I've had my Z Force Droid Edition for almost 2 years, and over the last 2-3 months my data usage has increased drastically. With bonus data included I have 18gb a month. I used to finish each month with about 5-6gb left over. The last 2-3 months I've come close to running out every month (and I did run out one month....it was painfully slow on the reduced speed.) I've had no change in usage, in fact I use hotspot for tablet way less than I used to, but I am still using more data. No new apps that show as hogging data, wiped cache (and used apps at home first so they didn't redownload info over mobile data.) Just seems odd that my usage increased 50% suddenly.