Manually selecting a network provider for a sim card

Sometimes when a sim card stops working in either a router or a mobile phone, manually selecting the network provider can resolve the issue. This guide is applicable to most Samsung phones which we have such as the A20, A34, A35, M23 etc:

• If the sim card is in a router, remove it and put it into a mobile phone
  
  
• On the phone go in to Settings and Connections:
  
  

• Tap 'Mobile Networks' and select 'Network Operators':
  
  

• Toggle the 'Select Automatically' slider to 'Off':
  
  

• Wait while your phone scans available networks, this can take a few minutes
  
  
• Select the appropriate network from the list that appears:
  
  

• Wait while it connects and registers, you may get a confirmation message on the screen once this is complete
  
  
• Once it has connected, turn the 'Select Automatically' slider back to 'On' and return to the home screen
  
  
• Put the sim card back in to the router, wait a few minutes and then test the connection again