well to know your IMEI NUMBER
just dial *#06# and the command ussd code will bring out a 15digit number
Then thus;

Step 1: Search for "IMEI tracker" in Google Play, find "AntiTheft App & IMEI Tracker All Phone
Location" on your phone. Make sure your phone is
running on Android 4.4 or higher. Then, start
installing the app.

Step 2: After finishing the installation, run the app. Give all the permissions that the IMEI tracker App
asks for, including contacts, calls, storage, SMS, and
location. In case you need to track your phone, all
these permissions will be necessary to activate full
functionality.

Step 3: Press "continue" to move on after watching a short commercial. This free IMEI tracker App is
great, but the only problem is that it contains ads
that you have to watch. Unluckily, you cannot skip
the ads, if the video is not yet loaded, you will not
be able to go to the next step.

Step 4: Input the IMEI number of your lost Android phone, check your input, and tap "Track". A small
window with a list of places will appear, indicating
the location and the close proximity of your phone.

WOW THIS IS NICE, THANKS