In case of last weakness of WiFi WPA2, everybody have to check updates on all devices with WiFi. Phones, tablets, laptops, smart etc.. This is just short video for my personal use.
This video show us, how to check updates on phone, you must turn-on data of course, or connect to any WiFi network (better wifi, if you have to download any update). There is second way how to check it, by computer, but check right onphone is much better.