iPhone 12 not connecting to 5GHz network.

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Level 1

5 points

iPhone 12 not connecting to 5GHz network.

As already stated in the title I use an iPhone 12. My problem right now is that it is not connecting to the 5GHz frequency band but only the 2,4Ghz. The resulting connection is much slower than normal. I'm trying to find out where the issue is. I've tried searching online but found no results that could help me. My device is on the latest iOS (18.3.2). I've tried turning my wifi on and of and I've even gone as far as forgetting the network and reentering the password, but nothing has helped. Also there are no mesh repeaters that only support 2,4GHz or something like that, my phone is directly connected to the router. It is also not because i'm to far away because the macbook where i'm typing this right now is directly next to my phone and is connected via 5GHz. And all other devices in the network are also connected with 5GHz including another iPhone 14 and an AppleTV.

Is my iPhone to old to support 5GHz?

Can somebody help me out here?

Thanks in advance.

iPhone 12

Posted on Mar 22, 2025 02:26 PM

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Answer 1

Catking0

Level 1

14 points

Mar 22, 2025 02:46 PM in response to mats121

Hi,

Your iPhone 12 is definitely able to support the 5GHz band of your Wi-Fi.

There is a potential limit to how many devices your router can support on its 5GHz band although it sounds like you’ve had this issue for a while and I would be surprised that no other devices had this issue.

I would test turning off the 2.4 GHz band on in your router settings to see if your phone can connect when only the 5GHz is being broadcasted. If it does depending on your requirements it may be best to keep the 2.4GHz off if the 5GHz covers your home and you don’t have any legacy devices that only support 2.4GHz.

Let me know how you get on.

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iPhone 12 not connecting to 5GHz network.

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