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Can our carriers track how many messages we send in WhatsApp?
Is the connection not encrypted?
The contents of the news item duly noted. There are a few interesting facts besides the cost difference namely - technology of the two modes.
1 - MI - Uses the Mobile Data frequencies to transmit the messages.
1.1 - If the Mobile Data Signal is suffering from high signal to noise ratio
(Poor Signal) then your MI Message WILL be delayed.
1.2 - Mobile Data Signal frequencies generally suffer from small footprint issues.
(2.1Ghz/1.8Ghz & 2.6Ghz).
2- SMS - Uses the GSM frequencies to transmit the messages.
2.1 - These frequencies (900Mhz) have a greater footprint.
3- Concluding that if your phone is active in poor data area your MI message delivery will be delayed or not delivered, but the SMS message has a greater chance of being received in poor GSM signal areas
I prefer using SMS and will try use all of any SMS bundle. Cannot see the need to change to MI because of peer pressure.