The Celkon S1 is an entry-level smartphone with basic features. Below are its specifications and a summary of customer reviews:

Specifications:

• Display: 4.0-inch WVGA display
• Processor: 1.3GHz dual-core processor
• RAM: 512MB
• Storage: 4GB internal (expandable via microSD)
• Camera: 5MP rear, 0.3MP front
• Battery: 1500mAh
• OS: Android 4.4 (KitKat)
• Connectivity: 3G, Wi-Fi, Bluetooth, GPS
• Dual SIM: Yes

Summary of Customer Reviews:

• Pros:

  • Affordable price for basic usage.
  • Compact and lightweight design.
  • Decent battery life for light usage.
  • Expandable storage option.

• Cons:

  • Low RAM causes lag with multiple apps.
  • Camera quality is poor in low light.
  • Outdated Android version with no updates.
  • Build quality feels cheap.

Overall, the Celkon S1 is suitable for users needing a simple, budget phone for calls and messaging but struggles with performance-heavy tasks.