Ensure that the device is turned off.

Holding the device firmly, wedge a plastic opening tool between the speaker cover and the device. Then pry up to separate it from the device.

Then begin to firmly pry up the plastic cover with the plastic opening tool.

The backing is connected with adhesive so force may be necessary.

Be careful to not damage the plastic in any way.

Once you can fit your finger under the plastic cover, begin to slide your finger down the cover while simultaneously prying up.