Beautiful UI is only the beginning. Real mobile apps need a reliable data layer.

Welcome to Video 18 of AI Mobile Engineer 2026 by The Techzeen.

Today we officially enter Phase 3: Production Data Layer & Authentication and start with REST API Engineering.

In this lecture, we understand how mobile apps communicate with servers and how to design data handling for real-world conditions.

What we cover:
* What is an API?
* HTTP Methods: GET, POST, PUT/PATCH, DELETE
* REST API architecture
* Fetch vs Axios
* Axios Interceptors
* Pagination
* Infinite Scroll
* Request Retry & Network Failures
* Offline Queue
* Handling large datasets without loading everything at once

The goal is simple:
Don't just connect your app to an API. Build a mobile app that can handle real-world data and unreliable networks.

Think → Prompt → Review → Debug → Test → Ship

Subscribe to The Techzeen to become a high-paying AI Cross-Platform Mobile App Engineer.

Website:
https://www.thetechzeen.com/

Complete Playlist:
https://www.youtube.com/playlist?list=PLIKgFOVIOd1Y

WhatsApp Community:
https://whatsapp.com/channel/0029VbDmJP617Emr7OAPtp1H

GitHub Lecture Files:
https://github.com/farzeen-ali/AI-Mob-Engineer-Concepts

#ReactNative #RESTAPI #ReactNativeAPI #Axios #FetchAPI #Pagination #InfiniteScroll #OfflineFirst #MobileAppDevelopment #Expo #AIMobileEngineer #ReactNative2026 #CursorAI #TheTechzeen