Tell me more ×  I have installed Traffic Monitor to check how
much data is transferred between my phone and the rest of the
world. The traffic is categorized by application, but there is
also the category "system traffic", to which all uncategorizable
traffic belongs. Strangely enough, the "system traffic" consumes
the lion share: 2 of 2.8 MB within several hours of idling (over
wireless LAN).  Skype is off, only E-mail (K-9 + standard
client), the news+weather widget and the browser are running.
For these apps, a consumption of 0.8 MB is shown. Still a lot,
but I can handle these. Apart from these: Traffic Monitor,
Settings, Google Services (what's that for precisely?) and the
Android keyboard.  What is responsible for the rather heavy
traffic here? What are typical "traffic eaters" that could fall
into the "system traffic" category? Is there a way to disallow
communication while the phone is not used (blank display)?
Purpose: Estimate the required data volume or enable a pay-per-
data connection. This quest