Why black bubbles turn your text into capitals
White circled letters (Ⓐ ⓐ) came into Unicode early, both cases. The black circled and squared letters (🅐 🅰) arrived in 2009–2010, largely from Japanese broadcasting and phone symbol sets, which only needed capitals, so lowercase becomes capitals in those styles. Parenthesized letters (⒜ 🄐) have both cases, but there is no parenthesized zero. Some apps show 🅰 🅱 🅾 🅿 as colorful emoji instead of black squares, because those four doubled as emoji.
Questions
- Why does 🅰 show as a red emoji?
- A, B, O and P in the black-squared set are also emoji (blood types and parking), so some apps draw them in color.
- Can bubble text have lowercase?
- White bubbles (ⓐⓑⓒ) do. Black bubbles and squares are capitals only.