README.md: Update screenshots

Author: adamff-dev

README.md

@@ -7,10 +7,10 @@ Call Blocker App is a Kotlin-based application designed to help you manage and b
 Here are some screenshots of the Call Blocker App in action:
 
 <div style="display: flex; gap: 10px;">
-  <img src="https://i.imgur.com/YwmFXBh.jpeg" alt="Main screen" width="300">  
-  <img src="https://i.imgur.com/2ezJn7k.jpeg" alt="Phone number options" width="300">  
-  <img src="https://i.imgur.com/hvniKjX.jpeg" alt="Settings" width="300">  
-  <img src="https://i.imgur.com/tWkV5Vk.jpeg" alt="More settings" width="300">
+  <img src="https://i.imgur.com/g8Ie7zU.png" alt="Main screen" width="300">  
+  <img src="https://i.imgur.com/QnbalOh.png" alt="Phone number options" width="300">  
+  <img src="https://i.imgur.com/QeC3Kg8.png" alt="Settings" width="300">  
+  <img src="https://i.imgur.com/I4tDolO.png" alt="More settings" width="300">
 </div>
 
 ## Features