You can easily block annoying calls from people you don’t know or people you know but do not want to talk to. No more time is wasting by answering calls from telemarketers and debt collectors. Android users have excellent apps in Google Play Store that can automatically do call blocking, spam call filtering and SMS blocking. The call blocking can be selected based on one number, an area code or the entire world. Some of these apps will automatically create a blacklist found on the FTC/FCC Do Not Call list.
In addition to this, you can define your blacklist and whitelist, and the apps will handle the rest, here is the list of Free Android Apps to Block Unwanted Calls and SMS.
Truecaller: Caller ID, SMS Spam Blocking
Truecaller, without any doubt, is the most efficient and trusted caller ID and dialer(complete phoning app) app that is available on the play store till date. This android communicating app is trusted by millions for finding out unknown calls or blocking spam SMS. The presence of a dominant yet straightforward dialer identifies almost everyone who calls you and helps connect with people who matter. 
Download from PlayStore
Related: How to Block Unknown Numbers on WhatsApp?
Mr. Number-Block Calls & Spam
Mr. Number can block calls and texts from a person, business, a prefix, or the world. Using this app, you can keep the content of blocked texts or trash them. You can browse comments from other users when you get a spam call or text and add ‘Suspected Spam’ to your block list, and Mr. Number blocks them all automatically.
This Android Call Blocker App can intercept calls from private/unknown numbers and hang up or send to voicemail. You can alert your friends by reporting spam calls and texts. The additional feature from this app is the Reverse Lookup numbers that can have at the numbers who called or texted you.
Download from PlayStore
Related: 7 Free Android Apps to Lock Photos and Videos from Intruders
Calls Blacklist – Call Blocker
Call blocker and SMS filter block calls and filter SMS help you to manage a blacklist. You can either block any number from your contacts list, calls, and messages logs or add unwanted number manually. Numbers from the blacklist are blocked quietly and without any signs of a call and you will not be distracted by phone calls or SMS. Calls Blacklist saves all blocked calls and SMS in a journal.
In addition to the blocking feature, the app also produces a whitelist feature. This feature helps in keeping specific contacts from being blocked in future. The blocklist can be sorted alphanumerically or by time. This app supports access from the notification tray and yet has an inbuilt widget for user-friendly interaction. This call blocker app also boasts some convenient setting options, such as the ability to block private numbers or to disable notifications. This app can use to block anonymous (private) numbers, all incoming calls, or all incoming SMS depends on your choice.
Download from PlayStore
Call Blocker – Blacklist App
This application is both call blocker and SMS filter, with a personal and community blacklist to stop unwanted calls. This Android Call Blocking App offer custom call blocker options like blocking calls from private and unknown callers, personal blacklist, do not disturb mode, text SMS filter, Community Blacklist, block call log, etc. Calls are blocked silently without you ever knowing someone called. This Android sms and call blocking app can block robocalls, telemarketers and other spammers automatically. You can set your blacklist based on any phone number or area code, using wildcards and more.
Call Blocker can block violators of the FTC/FCC Do Not Call list automatically and do a Free Reverse Lookup for spam callers to find out who called you. Call Control can also support text message blocking from your blacklist on your Android phone. You can online Sync and Local Backup of your lists in the Cloud, so they are never lost.
Download from PlayStore
Call Blocker
Call Blocker is the most effective call-blocking app that can easily block anyone from calling, sending MMS or texting you. It can block unwanted calls, MMS messages and text messages in a snap, with Blocker. The Android app to Block calls and SMS is continuously working in the background, to block unwanted calls and text messages.
This app features to block unwanted and spam calls, and MMS and SMS/Text Messages and create your Blacklist by creating any phone number or group. You can backup and save all of your profiles, contacts, and logs to your SD card, for easy restoration, or transfer to another device.
Download from PlayStore
Call Filter
CallFilter is an application for incoming control that can block unwanted calls and prevent incoming/outgoing calls from specific numbers. With this call blocking app, you can block incoming calls and block texts from specified numbers, unknown numbers, partial match with the first digit, rejecting all calls except for numbers registered in the address book, numbers not registered in the telephone directory, etc.
You can hide incoming from the numbers that you wish. Hence, this Android app to block calls protects your privacy by keeping secret the incoming/outgoing call log which you don’t want to be opened.
Download from PlayStore
Related: 15 Best Free Reverse Phone Lookup Services
Call Blocker and Text Blocker
Call Blocker and Text Blocker app automatically intercept and reject calls and texts from blacklisted, private or unknown numbers. This Call Blocker App for Android has 5 blocking modes to choose from including Blacklist, Whitelist, Contacts Only, Block All and Accept All.
Unwanted incoming calls are automatically silently sent to voicemail when blocked. A notification Icon is displayed when a call is blocked so you can quickly see if any calls have been blocked. This app can automatically intercept calls and texts from private and unknown numbers. Call Blocker will automatically hang up on or send calls to voicemail, block unwanted calls with a blacklist, custom phone numbers by range, all unknown number that not in your Android phone contacts, etc.
Download from PlayStore
This list of call and text blocking apps will block, send the voice message or answer the calls based on this list. Once you set up this list, then calls from your blacklist never annoy you again. These calls will be either block or direct to voice message without any ring on your phone. The same Andoird apps to block calls or texts can use to keep away all incoming calls or text messages to your Android device.
Related: Best 7 Free Apps to Lock your WhatsApp and Facebook in Android
The most exciting feature for these Android apps is, it can create a blacklist based on FTC/FCC Do Not Call list. In addition to this, these Android apps are useful to block SMS to avoid spam in your Android text inbox. You can define the list of block numbers based on an area code, or use a wildcard to block a set of numbers starting with certain numbers.
None of the so called Call Blocker apps actually work. They will still allow unknown incoming calls in but simply don’t audibly ring your phone. How about a “real call blocker” app that compares incoming phone numbers to your contact list and if not contained on that list will not allow call to even show up (or be recorded) on your notifications. Even a pre-designed message to caller would be nice. Otherwise many companies have multiple phone numbers by which to call you from and all you end up doing is blocking each one as they call your phone.
Personally, I wouldn’t recommend to block all callers except the ones from contact list.
Fantastic blog! Thanks for sharing very interesting post, I appreciate to blogger for amazing post
PLEASE…PLEASE…Is there an app that can automatically, WITHOUT RINGING, respond with a message I design, and then ring through only if someone punches in a digit? For example, my message might say “If you are a family member or a friend, or an authorized caller like police, EMS, a hospital etc then please press 3 for your call to ring through. If you are a salesperson please add this number to your ‘do not call list’.”
It’s ridiculous to think that we should have to add numbers manually to a blacklist. The same jerks just keep calling back using a different number. The FCC spam caller list is great, and I would want that added.
I am in emergency services and sometimes get calls from police and hospitals that are not on my contacts list, and WE WOULD ALL WANT A CALL FROM A HOSPITAL (or the police) SAYING THAT “Your wife (or son, or grandchild etc. has been injured and is at our facility”.
I’m going crazy.
@Grant
I hope this Android app (PlayStore Link) will help you to set automated reply. As per the developer, this app responds to incoming SMS and missed call automatically and is able to set a schedule to send SMS in future time.
I have also been looking the capability.
Most of the important features of these apps have been disabled with recent versions of android.
* SMS Text blocking not supported by Android 4.4/KitKat or later
** Hang up not supported by Android 5.0 or later
Do you know of any apps that are still relevant?
Calls Blacklist works fine at blocking unwanted calls and texts, BUT I can’t receive MMS (pics, photos, vids) from people who ARE in my Contacts. I get the accompanying text but that’s it. Can’t merely disable it temporarily. I have to uninstall the app and use the native messaging app to see the MMS material, then reinstall. Too much hassle.