The iPhone 6 Plus has an Achilles heel

The iPhone 6 Plus is a fantastic phone with an unfortunate flaw: It’s a data hog.

iPhone 6 Plus users consume twice as much data as iPhone 6 users, according to a Citrix report.

That’s because people are using the 6 Plus like they would a tablet, watching tons of video and playing games.

Citrix says iPhone 3GS users consume about a tenth of the data as 6 Plus users, though it isn’t clear how many people are still using the older, five-year-old handset.

Data shows how owning an iPhone 6 Plus can be a lot more expensive than an iPhone 6 over the long-term.

High-speed LTE cell networks (like 4G) are also enabling smartphone users to stream video like never before. Netf lix streams one video for every four YouTube videos over LTE networks, according to Citrix. On 3G networks, the ratio is one Netf lix video for every seven YouTube videos.