I was on an obsolete plan with an old cell phone (Samsung u410, no data). I went to a Koodo kiosk, bought a Moto G, and switched to the $35/month plan (minimal data). I have not yet activated the SIM on the Moto G. The Samsung U410 still works, but when I tried to send an SMS message exceeding 140 characters (might have been just under 160), it repeatedly failed. When I editted away some text until it was well under 140, it succeeded to transmit. My understanding is that the Koodo system converts overlength SMS to MMS. Why would I no longer be able to transmit this?