AW: To use Spotify, you need online access of the Spotify server. Therefore a Spotify user account is required to access the server via smartphone Hotspot (see Z-N328 manual).

Streaming audio content via smartphone hotspot is a “data transfer heavy use” which requires a suitable monthly subscription. For Spotify Streaming you need about 40MB per hour with „normal quality“ (96kbps) and about 70 MB with „high quality“ (160 kbps). So make sure your smartphone contract offers a corresponding monthly data quota. Exceeding the monthly allowable data volume usually leads to throttling of the data bandwidth by the provider.