iPad Pro 9.7 constantly drops WiFi
I'm desperately looking for some help, before returning my second brand new iPad Pro and going back to my iPad Air 2. My iPad Pro 9.7 simply refuses to maintain a consistent WiFi connection. I have other Apple devices in my home, including an iPad Air 2, iPad Mini 4, iMac 5K, MBP Retina 15 and two Apple TVs. None of my other devices have any connectivity issues whatsoever. For my wireless network, I am using the newest Apple Airport Extreme AC.
I've contacted AppleCare telephone support, spending a combined 4-5 hours with different technicians. Sadly their advice was to return my iPad Pro. This issue is a regular problem. The iPad Pro drops the WiFi connection every 30 seconds to 1 minute, which is most noticeable using FaceBook Messenger--it constantly drops and reconnects. I'm just stumped on this one. I thought Apple Care support would want to run a diagnostic or other tool as this problem is consistent and would be easily observable by such tools. Unfortunately, the only suggestion was to return it. This is the first time I've ever personally had Apple Care support fail to resolve a serious issue, leaving me with no path forward. I returned the first iPad Pro I bought from Apple. The second new iPad Pro I purchased from Costco and have the same issue. I suppose an argument could be made that it's my wireless network that is the issue as two consecutive new iPad Pros have had the same issues. However, I do not have any issues with any other wireless devices on my home network. My iPad Air 2 works flawlessly via WiFi.
I can put my iPad Air 2 and iPad Pro side by side. My iPad Air 2 maintains a WiFi connection, receiving regular notifications from Gmail, Outlook, FaceBook Messenger, and iMessage. When I leave my iPad Pro at home during the workday, I come home and it's been offline all day (easily noted in Apple Mail app--"last updated" time), and the WiFi icon is not present at the top left of the screen. It usually takes a minute or two to reconnect, then all the notifications come flooding in. When I travel for work, usually Hilton-family hotels; I also have this same WiFi issue at these hotels--the iPad Pro will not maintain a WiFi connection.
I have a simple home wireless network provided by my Apple Airport Extreme AC. I am not using VPN connections, port forwards or anything else that might complicate the situation. I have an absolutely rock solid 200 MB cable internet connection.
iPad Pro, iOS 9.3.1