If you're looking to pick up a new phone from Amazon Wireless, an interesting deal just popped up: activate mobile hotspot during your purchase, get a $100 Amazon Gift card. Doesn't matter if you're a new customer or you've been with your carrier for 10 years and are getting an upgrade -- this deal applies to everyone; any hotspot-ready phone, any carrier.
Alternatively, If you're not eligible for upgrade or don't want to get a new phone just yet, you can get a similar deal on standalone hotspots. If you pick up a mobile hotspot device instead of a new phone, you can still score a $50 Amazon gift card. Pretty rad.
For full details on this deal, check out Amazon Wireless.