I bought two AT&T Airties Air 4921 Smart Wi-Fi Extenders. I needed more wifi for a family of 5 adults working from home. I felt the solution was worth the extra cost because it integrated with my AT&T Wi-Fi gateway and offered mesh networking. Unfortunately, these extension cords are so flimsy that they are only effective in very small homes or apartments (1500 square feet). After several hours of trying to find a good spot for the extender, I settled on a very small improvement in Wi-Fi coverage. I returned the unopened extension cord and bought two TP-Link WiFi routers. I currently have three different Wi-Fi networks in my house. Having three networks isn't as convenient as a single mesh network, but TP-Link's wireless routers (TP-Link N450 Wi-Fi Router - Wireless Internet Router for Home (TL-WR940N)) were much easier to set up and delivered great out of the box WiFi -Fi coverage -Fi. WiFi routers cost $25 each and are cheaper than extenders. Avoid AT&T expanders.
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