I've done a lot of troubleshooting. It started happening around September when I installed IOS8. something. Sometimes my iPad would be fine other times it would not load pages and transfer data in apps so slow I would give up. This happened at home, in hotels, and on my mobile hotspot. When I would run speed tests my normal download speeds of 18meg would go down to about .33meg. Some days it would work some days it would not. When In installed one update it worked for a week then it came back. I noticed recently the slowdown only when I had bluetooth on even if it wasn't connected to anything. When I would shut bluetooth off I would get my speed back. With it on slow again.
When I upgraded to IOS 8.2 a few days ago I had speed back up to 18meg with my bluetooth on but once I streamed audio to my bluetooth speaker the problem came back. Bluetooth off or on and not connected to speaker my speed is good. Bluetooth on and connected to audio speed poor.
Do I think it's a hardware issue? No because others are having similar problems that started around the same time and from one IOS upgrade to another the problem is still there under different circumstances.
Also Apple emailed and called me. We installed a WIFI logger and I sent them the results. They also wanted me to answer the questions below. I think they're trying to figure out why some have this issue but not everyone. In regards to the questions below it's all about our networks and such but nothing about their IOS update. It's like they refuse to accept the fact that IOS8 might have a problem with some devices.
What's my background. I've been an IT consultant for 11 years specializing in Microsoft technology so I'm not some dummy when it comes to troubleshooting and technology.
Information about network:
* Make
* Model
* Firmware Version
* FCCID of AP/Router
* Hardware Rev (Only needed if there is NO FCCID)
* Does this problem occur if the AP/Router is rebooted?
* When was the last time the AP/Router firmware was updated?
Network Configuration:
- Network Mode (b/g/n mixed, b/g only, a/b/g/n, n only etc)
- Security (WPAv1 (TKIP), WPAv2 (AES), WPA-Mixed (TKIP+AES), WEP
- Is a MAC filter used?
- Is this a hidden network?
Who your ISP?
What is the type of WAN connection (Cable, DSL, Fiber, etc)?
What speed is your internet connected rated at?
What is the name of the wireless network?
Have you disabled WMM?
Is DHCP Enabled or is the user using static IP addressing?
Have you tried to connect closer to the Router? What is the outcome?
When the issue is experienced, do non-iOS devices work properly? Are these devices wireless? Sounds like you have other devices that are working, based on your post.
If using security, does the problem still occur with Open security?
Does the issue persist when rebooting the iOS device?
Does this issue only occur at home?
Has the user tried changing the operating channel?
Any other work-arounds? If so please describe.
What version of iOS is running on the Apple Device?
If Bluetooth is Disabled, do you still see this issue?
If Location is Disabled, do you still see this issue?
Distance from the Router(include multiple distances portraying signal strength if any)?
Do you have different WiFi name for 2.4Ghz and 5.0Ghz, if so which one was used?
If the customer sees an alert when attempting to join, what is the exact text of the alert?
Did this iOS device ever have expected Wi-Fi functionality? If so, please elaborate when, what changed, etc.