You can always try this. The SlingPlayer application does support the TV out feature as long as your phone is capable of this.
If this does not seem to work, you can always use a device we refer to as a connected device. These devices have our application pre-loaded onto it so you are able to connect to your Slingbox.
This link below directs you to our website that has all the supported devices you can use:
Hope this helps!
Sling Media Moderation Team