Iphone 6 ios 9.2.1 wifi doesn't work

Hi MatthewWeekend,

Welcome to the Apple Support Communities! I'm sorry to hear you have been having these issues with your iPhones; it sounds like you have been on the right track in your troubleshooting. Given all the troubleshooting steps you have tried and the networking issues you are still having, you may want to make sure you have your data backed up, then try restoring your iPhone(s) to factory settings and test the issues in that default condition without restoring any of your data or settings (apologies if you have already done so). You may find the information and steps outlined in the following article helpful:

Use iTunes on your Mac or PC to restore your iPhone, iPad, or iPod to factory settings - Apple Support

Regards

i have an iphone 5s ios 9.2.1 and cant connect to my home wifi. it keeps telling me i have the wrong password although i have it right. i tried all of the steps

- reset network settings

- disabled wifi-assist

- forget network

- hard reset

- full-on restore, ~90% of 'other' files removed in the process

- renewed lease

- diagnostic run by apple employee with no errors

- updated router firmware

- messed with router settings

- tried a different DNS

- I don't run a VPN

as MatthewWekend tried and i also tried factory resetting the iphone5s and the wifi still wont connect.

i hope u guys come out with a solution soon.

I have the same problem since I accidentally updated to iOs 9.2.1
It was totally frustrating. I am not sure that factory reset will work or not

I am having the same issues as other users with my iPhone's wifi capability since updating to the latest IOS. My home wifi works fine all other option fail! Don't update is my suggestion!

I have tried various options without success:

- reset network settings

- disabled wifi-assist

- forget network

- hard reset

- full-on restore, ~90% of 'other' files removed in the process

- renewed lease

- diagnostic run by apple employee with no errors

- updated router firmware

- messed with router settings

- tried a different DNS

- I don't run a VPN

I Have even wiped the phone and stated again with no joy!

Are there any other solutions out there?

Thanks