How to change my dynamic ip address in windows 7
You can change you dynamic Ip address by the following two methods:
Go to start>Run>cmd
Type ipconfig/release they reset your IP address as 0.0.0.0.
Then you can set your desire IP address between your IP range by using the command line ipconfig/renew.
Reset your modem.
Unplug and plug it again.
Switch off the modem and on again.
Before and after changing your dynamic IP address in Windows 7 check your Iphone address using the site Ip-Details.com
,whether the Ip get changed or not.