Can’t connect to wifi using 2.4 ghz wifi

I have the same issue. So, I changed my router which can broadcast in 5Ghz. Now, it works well.

In addition, I have one more problem. The GPS does not work well. It started several days ago all of sudden while I was driving with Google Maps. The GPS spot does not move at all, but it can only spot the place where I am.

guarantee this generic solution isn't the issue. I started having exactly the same problem tonight. 4 out of 5 phones in my house, all running ios 11.0.3 started getting "incorrect wifi password" for 2.4ghz network. My same router on the 5Ghz network works perfectly for all devices.

Bug in IOS 11.0.3 somewhere for 2.4Ghz networks.

4 out of 5 devices in my house started having the same exact problem today over the course of several hours. They all connect to the same router on the 5Ghz band no problem.

I think there's a bug in 11.0.3, and I'd guess after a couple of days the 5Ghz band will have the same problem. Maybe when the devices try to renew lease on the wifi connection?

Same issue here on iPhone 7. My fiancé’s 7 plus is fine but he hasnt updated to iOS 11. Spent last two days on phone with Apple support to no avail. I can connect to any 5 ghz band but no 2.4 ghz. Unfortunately our home router only broadcasts in 2.4 ghz. They said by have never heard of this issue and suggested I call my ISP and LINKSYS support. Restored router and phone to factory settings after trying everything in the support articles. Guess I am stuck with buying a new router that supports 5 ghz. By the way it does connect if I lay my phone on top of the router. I don’t even get the wrong password message. But as soon as I pick it up and step away it falls off network and gives the wrong password error when I try to reconnect.

It's definitely an apple issue. I have An iPad & 5 that say incorrect password. Then I have a 5s and 4 which sign on just fine. My roommates 5s and 7 are fine.

I think it comes down to type of security the Aks vs tkis which I don't believe apple allows for a choice to be made.

Unfortunately I don't have time to figure it out right now. Please let us know if you come across anything. Murph

I have the same problem, but with just one device (an iPod running IOS 9.3.5). It worked fine with 2.4 Ghz for years; still works with 5 Ghz (connects to an Airport Extreme configured with same wifi password; also two other non-Apple routers). The 2.4 Ghz SSID shows up, but I get the "incorrect password" message when trying to connect. WPA2 personal security. However, I set up a guest network with WPA/WPA2 personal security, and am able to connect to the guest network.

No solution yet? I'm having the same problem with my daughter's iPhone 5 (message: "wrong password"). Can't connect tot 2.4 Ghz networks at home, school and grandparents. 5 Ghz network is no problem but isn't available on every location.

I have the same kind of problem with my Iphone 6. My phone is up to date for the ios. It seems that it can connect to 2.4ghz, but the trick is that my phone has a really small range of connectivity toward 2.4ghz. However with 5ghz, it works perfectly fine (same kind of range as my previous 2.4ghz). Also, it's applied to every kind of wifi that has 2.4ghz (not just at home). I read that 2.4ghz has a larger range of connectivity than the 5ghz so I think that it's either my phone is broken or a software problem.

Same problem here with my new iPhone 6. Either cannot connect due to wrong password or when it does connect there is zero speed. This happens with my Draytek router which transmits only on 2.4 Ghz. Other apple devices are not impacted. The iPhone 6 works fine with my upstairs AirPort Extreme which transmits also on 5 Ghz.

Extremely annoying bug.

iPhone 7 Plus (iOS 11.0.3) can not connect wi-fi on Time Capsule 2.4GHz (wrong password message) but perfectly connects to 5GHz (same password).

Hello,

Double check with all the steps in this article:

If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support

I suspect that to. However, I removed all my cables from my Netgear Router CR702 and restarted it and voilá! I’m able to connect to the 2,4ghz network with all iOS devices using iOS 11.0.3

This is not an iphone issue but the router's problem.

i have many iot devices that connect only on 2.4 and they too disconnect (im assuming because of getting the same error).