Wi-Fi on iPhone keeps saying unable to join network (my network name)?

How can I fix this! It's been like this for a week but it works on my laptop fine. I tried unplugging it for a few seconds, I tried resetting network settings, I tried turning my phone off then on again, and I know I'm typing it right. I even typed it in upper case AND lower case. Does anyone know how I can fix this?

Have you tried restarting the phone by holding off button and home button