If you want your computer or TV to support 4K resolution, you need it to run at a refresh rate of 60 hertz or higher. If you're watching on a computer, you need to use Microsoft Edge, Apple Safari, or theNetflix app for Windows to get the highest resolutions.

The Apple TV and the Amazon Fire TV will only be able to watch content in 4K. It's possible to stream through the website at 720p. We can't tell you everything about every streaming service, but we can tell you what we mean in the apps you sign up for.

To make sure your apps are configured to deliver the best possible streaming quality, you should dig into your settings pages. If you tap your profile picture on the Disney+ app, you'll be able to set the video quality for streaming over a cellular network, playing from the titles you've downloaded to your device, and much more.

You should check your wi-fi.

It's important that you have the internet speeds to support the resolutions.

Fast.com via David Nield

Every streaming service has the ability to adjust the video quality in response to the available bandwidth on the cellular network. It's possible that the internet connection on your device isn't strong enough to give you the best picture.

If you don't know what speeds you are getting to your devices in the corners of your home, it is a good idea to test them. Fast.com is one of the many options we have for all of your devices. You just load the site and it tells you the speed of your internet connection, there are no settings to set. You should try to run the test a few times to make sure you get an accurate reading.

You have to check the minimum speeds recommended for the services you are using. If you want to watch a steady 4K video stream, Apple TV+ recommends a speed of 25 Mbps or above, and if this isn't reached you might notice the quality starts to degrade.

The usual rules for keeping wi-fi speeds as fast as possible include keeping your routers as close to your devices as you can, consider connecting some of them via wired Ethernet connections, and limit the number of gadgets you have connected to the internet at any