
How to block a phone number It is very necessary when you are constantly bothered by advertising calls, credit card opening advice, real estate sales calls that you do not need. In this article, Digital Experience will summarize ways to block phone numbers on iPhone, Android so as not to affect personal and work life.
Table of Contents
How to block strange phone numbers on iPhone
For iPhone you can block calls in call history, in contacts and unknown numbers
How to block phone numbers on iPhone in call history
It’s very simple, you go to “Phone” will show the calls. After each phone number there will be an exclamation mark (!).
You will click on the phone number you want to block the call below and select “Block This Caller”.
This way they will not be able to contact, text, facetime or any other way. You don’t even know that they called you!
How to block phone numbers on iPhone in contacts
Similarly, in “Application” your phone in the “Phonebook” then select the name of the person you want to block. Then click on “Block This Caller” choose “Block contact”.
How to block unknown unknown phone numbers
This is very useful when you actively block a phone number before being disturbed. Operate as follows:
- Step 1: Go to “Setting” choose “Phone” or “Message, for the case of selecting “Phone” You will also not receive annoying messages from them.
- Step 2: Select item “Contact is blocked”.
- Step 3: Next to block any call or message from a subscriber you choose “Add New“. Then enter the phone number you need to block.
- In case you want to remove any number from the block list, select the “Fix“. Then select the sign icon “-” next to it to delete is okay.
In addition, for iPhones, you can turn on the do not disturb feature, the icon is a crescent moon. This way, when an unknown number calls to your phone, the screen will not light up, will not ring, and will not vibrate. Basically this contact can still call you. So, you can apply this method when you don’t want to be bothered by calls.
Do you know: The easiest way to transfer contacts from SIM to iPhone
How to block phone numbers on Android
How to block a phone number in call history
For phones running the Android operating system, the manufacturer allows the freedom to customize for each device. In general, how to block numbers on Android is as follows:
- Step 1: Go to the “Calls” application and select “Recent”.
- Step 2: Select the phone number you need to block and then click the exclamation point icon (!). Continue to select the item “Block” and then click “Block”.
How to block Android phone numbers in contacts
- Step 1: Go to the “Contacts” application and find the number to block.
- Step 2: In the upper right corner with three dots, select “Block contacts” then click “Block”.
In addition, in the case of blocking strange phone numbers, you also do the same.
- Step 1: Go to the call app. Select the corner 3 dots button and then select Settings.
- Step 2: Select “Block Numbers” and then select “Enable Blocking Unknown Callers”
How to block phone numbers from Viettel’s application
If you use Viettel sim, you can use Anti Disturb application. This is an application developed by Viettel Telecom that supports users to block unwanted calls and messages from other subscriber numbers. The main function of this application is as follows:

- Allows you to block calls and messages from subscribers outside the phonebook.
- Block calls and messages from subscribers you subscribe to.
- Actively set the block time frame.
The steps are as follows:
- Step 1: Download and install the Anti Disturb application.
- Step 2: Enter your correct phone number to get the verification code sent. Then choose “Log in”.
- Step 3: Select “Registration” to use Viettel’s Anti-Disturb service. Note, you need to turn off Wifi and turn on 3G to register for the service.
- Step 4: Depending on your need to block calls, you choose the feature and the time frame to block accordingly. For example, Block calls outside of contacts, block by phone number …
The above are very simple ways to block phone numbers and block strange calls on iPhone and Android Experience No want to share with readers. Please apply tips this to no longer be bothered by unwanted calls!