Q: I am not able to connect to my WIFI home network.my computer guy says the phone is the problem

Hello Kamalabai,

It sounds like you are not able to connect to your Wi-Fi connection at home. I recommend the troubleshooting from the following article named:

iOS: Troubleshooting Wi-Fi networks and connections

http://support.apple.com/kb/ts1398

1. Tap Settings > Wi-Fi and turn Wi-Fi off and on. If your Wi-Fi setting is dimmed, follow these steps.
2. Restart your iOS device.
3. Turn your Wi-Fi router off and on2. If your ISP also provides cable or phone service, check with them before attempting this step to avoid interruption of service.
4. Update your device to the latest version of software.
5. Update your Wi-Fi router to the latest firmware2. For AirPort Base Stations, install updates using the AirPort Utility.

Unable to connect to a Wi-Fi network

1. Verify that you're attempting to connect to your desired Wi-Fi network.
2. Make sure you're entering your Wi-Fi password correctly. Passwords may be case sensitive and may contain numbers or special characters.
3. Reset network settings by tapping Settings > General > Reset > Reset Network Settings. Note: This will reset all network settings including:
   • previously connected Wi-Fi networks and passwords
   • recently used Bluetooth accessories
   • VPN and APN settings

If the issue persists after trying all of these steps, I would next backup and restore the device with iTunes, and this article will help you do that:

iOS: Back up and restore your iOS device with iCloud or iTunes

http://support.apple.com/kb/ht1766

Thank you for using Apple Support Communities.

All the very best,

Sterling