https://www.signlwifi.com/blog Practical guides to measuring and improving WiFi performance at home with an iPhone. en-us Sat, 12 Sep 2026 12:00:00 GMT https://www.signlwifi.com/blog/how-to-find-wifi-dead-zones-with-iphone https://www.signlwifi.com/blog/how-to-find-wifi-dead-zones-with-iphone Sat, 12 Sep 2026 12:00:00 GMT Find WiFi dead zones with your iPhone by comparing measured download speed and latency room by room—and learn why ordinary apps cannot claim RSSI. WiFi troubleshooting