I'm using dataman to trace my data usage. But beware when there is an update for the apps. I noticed that after the upgrade of the apps, it will lose count of the data usage b4 the upgrade.

My usage for last month is 850Mb, however when I check my dataman tracking, it only shows 350Mb. I traced back the upgrade of the apps and found the source of the problem. So be extra careful!!

I'm using Papago and Waze almost everyday, I believe both don't consume lots of data especially Papago, it still can work if u switch off the data. Whatsapp may consume lots of data if u received and sent lots of photos and videos and messages. My wife got a shock last months becoz of whatsapp..especially during festive seasons, sending greetings videos and messages to friends and family.

To study this issue more details:

1) try monitor ur data or apps activities, download ur own data monitor apps.

2) If u hv lots of social media like twitter, facebook, whatsapp, instagram, foursquare, etc working in the background, u may get another shock later. But what the hack to have a smartphone without using those and getting the latest update in time?? That's the dilemma here.

Either you switch to a higher data plan or dicipline urself on the monitoring... switch off all the background apps and it will not only save ur battery and also save ur heart from another "BILL SHOCK" attack..

Cheers and enjoy the i-device..