Slow Wifi on iPhone X

I recently purchased an iPhone X. All is well except for the wifi speed. Its slow on the iPhone. I have 40 mb connection but the speed test shows around 15 Mb normally. Apps are also slow to load such as Instagram. Net is working fine on other devices such as my old iPhone 6s, iPhone SE, iPads and macbooks. Its something with iPhone X.

I have tried forget the network and join again, reset network settings, hard restart iPhone but no luck. Anybody else facing the same issue? Any solution for this?

iPhone X, iOS 11.2

Posted on Dec 13, 2017 7:08 AM

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Posted on Mar 6, 2018 2:34 AM

I called Apple and took my brand new iPhone X to a Apple Store. They tested the device and immediately recognized the problem. Apple employees never go into details, but it seems its a batch of devices with defective chip/antenna and they are replacing the device. I suggest you all do the same.

58 replies

Mar 2, 2018 2:35 AM in response to jimmerz98

Exactly the same here.


I have a 240 Mbps connection. Over Apple Time Capsule my iPad Pro and my "old" iPhone 7 always get around 180-200 Mbps. My iPhone X doesn't go over 25-30 Mbps. I even took the case off thinking it could be interfering with the phone's antennas and it didn't make any difference.


Ironically, I enabled my crappy cable modem's wi-fi and with it I eventually (it's extremely inconsistent) get 100 Mbps. I think there's a serious issue with iPhone's wi-fi chip/firmware/driver and it's driving me nuts.

Jan 4, 2018 5:34 PM in response to joeyfromnorthport

Tried this.


It's not working at all.


Macbook Pro and iPad Mini are all getting 110mbps, but the iPhone X is getting 15mbps to 25mbps. Sometimes it loses the 5GHz network altogether. This is really frustrating. I'm about 19 steps away from my router in a single family home (no second story).


Originally thought it was the router, and Apple replaced my Airport Extreme. Came home with a new setup, and the issue remains. I reset network settings as well.

Feb 21, 2018 5:10 AM in response to kashif789us

I am new to iphone. My whole family took advantage of the BOGO at AT&T and we all now have iphone X's. Being an android owner since owning a phone I have some learning to do with the iphones. So, far I am really liking the phone.


I have internet speeds of 200Mbps. Over wifi I typically get around 150-175Mbps. With my new iphone X I am only getting between 25-30Mbps (not horrible) But considering what I am supposed to be getting this has me concerned with the software of my new device. All other devices in my house are consistantly getting 150-175Mbps.


When I turn off wifi and use DATA I get 45-75Mbps. I have been searching and seeing people with these issues but I have not heard any solutions? Are there iphone X's out there that are performing correctly on wifi?

May 15, 2018 8:15 PM in response to joeyfromnorthport

I’ve done exactly this with the same result: naming the 5G band on my time capsule and switching to that band more than doubles my download speed as does turning off Bluetooth. Am I likely to see reduction in speed over time? Will I likely have problems with WiFi outside my home? Will having apple replace with a new x likely fix the problem?

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Slow Wifi on iPhone X

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