Today I've experienced very very, unusual data consumption (4GB - foreground) within one hour. According to the android build-in network statistics. I'm only able see it as an spike in the usage. I have no idea where this data went. Was it downloaded, uploaded, where and why? Basically I've lost my monthly allowance within couple of minutes. All same cards in background, nothing changed since the morning, where I was browsing some new pages. No downloading big files, no uploading. Please help.