Is there a way to frank parcels from DHL online without a laptop or printer?

Eg with the smartphone and if so how

I mean that at Rossmann you can also print out from your mobile phone, for example

IT WORKS WITH DHL
Franking Christmas parcels with your mobile phone
You can find out how easily and in just 3 steps it works here:

https://www.dhl.de/de/privatkunden/pakete-versenden/angebot-online-frankierung/mobile-paketmarke.html

Tip: Hermes also offer this service.