An example of a button to undo edits using the mobile interface 📩 on my Microsoft Lumia 950 XL with Microsoft Windows 10 Mobile 📱 using the Microsoft Edge mobile internet browser, in order for this button to appear one has to follow the instructions from <a class="external text" href="https://en.m.wikipedia.org/wiki/User:FR30799386/undo">W:EN:User:FR30799386/undo</a> by copying <div class="mw-highlight mw-highlight-lang-js mw-content-ltr" dir="ltr"><pre><span></span><span class="nx">mw</span><span class="p">.</span><span class="nx">loader</span><span class="p">.</span><span class="nx">load</span><span class="p">(</span><span class="s1">'https://en.wikipedia.org/w/index.php?title=User:FR30799386/undo.js&amp;action=raw&amp;ctype=text/javascript'</span><span class="p">);</span>
</pre></div>, clicking on <a href="//commons.wikimedia.org/wiki/Special:MyPage/minerva.js" title="Special:MyPage/minerva.js">this link</a>, and then pasting the code. WARNING ⚠: As of writing this this code is still beta software, so each and every revert should be checked after saving. In case there is a bug, its creator requests its users to report it to <a href="https://en.wikipedia.org/wiki/en:User_talk:FR30799386" class="extiw" title="w:en:User talk:FR30799386">w:en:User talk:FR30799386</a>.
Various authors, please see <a class="external text" href="https://commons.m.wikimedia.org/wiki/Special:History/Commons:Help_desk">here</a>, <a class="external text" href="https://commons.m.wikimedia.org/wiki/Special:History/Commons:Centralized_discussion">here</a>, <a class="external text" href="https://commons.m.wikimedia.org/wiki/Special:History/User_talk:Donald_Trung">here</a>, and <a class="external text" href="https://commons.m.wikimedia.org/wiki/Special:History/User:Donald_Trung/Huichang_era_Kaiyuan_Tongbao_cash_coins_on_Wikimedia_Commons_(%E6%9C%83%E6%98%8C%E9%96%8B%E5%85%83%E9%80%9A%E5%AF%B6)">here</a> for attribution.
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<a class="external text" href="https://commons.m.wikimedia.org/w/index.php?title=Main_Page&amp;mobileaction=toggle_view_mobile">Wikimedia Commons</a>.