How to Block Unwanted Calls on Android is a post by Cory Gunther from Gotta Be Mobile.
Smartphones
are wonderful tools that are invaluable to our daily lives, but nothing
frustrates me more than getting spam phone calls on my personal cell
phone. Not the throw away home phone, but my actual cell phone.
Chatting
with friends, family, and co workers is extremely easy thanks to
smartphones, but sadly there’s those moments where we get spam calls
from people we don’t know or want calling. Someone speaking another
language or trying to sell some odd piece of a land timeshare and if
you’re like me, you get mad, swear a few times, and hang up. Thankfully
call blocking is a standard feature on most Android devices.

Blocking
unwanted calls, telemarketers, or that clingy X isn’t as easy as it
should be but at least we have options. Almost all Android smartphones
take advantage of this feature, although most have their own unique way
of doing it. Since I use the Nexus 5 and Galaxy S4 Google Play edition
daily, I have stock Android and will start with that, but the general
idea is the same for all devices.
Sadly we can’t just add random
numbers to a do-not-answer list or automatic call blocking list, and
you’ll actually have to make the number a contact first, then get rid of
it. Stock Android has an “All calls to voicemail” feature where you’ll
never hear or get the call and it goes right to voicemail. That’s our
only stock option, but it’s really easy to enable.

Simply
make a new contact with the number you wish to never hear from again,
or if it’s someone you already have in your phone, just go to the
contact. Tap the little avatar person shaped contact edit button shown
below, tap settings, and check the send to voicemail button. It’s that
easy. It’s just a bummer we have to actually make the number a contact
and save it first.
Call Rejection
Samsung
smartphones have a call rejection feature and a rejection list, which
is better than the stock system Google uses in regular Android. Here you
can block numbers from calling you multiple ways, and even add a new
contact directly to the rejection list all in one process.

Alternatively
users can go into any contact they’ve already added, hit menu and tap
settings, and select the “add to rejection list” option to instantly
kill that number from ever pestering you again. Going into the settings
shown above you can manage, add, and even remove numbers if someone gets
back on your good graces.
Read: 25 Hidden Galaxy Note 3 Features
Lastly
Samsung also has blocking mode as shown in our hidden features post
above, which will block certain numbers from calling or even texting
during certain hours. So you can limit just friends and family during
the night, etc.
Call Barring
HTC and Sony devices all
feature Call Barring that works in a very similar way as Samsung’s
rejection list, and can be setup using roughly the same few steps as
outlined above. The regular settings menu, or the Call Settings menu (in
the phone app hit menu > settings) which is where you’ll setup
barring certain numbers.

Here
you can block any incoming or even outgoing calls in tons of different
situations. On the HTC One simply go into the Phone app and tap menu or
settings, and in the settings menu select “Blocked contacts”. Just like
with Samsung above you can add a number right to your contacts and
instantly block it, or add any already saved numbers to the blocked
list. In a matter of seconds all those telemarketers will never be able
to bother you again.
Read: How to Cut, Copy & Paste on Android
Sadly
these are the only options readily available for Android, and stock
devices only redirect these calls to voicemail, which could be a bad
thing when you get a 3 minute voicemail from some automated junk. So,
since we want to cover all the bases, you can head to the Google Play
Store for 3rd party solutions. There’s an app for that!
3rd Party Blocking Apps
There’s
tons of different apps readily available from the Google Play Store to
block calls. My personal favorite is called Mr. Number to block calls or
texts, but that’s just one of many. Mr. Number even will let you choose
to hang-up, send to voicemail, or add an exception if you’d like
specific instructions.

Advanced
Call Blocker & Tools is another awesome app that is essentially a
swiss army knife of calling apps. Lets you block calls, make fake calls
with names and even fake numbers, hide your call log and much much more.
This does it all, and blocks any number with ease.
Or the simple
Call Blocker app that’s top rated on the Play Store is another option.
It even lets you back up contacts, and the blocked list with ease if
you’re switching to a new phone and don’t want to recreate your blocked
list all over again.
Next time you have some random number
pestering you, like the Spanish telemarketer I’ve experienced this week,
use one of the many steps detailed above to rest at ease.