Apologies if this has been talked about already....
I am seeing serious issues on iOS 11 (latest version) with WiFi download speeds. I also saw this on previous iOS 11 versions. I have gigabit Fios, has been tested numerous times on the wired connection with multiple devices and is running at the correct speed. iPads in the house pull about 500 down and 500 up....which is fine given all the potential issues WiFi can have. My iPhone X however can upload in the 500 range but over and over pulls 100 or less down. This has been tested with a Fios Actiontec router, a latest version AirPort Extreme, and a Synology 2600....all with up to date firmware. All were placed in the same spot, set up independently, all with a dedicated connection from the ONT. I am confident it is the iPhone that is the problem, I will be testing tonight with another iPad and with an iPhone 8 (all on iOS 11) and will report what they show as well.
Edit 1: my iPhone X test were run before and after resetting all network settings on iPhone
I am seeing serious issues on iOS 11 (latest version) with WiFi download speeds. I also saw this on previous iOS 11 versions. I have gigabit Fios, has been tested numerous times on the wired connection with multiple devices and is running at the correct speed. iPads in the house pull about 500 down and 500 up....which is fine given all the potential issues WiFi can have. My iPhone X however can upload in the 500 range but over and over pulls 100 or less down. This has been tested with a Fios Actiontec router, a latest version AirPort Extreme, and a Synology 2600....all with up to date firmware. All were placed in the same spot, set up independently, all with a dedicated connection from the ONT. I am confident it is the iPhone that is the problem, I will be testing tonight with another iPad and with an iPhone 8 (all on iOS 11) and will report what they show as well.
Edit 1: my iPhone X test were run before and after resetting all network settings on iPhone