I saw a few videos on youtube on linking the phone/tablet to the simrad that may help? I am new at this, so cannot offer a solution myself. I assume you want to access data from your phone through your hotspot ? I would be careful how much time I spent linked to the hotspot, I was away from home and used my hotspot to link my laptop to the internet and it burns through data quickly. I got some big bills from Telus. I was looking at the option to be able to access the simrad or lowrance units via bluetooth and view the screen on my tablet when not at the helm.