Most networks don't charge more for MMS than SMS. This is a 90's concept. However most do charge a hefty extra for data plans.Pictures sent via iMessage do not cost you the mms charge that most networks carry nor does it scale the picture down in the way an mms does!
I could say encryption too. Do I need to explain that too?
I thought it was the case already, wasn't it? That for every iMessage sent, a SMS copy was sent as well in background so as to prevent misreception if ever the recipient happens to use something else than an iPhone. But in the case you describe, basically one should always default to SMS unless absolutely and positively sure the recipient uses an iPhone.I wish there was the option to hold down and send a SMS as an iMessage and a iMessage as SMS for every message you send.
I remember trying to send iMessages to various iPhones, and it seemed to randomly and silently fail from time to time, the reason why I am still using SMS. No time to debug while on the road.
It's more likely for people not to have a data plan rather than no message plan.Some people don't have a message plan. I know some people who have requested I don't ever send text messages to them because it costs them money. I don't really have a choice to turn of iMessage, otherwise they don't receive my messages.
Alternatively, those people could use Whatsapp, Kik, Facebook Messenger or other messaging services.
In which case you already answered your own question: iMessage is probably unencrypted when it comes to warantless surveillance, and if you rarely send pictures and even then don't really care about scaling, then stick to SMS/MMS!I don't care about picture scaling, or encryption, and I have unlimited texting and plenty of data. So why would I want to put up with those stupit dots and the other drawbacks of imessage?