties with the fifth build in the series, something that likely includes just bug fixes and builds on top of already-introduced features like Find My AirPods.
To install the latest iOS 10.3 beta on your registered device, head over to Settings > General > Software Update. Tap “Download and install” next to the iOS 10.3 Beta 5 listing and you’ll be good to go. I recommend jumping on a Wi-Fi network first alongside plugging in your device beforehand as a) you don’t want data overcharges on your bill and b) you don’t want your phone or tablet to die during the installation process.