Hi there, and welcome to JustAnswer, I look forward to assisting you today with your question and providing the best answer possible.

Can you do the following on the iPhone please.

Go to Settings, Wifi. Press on your network, then the right arrow and choose Forget Network.

Then hold the Home Button and Power button for about 10 seconds until you see the Apple Logo.

When you see this, release the buttons and let the phone reset.

Once it has, reconnect to the wifi and enter in the password.

If you still have the problem, please let me know Before Rating My Service.

Thank You.

ok, it will only do this when in range, or if it has half connected int he past.

If you don't see it after selecting your network from the Wifi List on the phone, then please proceed with the reset procedure.

Let me know please the results of this

ok, if you are using Wep, this can be the problem.

But first, I just want to double check that we have the correct password.

On the computer that is connected to the Wireless, can you click Start (windows logo button bottom left)

Type in the search box Wireless Networks and press enter on the keyboard.

Right click on your network that is in the list and select properties.

Click on Security

Put a check in the check box Show Characters

This will display the Network Security Key

Can you make sure please, this is the text you are entering on the iPhone. Capitals need to be entered as Capitals.

If you have confirmed it is the correct password, please let me know.

Sorry I wasn't aware when you listed this as a network that is was a neighbors.

What we need to do is set the wireless up securely. This is why you are getting all these problems. I will list out the steps to do this, please follow them carefully Bob, and if you get stuck, let me know please as id we get one of the steps wrong, it wont work.

Make sure you are on a computer that is connecting to the DLink (either via wireless or cable)

Open your web browser (eg: Internet Explorer) and type http://192.168.0.1 into the address bar, then hit "Enter" or "Return."

Use "Admin" as the username and leave the password XXXXX when the login screen appears.

Click "OK." You should now see the D-Link configuration screen. Set Up General Security

Under the "Home" tab, choose "Wireless" and select the "Off" option.

Enable Wireless Encryption Protocol (WEP)

Locate the "Home" tab in the D-Link Configuration screen, and click on the "Wireless" button.

Use the "Open System" button beside "Authentication."
Select the "Enabled" button next to "WEP," and set the encryption key to "128 bit."

Set the "Key Type" to "ASCII" and choose a 13-character password XXXXX the "Key 1" field.

Write down the password XXXXX a secure location.

Click "Apply." Change the SSID

Change the SSID to make it more difficult for others to locate and use your network by clicking on the "Home" tab and locating the "Wireless" button.

Change the default SSID to one of your choosing, then click "Apply."
Disable SSID broadcasting. Under the "Advanced" tab, click on "Performance" and check off the "Disabled" box. Again, click "Apply."

You will then need to reconnect all your computers to the new secured network you just created. This is also the case for the iPhone.

The name of the network is the name you gave for the SSID and the password XXXXX XXXXX 13 character password XXXXX gave.

If you have any problems with any of the steps Bob, please let me know before Rating Me.

Thanks Bob, I got that from your last comment, but good to confirm.

Let me know how you go with my instructions please.

Thanks Bob,

I am standing by

ok, Bob, to make sure, everything is now connecting nicely?