iOS 9: trouble with the interaction of devices across frequencies in mode dualband (2.4 GHz and 5 GHz)

We have a DualBand WIFI network the following devices:

  • Time Capsule 2 TB Airport (introduced in June 2013, ME177LL/A, 802.11ac, 2.4 GHz & 5 GHz)
  • AirPort Express 802.11n (2nd generation, introduced in June 2012, 802.11n, 2.4 GHz & 5 GHz)
  • Apple TV (2nd generation, introduced on September 2010, 2. 4 GHz)
  • MacBook Alu (end of 2008 10.11.1 13 inches, El Capitan, connecting on 802.11ac / 5 GHz)
  • Mac Book Pro (end of 2013, 15 inches, 10.11.1 El Capitan, connecting on 802.11ac / 5 GHz)
  • 6 s iPhone (iOS 9.1, 5 GHz)
  • iPhone 6 Plus (not S, iOS 9.1, 5 GHz)
  • 2 Air iPad (iOS 9.1, 5 GHz)
  • 100 HP LaserJet color MFP M175nw (2.4 GHz)
  • 2 x Philips Fidelio DS8800W speakers of airtime wireless (2.4 GHz)

As you can see above, some of our devices (for example HP LaserJet 100 color MFP M175nw) do not support the less crowded 5 GHz band. That's why we use the option in the TimeCapsule so that it works on the 2.4 GHz and 5 GHz at the same time. This means that devices join the 'classic' 2.4 GHz environment or join a single environment 5 GHz (ranked from another WIFI network)

Since the update of our iOS iOS devices 9 (and up to and including the current version 9.1) I now have problems connecting to my device (printer and music) in the mix WIFI / environment frequency RLR. We cannot print from iPhone and iPad when connect us to the 5 GHz network. If we join the 2.4 GHz network, it works as before. On the contrary, of our MacBooks to access devices through frequencies also runs on El Capitan. Interestingly, these questions are entered with the introduction of iOS 9 and affect only the devices having this installed system.

Also facing these issues? Apple is aware of these?

Since the iOS Update 9 (and up to and including the current version 9.1), I now have trouble connecting to my devices in a mixed WIFI / WLAN frequency environment.

Would not really have nothing to do with the time Capsule or AirPort Express... and everything to do with iOS 9.0 and 9.1, since it is a common complaint of users who have "upgraded" to newer operating systems.  In other words, if you have a problem after having made a change... in the heart of the question can probably be identified by asking ' what has changed?

Post your questions in the support for the iPhone or iPad forums, according to what is most appropriate for you. Looking at similar issues over there, some users have reported that their iOS device "Forget this connection" and then by defining a new connection to the network again helped. The links are just below:

iPad

iPhone

Tags: iPhone

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