991 waze / spotify via aux issues!

[240Cup]

I've just acquired one of these Belkin Iphone Lightning audio cables in order to plug in my iphone to aux output in my 2012 911 (has bluetooth but not streaming etc) which is fine allowing me to run Waze and Spotify simultaneously (Waze map/alerts on the phone screen and Waze alerts/directions/Spotify playing through the Car BOSE) but it doesn't seem to charge the phone which drains quite quickly running these apps.

Does this sound right? Am I faced with occasionally unplugging this cable and using a charging cable for a while, thus losing the Waze and Spotify? This will be a right pain on long journeys!

Have googled it and can't see a definitive answer anywhere nor on the spec sheet of the cable!!

Have also posted in the hi-fi section, hoping some technical whizz might know the answer.