Why doesn’t one device not connect to a Wi-Fi network?

Good afternoon, can you tell me what the problem could be?

Immediately write that on the phone reset network settings, rebooted, forgot networks. He (the phone) does not connect to the wi-fi network at home, while if you give out Wi-fi from other devices all works without problems. Home router works, as all other devices that I tried without problems connect to the home Wi-Fi network (Router also rebooted) Please help! =)

Answer

Good afternoon.

Clarify in the comments:

What router and what phone do you have?
What error appears on your phone when trying to connect to your home Wi-Fi network?
Did everything work before?
Have you tried changing the name of the Wi-Fi network in your router settings? You can try it, it should help. You can also change the Wi-Fi network channel, channel width. The problem’s in there somewhere. I think so.

I’m waiting for your answer. We’ll keep thinking.