What version of iOS are you using?

[LGNilsson]

We're pretty sure this is a Wi-Fi driver issue on our side at this point and we're working with QCA to resolve it, but as it doesn't happen on all iOS devices, it's a bit hard come up with a guaranteed fix.

[masrdart]

iPhone 5s
iPad 2
iPhone 4
all running 7.1.2 - intermittently connects and drops after sleep

Curiously enough, the iPhone 4 & original iPad 2 cannot join 5.4GHz frequency

[fgtech]

The iPhone 4 does not have 5GHz Wi-Fi. I believe the first iPhone to get that was the 5. I don't know the iPad specs offhand, but that is likely what's going on with your iPad 2 as well.

Edit: Maybe the iPad 2 does have 5GHz Wi-Fi?
Specs for iPhone 4 are here: http://support.apple.com/kb/SP587 (note "802.11n 2.4GHz only" where Wi-Fi is listed)
Specs for iPad 2 are here: http://support.apple.com/kb/SP622 (the note about 2.4GHz only does NOT appear here)

[masrdart]

Makes sense re: iPhone 4. Think the original iPad 2 (2011 release) probably was similar to iPhone 4 - the 2012 refresh may have included 5GHz (judging by WiFi behavior by our different gen iPad 2s)

[utrph77004]

Live in a house with multiple iOS devices.  So far No connectivity issues until today.

work fine:
iPhone 4S on 7.1.2
iPad 3 on 7.1.2
iPhone 5S on 8.0
IPad Air on iOS 8.0

Today, we added two iPhone 6s into the fold.
Both are identical models: Gold, 64 GB, AT&T

One is fine with A+, however the other iPhone
6 will connect for 7-9 minutes, and then it disconnects.  It will not
reconnect automatically.

Have tried rebooting, resetting it's network settings, and finally
Resetting all settings on the affected 6. Nothing improves the problem.

I have set up my old router as a repeater, and the iPhone connects without
any issues at all. Mysterious problem!

[utrph77004]

I just wanted to post an update, since it seems that tinkering with a few router settings seemed to resolve the disconnecting issue for me, at least.

For the 2.4 GHz band, I did two things:  changed the channel from 2 to 10, and then under Advanced Settings, I changed the width from 20 to 20/40. After doing that, the iPhone 6's connection issues vanished.

If others are experiencing this, they might want to try and see if it helps.

[syntax1269]

Not sure if it will help, but also experiencing issues with Intel WiFi Link 5350
interl Driver version: 13.4.0.139

just general slowness with big file transfers. bust of small files are fine, to a point. but when there is a lot of traffic (coping a mvk file 4gb) it would burst but then tranfer rate drops significantly. tried both bands, but same result. just thought i'd share.

[Pino]

iPhone 4 on 7.1.2
iPad 3 on 8.0
iPhone 5 on 8.0

I have sometimes connectivity issues with the iPhone 5. 
A+ running firmware R66

[aurel]

I'm using iOS 8 on Iphone 6

[LGNilsson]

Survey closed, as the issue doesn't appear to be related to the iOS version.