Android already allows you to do it without using an application, so it is now easier to block the numbers that are annoying or that are simply a recorder.
Steps to Block calls on Niu Phones
Open the Phone application on your Android Marshmallow, Nougat or Oreo. Go to the menu that is on the top right and which are the three points.
Find the option that says Call Settings, there you will see the section Call Block where you must enter. In some Android models you will have to enter the Configuration option to find the Call Block.
Depending on the version of Android you have, you will see several options such as: Blocked numbers, Filter by digit and Private number. So that you do not receive calls or messages from that number go to the first option.
In the next screen you will have to press on the "+" symbol or on Add a Number . Now enter that annoying number.
Steps to block a call with Application help
You are likely to receive calls from numbers you do not know, which is usually very annoying. Fortunately they can be blocked in a very easy way, so in this tutorial we will let you know all the steps you must follow to block calls on Android and thus not get angry.
Steps to block calls on Android
Step 1.- The first thing you should do is go to the Play Store and download the Mr. Number-Block calls & spam application , it's free.
Step 2.- Once you execute it, it will show you all the recent calls, if you select one, it will open a menu where you can block it, you just have to press the "Block" option .
Step 3.- Also, you can create your list of blocked calls , just press the three-point button (configuration) in the upper right corner and select the Block List option .
Step 4.- From now on you can start to block calls by numbers, contacts, the lada or, the most recent ones.
It is worth mentioning that at any time you can unlock numbers and contacts. As you can see it is very easy to block calls on Android.