Hi@SanjayDa,

Thank you for contacting our community.

Typically, there are 3 types of Wi-Fi boosters in the market, meeting various network demands.
    1. Range extenders (repeaters), with powerful amplifiers and antennas, can boost an existing WiFi network by receiving the wireless signals from your router and repeating them, extending signal coverage by up to twice the range.
Note: We recommend that you purchase and use an extender with the same Wi-Fi protocol as your router.
    2. Powerline Adapters (PLC), different from range extenders and Mesh WiFi, powerline adapters transmit data and extend your home network coverage using existing electrical wiring. With powerline adapters, thick walls and ceilings aren’t a problem anymore.
    3. Mesh Wi-Fi, If you’ve added multiple network nodes but are still encountering WiFi dead zones while walking around your home, you should consider Mesh WiFi solutions. These are built to eliminate dead zones and provide uninterrupted WiFi throughout your home. A whole-home Mesh network system secures network speed and reliability in every corner of your home, no matter whether you are in the basement or on the rooftop, you can enjoy stable WiFi with seamless roaming.
For more details, please refer to this article: How to Choose the Best WiFi Booster - 12 Recommended TP-Link WiFi Boosters

  @SanjayDa 

For 750 square feet apartment C6 v4 should cover the whole area if it's positioned properly - details.