Could not access wifi (wpa,wpa2)

hi, all
im developing an access point(ap), but i have critical problem...
in auth mode WPA(personal, enterprise mode, and aes, tkip, tkip-aes), WPA2(personal, enterprise mode, and aes, tkip, tkip-aes), any devices can connect to my ap except for iphone
i could not understand why only iphone disassociated my ap
belows are logs...
Apr  5 10:05:05 jingyun-ui-iPhone kernel[0] <Debug>: 500368.098888 wlan.N[10295] AppleBCMWLAN Joined BSS:     @ 0x812f4200, BSSID = 00:90:a3:47:4f:c1, rssi = -45, rate = 54 (100%), channel =  4, encryption = 0x8, ap = 1, failures =   0, age = 42, ssid[ 6] = "cc3900"
Apr  5 10:05:05 jingyun-ui-iPhone kernel[0] <Debug>: AirPort: Link Up on en0
Apr  5 10:05:05 jingyun-ui-iPhone kernel[0] <Debug>: en0::startOutputQueues (0)
Apr  5 10:05:05 jingyun-ui-iPhone kernel[0] <Debug>: IO80211PeerManager::doEnable
Apr  5 10:05:05 jingyun-ui-iPhone kernel[0] <Debug>: en0: BSSID changed to 00:90:a3:47:4f:c1
Apr  5 10:05:05 jingyun-ui-iPhone kernel[0] <Debug>: en0::IO80211Interface::postMessage bssid changed
Apr  5 10:05:05 jingyun-ui-iPhone kernel[0] <Debug>: en0: BSSID changed to 00:90:a3:47:4f:c1
Apr  5 10:05:05 jingyun-ui-iPhone kernel[0] <Debug>: en0::IO80211Interface::postMessage bssid changed
Apr  5 10:05:05 jingyun-ui-iPhone kernel[0] <Debug>: IO80211Peer::queuePacket ff:ff:ff:ff:ff:ff alllocate queue for ac 0
Apr  5 10:05:05 jingyun-ui-iPhone configd[48] <Notice>: network changed: v4(pdp_ip0:163.222.71.173, en0-:192.168.0.66) DNS! Proxy-
Apr  5 10:05:05 jingyun-ui-iPhone configd[48] <Notice>: Captive: CNPluginHandler en0: Inactive
Apr  5 10:05:05 jingyun-ui-iPhone configd[48] <Notice>: network changed: v4(pdp_ip0:163.222.71.173) DNS Proxy
Apr  5 10:05:05 jingyun-ui-iPhone mDNSResponder[31] <Error>: DeregisterInterface: Frequent transitions for interface en0 (192.168.0.66)
Apr  5 10:05:05 jingyun-ui-iPhone mDNSResponder[31] <Error>: mDNS_RegisterInterface: Frequent transitions for interface en0 (FE80:0000:0000:0000:3ED0:F8FF:FE24:E898)
Apr  5 10:05:05 jingyun-ui-iPhone kernel[0] <Debug>: 500368.199680 wlan.N[10296] AppleBCMWLANCore:startRoamScan(): 3365 Delaying RoamScan; because  Join Mgr Busy 1 isWaitingforIP 1
Apr  5 10:05:08 jingyun-ui-iPhone Preferences[12524] <Warning>: -[APOtherNetworkController keyboardWillShow:]
Apr  5 10:05:08 jingyun-ui-iPhone kernel[0] <Debug>: 500371.085227 wlan.N[10297] AppleBCMWLANNetManager::handleDisassoc():  status = 0, reason = 15, flags = 0x0, authtype = 0, addr = 00:90:a3:47:4f:c1
Apr  5 10:05:08 jingyun-ui-iPhone kernel[0] <Debug>: 500371.089803 wlan.N[10298] AppleBCMWLANNetManager::leaveNetworkAsync():  kDeauthdCurrNetwork already set. Skipping call to leaveNetworkASync
Apr  5 10:05:08 jingyun-ui-iPhone kernel[0] <Debug>: 500371.089933 wlan.N[10299] AppleBCMWLAN Left BSS:       @ 0x812f4200, BSSID = 00:90:a3:47:4f:c1, rssi = -45, rate = 54 (100%), channel =  4, encryption = 0x8, ap = 1, failures =   0, age = 45, ssid[ 6] = "cc3900"
Apr  5 10:05:08 jingyun-ui-iPhone kernel[0] <Debug>: 500371.090008 wlan.A[10300] AppleBCMWLANCore::deleteAllPktFilters():  Deleted IPv4/IPv6 and Magic packet filters
Apr  5 10:05:08 jingyun-ui-iPhone kernel[0] <Debug>: AirPort: Link Down on en0. Reason 1 (Unspecified).
Apr  5 10:05:08 jingyun-ui-iPhone kernel[0] <Debug>: en0::stopOutputQueues
Apr5 10:05:08 jingyun-ui-iPhone kernel[0] <Debug>: IO80211PeerManager::doDisable
Apr  5 10:05:08 jingyun-ui-iPhone kernel[0] <Debug>: en0::IO80211Interface::postMessage bssid changed
Apr  5 10:05:08 jingyun-ui-iPhone Preferences[12524] <Warning>: WiFi: Joined (null)
Apr  5 10:05:09 jingyun-ui-iPhone Preferences[12524] <Warning>: -[VPNConnectionStore reloadVPN]: The active VPN configuration has changed from  to (null)
Apr  5 10:05:09 jingyun-ui-iPhone Preferences[12524] <Warning>: -[VPNBundleController _vpnConfigurationChanged:] (0x1ed9d110:<VPNBundleController: 0x1ed9d110>): _serviceCount(0), serviceCount(0), toggleInRootMenu(0), RootMenuItem(1)
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: 500372.046796 wlan.N[10301] AppleBCMWLANCore::setASSOCIATE():  [wifid]:  lowerAuth = AUTHTYPE_OPEN, upperAuth = AUTHTYPE_WPA2_PSK, key = CIPHER_PMK , don't disassociate    .
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: 500372.130819 wlan.A[10302] AppleBCMWLANNetManager::prepareToBringUpLink():  Delaying powersave entry in order to get an IP address
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: 500372.130940 wlan.N[10303] AppleBCMWLAN Joined BSS:     @ 0x81459000, BSSID = 00:08:9f:d2:f4:a0, rssi = -73, rate = 54 (100%), channel =  9, encryption = 0xc, ap = 1, failures =   0, age = 0, ssid[ 6] = "iptime"
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: AirPort: Link Up on en0
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: en0::startOutputQueues (0)
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: IO80211PeerManager::doEnable
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: en0: BSSID changed to 00:08:9f:d2:f4:a0
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: en0::IO80211Interface::postMessage bssid changed
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: en0: BSSID changed to 00:08:9f:d2:f4:a0
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: en0::IO80211Interface::postMessage bssid changed
Apr  5 10:05:09 jingyun-ui-iPhone kernel[0] <Debug>: IO80211Peer::queuePacket ff:ff:ff:ff:ff:ff alllocate queue for ac 0
Apr  5 10:05:10 jingyun-ui-iPhone kernel[0] <Debug>: 500372.210844 wlan.N[10304] AppleBCMWLANCore:startRoamScan(): 3365 Delaying RoamScan; because  Join Mgr Busy 1 isWaitingforIP 1
Apr  5 10:05:10 jingyun-ui-iPhone kernel[0] <Debug>: 500372.376670 wlan.N[10305] AppleBCMWLANJoinManager::handleSupplicantEvent():  status = 6, reason = 0, flags = 0x0, authtype = 0, addr = 00:00:2c:f4:02:00
Apr  5 10:05:10 jingyun-ui-iPhone profiled[12552] <Notice>: (Note ) profiled: Service starting...
so my question is that what means for reason=15 (wlan.N[10297] AppleBCMWLANNetManager::handleDisassoc():  status = 0, reason = 15, flags = 0x0, authtype = 0, addr = 00:90:a3:47:4f:c1)
, and why handleDisassoc function is called with reason=15?
android, windows could connect my ap, so i think there is no problem with wpa,wpa2 authentication packets.
are there ideas?
ps1. what is the best way to debug this problem for windows?
ps2. please save me. this problem makes my lifespan decrease.

    Mifrett, don't panic. I'm here to assist you. It sounds like the software update may be conflicting with the software of the applications that were previously downloaded to your device. I recommend that you uninstall a few applications in Settings>Manage Apps> tap the app>tap uninstall application. Once you have uninstalled a few applications, power your device off/on. You may redownload the applications that you previously had. However, this time, the applications will be downloaded to your phone with the latest app software. I trust that these steps will improve the performance of your device. Keep us posted. We're here for you.
LasinaH_VZW
VZW Support
Follow us on Twitter @VZWSUPPORT

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