docs: add and update preview images

README.md

@@ -1,14 +1,19 @@
 <h1 align="center"><img src="android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png" height="100px" alt="Smart Link"/></h1>
 
-_<p align="center">A simple IoT Application</p>_
+_<p align="center">A simple IoT based Application</p>_
 
 <p align="center">
   <a href="https://github.com/mediocre9/smart-link/blob/main/LICENSE"><img src="https://img.shields.io/badge/license-MIT-blue.svg" alt="MIT"/></a>
 </p>
 
 ## Smart Link
 
-> Smart Link is an IoT application designed for remote control and management of various devices, including Arduino, HC-05/06, ESP32, and ESP8266 (Node-MCU). The app offers features such as Google authentication, user feedback, in-app update checker, and secure Bluetooth communication. It enables users to control robots via Arduino and provides fingerprint biometric authentication for secure locker access through ESP32 firmware.
+> An IoT application designed for remote control and management of various devices, including Arduino, HC-05/06, ESP32 or ESP8266 (Node-MCU). The app offers features such as Google authentication, user feedback, in-app update checker and Bluetooth communication. It enables users to control robots and does also provides fingerprint biometric authentication for secure locker access through ESP32 firmware.
+
+## Previews
+<p align="center">
+  <img src="previews/screen-previews.png" height="100%">
+</p>
 
 ## Features
 
@@ -21,10 +26,6 @@ _<p align="center">A simple IoT Application</p>_
 -   [x] Bluetooth control for serial communication with HC-05/06 modules on Arduino to control the robot.
 -   [x] Fingerprint biometric authentication to securely unlock lockers, communicating with ESP32.
 
-<p align="center">
-  <img src="previews/preview.jpeg" width="100%">
-</p>
-
 ## Architecture:
 
 <p align="center">