I found on phone.report the following description:
On Android go to the number in the phone book or the call list, tap the Menu key ☰ and select the option "Add to block list" or "Block contact "(depending on the manufacturer).
1. Press the menu button on your Android to start. Select "System settings."
2. Scroll down the systems screen. Select "Battery."
3. Look through the list of entries here. You can click on any of them to get more information. Each entry has a percentage listed next to it. This will tell you how...
Yes, you can locate a lost phone. Use "Find My iPhone" or "Android Device Manager". If this is not possible, you can use these services to lock your phone and show a text message like "Lost my phone, call me 201-222-3333".
Does it helps?
Your phone is NOT in Nigeria! If the location is not available, then device manager shows this map as a default position!
Longitude and latitude values of this map is (0,0)
Maybe this "trick" is done by the phone. In other words: Now you have another phone, so now this trick doesn't work.
> *67
Callers may also dial *31# before the number they wish to call.