Read all about it here:What does this mean?
If I send a WhatsApp message of 5kb, will they then take 25kb usage of my available data bundle?? Or is it per session (ie when you restart your phone or something), what does it mean exactly, how does this work?
http://mybroadband.co.za/vb/showthr...kb-not-5kb!-(since-24th-April-)-is-this-legal
It is per session. I don't think it has been established how often the sessions are billed if the connection is not dropped, but we've seen that when the data connection disconnects it is counted as a session.
So if you only receive one 160 byte WhatsApp message during an hour, and then your connection drops, you will billed for 25 kilobytes.
Problem is some people are experiencing more than 100 disconnections per day.
Edit: Seems to be particularly bad on BlackBerry:
My Blackberry connects once every 15 minutes and downloads 101 bytes (if there are no email or whatsapp messages). Cell C subtracts 25KB each time
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