Changing font size in WhatsApp is a simple task and here’s how you can do that on Android:
Hit Overflow menu (three vertical dots) > Settings > Chats.
Now, you can see three options – Small, Medium (default), and Large. All options are self-explanatory, right?. Select the one you prefer.
That’s it. Now, you can see the font size change in the chat screen of contacts and groups.
Remember that font size change affects your device only.
If you want to revert, follow the above steps (1-3) and then choose “Medium.”
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