Dual 4G VoLTE

This indicates that the device supports Voice over LTE (VoLTE) on both SIM cards. VoLTE allows for higher-quality voice calls over 4G networks.

Hotspot Tethering

This feature allows the device to act as a mobile hotspot, enabling other devices (like laptops or tablets) to connect to the internet via the device's cellular data connection.

LetsChat

 "LetsChat" could refer to a messaging app or service that might come pre-installed on the device. It's common for smartphones to include messaging apps.

Boomplay

Boomplay is a music streaming and downloading app that provides access to a vast library of songs. It's possible that this app comes pre-installed or is promoted on the device.

2500 mAh Battery

This indicates the capacity of the device's battery. A 2500mAh battery capacity can vary in terms of how long it will power a device depending on factors like device efficiency, screen size, and usage patterns.