One of PhoneGap's key strengths is its extensive plugin ecosystem. Plugins are add-ons that provide additional functionalities by exposing more native features to the JavaScript code. For instance, plugins can enable push notifications, in-app purchases, access to the device’s GPS, and more. Developers can also create custom plugins to extend the capabilities of their applications. To master these features and build robust mobile applications, enrolling in PhoneGap Training in Chennai, offered by FITA Academy can provide developers with the necessary skills and hands-on experience.