Hi all, it now works for me at least ... very weird ...😕
For recall, my home network is full Cisco, and access-point is an AIR-LAP-1142N-E (running autonomous software, so, equivalent to an AIR-AP-1142N-E)
While I was on holidays, my iPhone 3GS and my iPad 3 were connected flawlessly to an ISP box, without any issues (a Freebox Revolution V6 - since I'm in France). Very frustrating that it works with a cheap box and not with a Cisco network 😠. So, definitely not an Apple iOS issue, but probably a Cisco IOS bug. And still very annoying to have mail app in background and often updating mailbox, this to reenable WiFi. Needless say, Youtube videos were unwatchable ...
Back then, I tried to solve this, performing many tests. Problem is that I performed so many tests that I do not know exactly what was the thing that solved the issue ...😐
On router:
-bound IP address on dhcp (permanent lease) -> no effect
On Access Point:
-Updated IOS to latest version (c1140-k9w7-mx.152-4.JA1) -> no effect
-Set holdoff time for authentication failed clients to 10 seconds (command: dot11 holdoff-time 10) -> no effect
-On 802.11b/g radio settings, set keepalive to 10 minutes (command: interface Dot11Radio0 then
keepalive 600) -> no effect
-On same radio, disabled default filtering ( commands: no bridge-group 1 subscriber-loop-control, no bridge-
group 1 spanning-disabled, no bridge-group 1 block-unknown-source) -> no effect
Then:
-Set en extra SSID to perform tests with other radio (802.11n) with iPad since 3GS is limited to 802.11g
-put SSID in other radio (interface Dot11Radio1, i.e. 802.11n)
-unshut 802.11n radio
-tried to connect to this radio. Connection failed since configuration was incomplete, but 802.11g was no
longer disconnecting this time.
I then shut 802.11n radio to reuse 802.11g, and I have since no issues. An explanation, perhaps, but really unsure: 802.11n radio was never used on that device, so perhaps, it may explain (seems like a bug 😉)
True, when devices enters in sleep mode, they disconnect themselves from network, but when alive, no longer constant disconnects while using internet (or not). Wifi icon remains in steady state.
Shame on Apple to be so uncommunicative with this well-known issue! My wife, seeing these issues, no longer wanted Apple devices, and turned to an S3 mini and a Galaxy Note (she never experienced that issue).
BTW, hope this helps some of you!