This is wrong, it has nothing to do with the device capability to receive a live signal. Here is the official guidance:
You don’t need a TV Licence if you or anyone at this address:
never watch or record programmes on any channel as they’re being shown on TV or live on an online TV service, and
never download or watch BBC programmes on iPlayer – live, catch up or on demand.
This could be on any device, including a TV, desktop computer, laptop, mobile phone, tablet, games console, digital box or DVD/VHS recorder.