Step 1 From the homescreen, tap Settings

Step 2 Scroll to Notifications and tap General

Step 3 Tap Software Update

Step 1 From the home screen, tap Apps

Step 2 Scroll and tap Settings

Step 3 Scroll to the System section and tap System Update

Step 4 Tap Update now

Step 5 If a system update is available, follow the prompts to install the update. Otherwise tap OK.

Settings

Step 1 From the homescreen, tap Settings

Step 2 Tap Cellular

Step 3 Tap the Enable LTE switch to turn the 4G/4.5G connection on

Step 1 From the home screen, tap Apps

Step 2 Scroll and tap Settings

Step 3  From the Connections tab, scroll and tap More Networks

Step 4 Tap Mobile Networks

Step 5  Tap network mode

Step 6 Tap the preferred option. Selecting LTE/WCDMA auto-enables 4G LTE, when available.

Step 7 Tap OK to apply the new settings. The device will reboot.