There is a remarkable difference between a WiFi connection and your iPhone's cellular data; apart from speed, Wi-Fi connection ensures hassle-free internet supply on your iPhone 6.
But of late, I have noticed a few hiccups while connecting my iPhone 6 to any Wi-Fi network at home, office, restaurants or club. There can be some issues with Wi-Fi router; or in worst case, you may have to take your device to Apple Support.
Before doing this, why don't you try some primary remedies? I have done some research online and played with my iPhone 6 to find possible solutions.
How to Fix iPhone 6 Wi-Fi Connecting Issues
Restart your Wi-Fi Network
You are not supposed to restart WiFi settings on your iPhone; all you need to do is simply switch off the router and then switch on after a few seconds. Now try to connect your iPhone and check the result.
If the above method fails to give any result,
Turn Off Wi-Fi
Step #1. Launch Settings app → Tap on Privacy.
Step #2. Now tap on Location Services.
Step #3. Scroll down and tap on System Services.
Step #4. Toggle Wi-Fi Networking OFF restart your iPhone and toggle it ON again.
Still not getting any result?
Force restart is one of the harmless solutions for any software issue. Simply press and hold sleep/wake button and Home button simultaneously at least for 10 seconds. Release your fingers when Apple logo appears. Now check the WiFi connection on your iPhone 6.
Reset Network Settings
Step #1. Launch Settings app → Tap on General.
You will be prompted to enter your passcode. Once you enter the passcode, a single-option menu will swipe up from bottom of screen, asking you to Reset Network Settings.
Step #3. Tap on Reset Network Settings.
Note that this action will delete all network settings on your iPhone.
Sometimes an older iOS version may be the culprit, and therefore, it is recommended you update to the latest iOS on your iPhone 6. Click here to check two methods to update iOS.
Forget WiFi Network
Step #1. Launch Settings app on your iPhone.
Step #2. Tap on Wi-Fi network you are currently using.
Step #3. Now tap on information (i) icon.
Step #4. Tap on Forget This Network.
You will be prompted to forget “Network Name”.
Step #5. Tap on Forget.
After this procedure, select the network again, enter the password and join the Wi-Fi network to check the result.
We have dedicated information on how to change DNS; you can move to Google DNS or OpenDNS when you face WiFi connecting issues on your iPhone 6.
Step #1. Launch Settings app on your iPhone → Tap on General.
Step #2. Scroll down and tap on Reset.
Step #3. Tap on Erase All Content and Settings.
You will be prompted to enter your passcode. Once you enter the passcode, iPhone will again ask you to enter passcode. After this, you will be asked to Erase All Content and Settings.
You can also go for Factory Reset by using iTunes on your computer.
Step #1. Connect your iPhone with computer.
Step #2. Launch iTunes on computer.
You can see your iPhone in iTunes.
Step #3. Select your iPhone.
Step #4. Click on Restore from Summary tab.
Step #5. Your iPhone will restart once the Restore process is completed.
Now you can setup your iPhone 6 from the scratch.
If all the above methods don't work, you should better go to Apple Support to get the issue fixed.