Iphone 6 has trouble connecting to home Wi-Fi, but other devices connect to it flawlessly? - 1

Iphone 6 has trouble connecting to home Wi-Fi, but other devices connect to it flawlessly?

Added (1). I noticed recently that I can't pick up a Wi-Fi signal from my router unless I'm standing beside it or in a close room. I have checked with other devices and this is not the case -- the Wi-Fi connects flawlessly and it is as fast as it always has been. It's just my phone! I have the latest iOS installed and have cleared networking data many times, but it still continues to not work. Any help is appreciated.

Added (2). I can connect to public Wi-Fi and other homes' networks, just not mine.

I think the router is not allowing just your device to connect. It's called MAC Address filtering, blocking your iPhone 6 MAC Address (basically its ID number for Wi-Fi). The way to fix it is to add your iPhones MAC address to the whitelist (or remove it from the blacklist) or reset the router and all its settings. If none of these work, you might need to get a newer router.