Spam calls makes feel frustrated sometimes. These Spam calls often interrupt our daily activity and these Spam calls are leads to some scam calls too, which may have chance of loosing of our money too. In this article we are going to know How To Block Spam Calls On Android Mobile. These Spam calls are also comes from promotional and marketing too.These Spam calls makes us feel irritated.
REGISTER WITH THE NATIONAL DO NOT CALL REGISTRY:
Now you can Block Spam Calls On Android Mobile by registering your number with NATIONAL CUSTOMER PREFERENCE REGISTER(NCPR). This is the Great method to stop spam calls on ur device. This NCPR service allows users to optout of getting/ receiving the telemarketing calls to your android device.
TO ACTIVATE THE DND SERVICE:
1. Firstly we need to open our SMS app and we need type “START” Message and need to send it to 1909.
2. After Sending the sms to that number , you will get some list of categories, such as banking,hospitality.
3. You will get unique Code for Each Option.
4. You need to respond with the code to the certain category of calls you need to block in your android device.
5. After Selecting the certain category, you will get a confirmation message and the DND service will be active within 24 hours on ur device.
6. This service helps us by blocking unsollicited commercial calls from third party and these service will not block useful calls from banking or network service providers. This service only blocks unwanted calls.
ACTIVATE DND SERVICES BY TELECOM OPERATORS:

Now you can activate the DND services directly by your telecom provider:
JIO: Go to the My jio app > Settings > Service Settings> Do not disturb. And now select the categories that you want to block.
AIRTEL: You need to visit airtel.in/airtel-dnd. and now enter your mobile number and then otp , now you need to select the categories that you want to block .
BSNL: You need to send “start dnd” to 1909 number from your BSNL number, then u need to select the categories you want to block