You can create rules in multiple ways.
- Long press on any message, then tap on the block icon ->. When you long press on one conversation, you can easily select multiple messages and tap on the block icon to create a spam rule for all the senders currently marked.
- In a conversation, tap on the 3-dot-menu on the top right side and then tap on “Block & Report”.
- If you want to block any country or number series go to your block section > sign > 'Block number series' or 'Block an SMS sender name'.