What does 開いた本 look like on SoftBank?

On SoftBank it is the design shipped in 2014, shown above at full size. Older revisions are listed beneath it.

When did SoftBank add 開いた本?

SoftBank first drew 開いた本 in 1999, released 1999年1月1日.

SoftBank Corp. has shipped 8 versions of 開いた本. Each is dated, so you can see when the design changed.

SoftBank 2000

SoftBank shipped a new design for 開いた本 in 2000, released 2000年1月1日. The previous design is shown beside it.

✳ marks a release that redrew this emoji. The rest re-shipped the design unchanged.

What does 開いた本 look like on SoftBank?: On SoftBank it is the design shipped in 2014, shown above at full size. Older revisions are listed beneath it.
When did SoftBank add 開いた本?: SoftBank first drew 開いた本 in 1999, released 1999年1月1日.
How many times has SoftBank redrawn 開いた本?: SoftBank Corp. has shipped 8 versions of 開いた本. Each is dated, so you can see when the design changed.