Why does it say I have a weak signal

I'm going to guess the actual message suggests you have weak security? See this link --> Recommended settings for Wi-Fi routers and access points - Apple Support

1-2Boxerdogs Said:

"Why does it say I hsve a weak signal"

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Referring to a Connection?:

Are you seeing few lines for a signal's strength? If so, what the connection type? Refer to the following.

• WiFi:

If Wi-Fi has a week signal, then restart your iPhone.

Manually Restart your iPhone:

1. Go To: Settings
2. Select: General
3. Scroll to: the Very Bottom
4. Select: Shut Down
5. Slide Finger: to the Right
6. Wait: 30 Seconds
7. Power One: the iPhone
8. Try this Once More

or...

• Cellular:

Contact your Carrier:

If you are having weak signal, then contact your carrier, as they are the one who provide you with the service of Cellular.

1-2Boxerdogs Said:

"Why does it say I hsve a weak signal: Thank you I tried this 2 times no luck I will contact AT&T Have a blessed Day"

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You are welcome. Let us know how it works out.