Shared Data Plans Aren’t Always Cheaper

With the holiday shopping season upon us, many consumers are looking to buy new phones for themselves or as gifts — which means choosing a new plan. As unlimited phone data plans become less available, some wireless carriers are working on transitioning customers to shared talk and data plans.

This summer Verizon (VZ) and AT&T (T) unveiled new shared data plans, touted as a better value for users than traditional family shared or individual plans with added-on data packages. Shared data plans provide various amounts of communal data across multiple devices. All phones, tablets, gaming consoles, hot spots and laptops included in the plan share a bucket of data for one monthly fee — which, in theory, is meant to cut costs.

AT&T's Mobile Share and Verizon's Share Everything plans offer customers unlimited talk and text along with several levels of data for up to 10 devices. T-Mobile and Sprint also offer data shares — even unlimited data packages — but they only cover up to five devices and their coverage networks aren't as extensive as AT&T and Verizon's.

The Big Question

Still, the big question is: Are these shared data plans really cheaper? And are they better than the unlimited plans offered by Sprint (S) and T-Mobile (DTE.DE)? The answer: it's complicated (and likely made purposely so by the carriers). Whether it makes financial sense to switch to a Verizon or AT&T shared data plan depends on your data and device needs. Ultimately, you need to have a firm idea of how much data you and your family use each month.

Consumers are, so far, buying into the shared-data idea. Nearly two million AT&T subscribers signed up for mobile share plans in the first five weeks of availability, the company said in its third-quarter earnings call. And more than a third of those customers chose 10-GB data plans or higher.

Verizon is seeing similar trends. On its latest earnings call, Chief Financial Officer Fran Shammo said more customers than expected are switching from unlimited plans to the Share Everything plan — and attaching more devices. More important, to accommodate the extra devices, users are opting for higher-tiered data plans, which obviously cost more per month.

We crunched some numbers and one general rule we found was that shared-data plans may be a better deal if your family has more than four devices. Here are three different plans to help you cut through the confusion and decide if going the shared route is right for you.

- A couple: two smartphones and a tablet = three devices
- A family with two parents, a college student and a middle school student: four smartphones, 1 tablet and a mobile hotspot = six devices
- A family with two parents, two grandparents, one teenager and a child in elementary school: four smartphones, two basic cellphones, two tablets, one hotspot and one gaming console that connects to the Internet =10 total devices