Still maintained?

There have been no updates for some time due to issues with caching. I have not yet decided if I will continue to maintain the plugin or attempt to update it. I am currently investigating a way to create similar functionality with JavaScript.

Great to hear from you.

Yap, I know there are some probs – but I love your plugin. Would miss it! If your core based on https://mobiledetect.net/ ?

Correct. The core is based https://mobiledetect.net/ and can easily be updated with a newer version if you find it is not working as expected.