Setup a new DSL residential modem yesterday, and was getting 512Kbps down with 70ms and 0% dropped. Connected 2 smart phones and still working great. The 3rd phone is a LG V30, and when it connects the DSL drops 35%+ packets and has 3000ms latency. As soon as I disconnect the wireless at that phone everything is fine again. I can repeat this with 100% confidence. On the LG V30, I installed Norton Mobile security and scanned the apps = No problems found. The DSL is unusable for viewing websites or downloads while the LG V30 is connected.
What is the best way to determine the cause on the Android phone? Do Android updates download automatically in the background when connected to WiFi?