Oppo A37 – How to Block Unwanted Calls and Text Messages

Having an Oppo A37 smartphone provides you with great communication capabilities through calls and text messages. However, you may sometimes receive unwanted calls and texts from telemarketers, robocalls, or even harassing contacts. Blocking these effectively is important for privacy and reducing distractions. Fortunately, the Oppo A37 offers easy ways to block both calls and text messages.

Blocking Unwanted Calls on the Oppo A37

There are a few straightforward methods to block unwanted calls on your Oppo A37 device:

Using the Built-In Call Blocking Settings


  1. Open the Settings app on your home screen
  2. Scroll down and tap on Call
  3. Tap on Call rejection
  4. Toggle the switch for Block anonymous numbers to block calls from private or hidden numbers
  5. Tap on Blocked numbers to view and manage your block list

You can also block all unknown numbers to reject calls from numbers not saved in your contacts.

Using Third-Party Call Blocker Apps

If you want more advanced call blocking capabilities, install a call blocker app like Truecaller or Hiya from the Google Play Store. These provide options to:

  • Automatically block known spam numbers
  • View identities of unknown callers
  • Easily add specific numbers to block
  • Block entire regions/countries
  • Stop robocalls
  • And more!

Via Your Mobile Carrier

Contact your mobile carrier (e.g. Verizon, AT&T) to inquire if they provide network-based call blocking services. These can automatically detect and block robocalls before they even reach your device. However, availability and pricing varies between carriers.

Blocking Unwanted Text Messages on the Oppo A37

You can block unwanted text messages sent to your Oppo A37 using these methods:

Block Messages from Specific Contacts


  1. Open the Messages app
  2. Tap the 3-dot menu > Settings > Blocked contacts
  3. Tap Add and select the contact(s) you want to block
  4. Confirm by tapping OK

Any messages from blocked contacts will no longer be delivered.

Enable Keyword Filtering of Text Message Content

You can automatically filter out texts containing specific keywords commonly used in spam messages:

  1. In the Messages app, tap the 3-dot menu > Settings > Block & filter
  2. Toggle Filter spam by keywords
  3. Tap on Spam keywords to add additional words/phrases to filter

This will block texts containing those spammy keywords.

Use Third-Party Text Blocker Apps

Apps like Messages Blacklist or SMS Blocker provide enhanced text blocking capabilities such as:

  • Block texts from unknown numbers
  • Add numbers easily from call logs or contacts
  • Schedule when to block texts
  • Stop texts from entire area codes/countries
  • Export and import block lists.

So install one of these apps for greater control over blocking text messages.


Having the ability to block unwanted calls and text messages is vital for reducing distractions and protecting privacy. The Oppo A37 offers direct call and text blocking options within its settings. Additionally, specialized call blocker and text blocker apps provide advanced functions to stop robocalls, spam texts, harassment from contacts, and more. With the techniques outlined here, you can effectively control the calls and texts you receive on your Oppo A37 smartphone.