Portable Mode refers to a feature or setting on certain devices, software applications or operating systems that allows you to use them while being disconnected from a power source. This means that you can take your device with you and continue using it without needing an electrical outlet nearby.
In the context of smartphones, portable mode typically refers to a setting that enables users to keep their phone on even when the battery is completely drained or dead. In this mode, the phone will still function as long as it's connected to another power source such as an external battery pack or computer via USB cable.
Overall, Portable Mode provides convenience and flexibility for users who need to use their devices while on-the-go, without being tethered to a wall outlet.