I use a MiFi as a mobile hotspot. Costs $50 a month for 5G of data. I use it a lot while on the road, but hardly ever when at home. I found out my new 4S has hotspot capabilities and since my phone plan is unlimited data, does it make sense to cancel the MiFi and just use my iPhone as a hotspot? Or are there benefits to the MiFi over the hotspot? Thanks!