if u have too many free apps with ads, everytime u play/run the apps,it will download data from net for that ads.

also i found android has background running data automatically such as update refresh interval feature.

Also for email and facebook or any social apps,try to set the refresh time rate higher.

for me 1gb not enough. just monitor ur network usage using 3rd party apps available,then only u can know

belum

if i do sure u can see my pre-order thread

waiting for the RRP confirmation and date reaching out store.