it's better we keep this feature only for desktop version. Mobile experience is different with desktop one. if a feature exists in the desktop platform it doesn't mean we need to have the same for the mobile platform. This feature will make visual noise in telegram mobile IMO
If you create a folder and you select only bots in this folder, telegram will add you an image of bot (see the image below) I've added emojis in folders name but the icons are automatically set by telegram.
Icons between Telegram Mac (written in Swift) and Telegram Lite Mac (which is the multi-platform version) don't fully match! It's definitely needed some cleanup/sync between all versions and hopefully icons on mobile as well (like in Messenger Plus).
William West, IV
I agree with having separate icons for different folders, but I think colors would be just as important. Setting certain colors for certain folders would help a lot also.
😈 Rafael M. RC 😇
Since folder feature exist, you CAN use emojis instead text to name folders. That way, you can see quickly what's content of each folder.