If your dialer isn't working or you need more detailed info, you can find it in your system settings: How To Check IMEI on Android Phone
The IMEI(s) will automatically pop up on your screen. You can usually long-press the numbers to copy them for later. Imei Check Android
The "universal" way to pull up your IMEI doesn't require digging through menus. Open your (dial pad). Type in *#06# . If your dialer isn't working or you need