Microsoft Lumia 540 Dual SIM Specifications:

• Display: 5.0-inch IPS LCD, 720 x 1280 resolution (~294 ppi)
• Processor: Qualcomm Snapdragon 200 (Quad-core 1.2 GHz Cortex-A7)
• RAM: 1GB
• Storage: 8GB internal, expandable via microSD (up to 128GB)
• Rear Camera: 8MP, autofocus, LED flash
• Front Camera: 5MP, wide-angle lens
• OS: Windows Phone 8.1 (upgradable to Windows 10 Mobile)
• Battery: 2200 mAh (removable)
• Connectivity: Dual SIM (Micro-SIM), 3G, Wi-Fi, Bluetooth 4.0, GPS
• Colors: Orange, white, black, blue, gray

Summary of Customer Reviews:

• Pros:

  • Affordable price with decent build quality.
  • Bright and clear display for its price range.
  • Good front camera for selfies and video calls.
  • Smooth performance for basic tasks like calls, messaging, and social media.
  • Removable battery and expandable storage.

• Cons:

  • Limited app availability due to Windows OS.
  • Struggles with multitasking due to only 1GB RAM.
  • Battery life could be better with heavy usage.
  • Camera performance in low light is mediocre.
  • No 4G LTE support.

Overall, the Lumia 540 was considered a budget-friendly Windows phone with solid basics but held back by platform limitations and modest hardware.