Iphone 6 Wi-Fi problems?

I just upgraded to an iphone 6 from iphone 5s, the Wi-Fi will not reach my bedroom on my 6 and i've never had this problem with my old phones. Doing research, this has been a common problem with the iphone 6. As this phone is a few years old, has this problem been fixed and if so what can i do to fix it?

Try restarting your router then reset it. Also reset your network settings on phone

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