I've just noticed one weird thing. I've log in to my router settings and went to Device Info > DHCP. There I saw I table with 4 columns and 4 lines. So the columns are: Hostname, MAC Address, IP Address, Expires in. Under the "Hostname" I can see all devices connected to my router: iMac, macbook and iPhone. The weird thing is that "expires in" counts down 24 hours for iMac and macbook, but as for the iPhone, it counts down 60 seconds O_o. After 60 seconds pass, the status changes to "Expired". Any ideas on what it means?
Also, how do I make my iPhone change IP automatically to the one I assign? It seems set random IP address every time.
Your router is set for DHCP - thats fine. Look at the configured range of IP-s which is set to be provided to dhcp clients. and write down one before the last one.
Open Settings on your iPhone and...:
In Settings-Wifi, next to the found wifi network name there is a blue pointer. Click on in it and it will open advanced netowrk settings. By default it is DHCP. you have to click ot Static and fill the proper details of your network. You can read the details from your Time Capsule or other wifi router.
I tried all kinds of stuff to get my iphone 4 (verizon) to recognize my airport wifi and connect to the network after a trip out of town. It would find the airport but not connect to the network (spinning circle). This worked. Unplug airport from power source. Unplug network router and all network switches in between from power source. Let them sit without power for a few minutes. Plug in router and let boot up, plug in switches, and then plug in airport. Wait for green light on airport. iPhone automatically connected at this point and finally worked.
I think it may have been a conflict in the IP address. Maybe, maybe not, but this total power down and power up of all network components worked.
Starting a week or so ago, after over a year of problem free operation...
Wireless networks connect, yet no data is delivered via wireless.
-Pages cannot be browsed
-Emails never send or receive
-Activity indicator churns but nothing goes in or out over wireless.
-Connecting to wireless can be instant or take 2 minutes
-Other wireless devices connect and work fine on my wireless network
-My phone works fine on other wireless networks
-When connecting to home wireless it connects and the phone switches to the correct IP address, etc.
Things I tried that did NOT work:
-Reboot wireless access point
-Reboot wireless access point and gateway/route at same time
-Change security wep/wap/wap2/etc
-Reset network settings on phone (while rebooting all network equipment)
-Change wireless to another channel
-Change wireless name
-Forcing an IP lease renewal on the phone.
What finally DID FIX it:
-In my wireless access point, I reserved the IP the phone had been using for another device.
-Renew the lease on the phone (Settings>wi-fi>blue arrow by wireless name>Renew Lease button at bottom
-Phone switched to a new IP address
-Everything works now.
I hope this helps some of the folks struggling with this.
Best of luck all.
Vexing issue. I have a 2Wire modem that is about a year old and an iPhone that has latest software update just installed few days ago.
Here's what I did to get it to work:
1.) I went to the AT&T / U-verse 2Wire page: http://192.168.1.254
2.) at HOME there is Top Networking Features / under that is WIRELESS (modify security or settings). click on that.
3.) At the bottom of page is MAC filtering (Edit Blocked/Allowed Device List)
4.) Find your MAC address on your iPhone in SETTINGS
5.) Enter MAC address at bottom of webpage you're on (Add New MAC Address to List Manually)
6.) Click on ADD TO LIST
7.) It will show up in Blocked Devices....click the << button to move to ALLOWED DEVICES
8.) Hit save (a little above middle of page on right hand side)
It sometimes takes a little while for the device to show up.
I also turned off modem after I did this and rebooted iPhone AFTER resetting Network settings.
9.) Go to SETTINGS and find your wi-fi router, enter the network key and it wall worked for me.