🤔 Did you know that you can use OpenVK on older cell phones?
Not so long ago we adapted our API for VK4ME client, and the developer in return added official OpenVK support.
So get your old cell phone out of your drawer, install VK4ME (you can get the latest version here - http://vk4me.crx.moe/) and test it!
The client does not work much (for example, not open documents or history of dialogue), but still we will be glad to your bug reports and pull requests.