So... is A-Channel finished or not?
NO, it is not finished.
Why?
The anime finished before the manga:
Anime finished: March 21, 2012
Manga finished: November 27, 2020
MangaUpdates contains information about the anime adaptation and indicates that it is incomplete.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
A-Channel
Aチャンネル
Anime - Base
Release date: April 08, 2011
A-Channel+smile
Aチャンネル+smile（プラス スマイル）
Anime - Sequel
Release date: March 21, 2012
Synopsis
A-Channel centers around the close friendship between Run and Tooru, who have been inseparable since childhood.
Tooru, fiercely protective of the somewhat ditzy Run, decides to follow her to high school.
However, their dynamic shifts as they are introduced to Run's classmates, Nagisa and Yuuko.
The story follows the four girls as they navigate the exciting experiences of high school life while learning to strengthen their friendships and trust one another.
It's a slice-of-life comedy focusing on the everyday adventures and bonds between these four girls as they grow closer.