1. Instant Copy: Invisible Blank Character
Click the button below to copy the Hangul Filler (U+3164). WhatsApp treats it as a valid graphic character, but fonts render it with zero visible ink:
Codepoint: U+3164 (Hangul Filler)
Alternative for Instagram and Discord: (U+2800 Braille Blank).
2. Why Normal Spaces Fail
When you tap the spacebar in WhatsApp, WhatsApp runs a simple string validation check:text.trim().length > 0.
ASCII spaces (Space, code 32) are stripped by trim(), so the green arrow button remains hidden as a microphone recording icon.
However, archaic typographical filler characters like the Korean Hangul Filler (U+3164) or Mongolian Vowel Separator are classified as letter/punctuation categories rather than whitespace, so WhatsApp permits the message to be transmitted.
3. Step-by-Step on iPhone & Android
- Tap the Copy Invisible Blank Character button above.
- Switch to your WhatsApp conversation.
- Tap and hold inside the typing field until the Paste bubble appears.
- Tap Paste.
- The green Send (arrow) button immediately appears. Tap it to send your mysterious empty message!
4. Compatible Apps
This technique also works for:
- Discord: Blank username or invisible status update.
- Instagram: Blank bio lines and clean line breaks without dots.
- Steam & Battle.net: Invisible gamer handles (where permitted by platform terms).
- Telegram & Signal: Sending ghost notifications and testing push connections.