Some users reflect the upgrade iOS8 after the WiFi signal difference, flash back

"TechWeb Report" iOS8 official version of the release, some users reflect the upgrade after the problem of WiFi connectivity, while the battery is shortened, part of the application of flash-back. A user reports that Wi-Fi continues to decline after the ipad Air, the ipad mini (Retina Display), and the iphone 5s upgrade system. Another user complained that the device's Wi-Fi connection was intermittent. There are also users reporting iOS8 updates, the device's Wi-Fi speed as slow as a snail. A user and Apple support customer contact after the report: I upgrade iOS8 often encountered some application flash. After talking to Apple online support, they advised me to revert to the original state, and as I did, the problem seems to have improved. But after a few minutes of testing, I recovered the backup and the problem resumed. Of course, almost every time a large version of the update will be encountered after the familiar battery to shorten the problem will not be less. A iOS8 user said the battery was running at an unusually fast cost after an iphone 5 user claimed to have spent about 5 hours (lightly) from 100% to the use of electricity. After a problem, we recommend that you try to restore or erase the content and settings, and then restore the backup to see if the problem can be resolved. If the problem continues to occur, please report to Apple Technical support or contact a genius bar technical expert. The question remains to be answered by Apple, which foreign media CNET has asked Apple to comment on. Did you get the WiFi connection on and off after you upgraded iOS8?