I cannot connect to my home Wi-Fi network sony xperia z

I cannot connect to my home Mobile Phone 

• Restart your device, and then turn Wi-Fi® off and then on again.
• Restart the router. Check that your router is Wi-Fi® certified. Your device is Wi-Fi®certified, so if the router isn’t, the devices may not communicate properly.
  
  
  To check whether your router is Wi-Fi® certified

  • Look for the “Wi-Fi® CERTIFIED” logo or phrase on product packaging or in product literature, or search the Wi-Fi® CERTIFIED products database on the Wi-Fi® Alliance website at www.wi-fi.org.
• Verify that you are in range of the Wi-Fi® router. Check the Wi-Fi® signal strength in the status bar . If the signal is low, or there is no signal, move closer to the Wi-Fi®hotspot, that is, the device that provides the Wi-Fi® network.
• Make sure that both the device and the router are using the latest software versions.

  • Device: Click here to check for software updates for the device.
  • Router: Contact the router manufacturer for instructions on how to update the router software.
• Check the following router settings using your computer. If you are not sure how to change the settings, check the user guide of the router or contact your router manufacturer.

  • Network mode/speed: Change to auto or mixed mode instead of b, g or n.
  • SSID and password: Make sure there are no special characters or characters that are not in the standard ASCII character set.
  • DHCP: Make sure it’s turned on. You could also try setting a static IP address if you have problems accessing the Internet using your Wi-Fi® connection.
  • MAC filter: Make sure it’s turned off. Also set your device as allowed.
  • Channel: Try using another channel, preferable 11 or lower.
• Add your device’s MAC address to the MAC filtering table of the Wi-Fi® router. Some routers require your MAC address.

  For instructions on how to insert the MAC address to the MAC filtering table of the router, check the user guide of the router or contact your router manufacturer.
  
  
  To check the MAC address of your device

  1. From your home screen, tap .
  2. Find and tap Settings > About tablet > Status.
  3. Scroll down to Wi-Fi MAC address.