I received a prepaid phone from my grandchildren and I activated it through the prepaid activation site. I entered the SIM, the IMEI and then paid for the plan using my credit card. Here's the issue ... when I turn the phone on it still says:.. No SIM card/Emergency calls only. The phone is a Samsung (from Koodo) and when I turn it on it says GT-S7560M (whatever that means). Can anyone HELP this granny out please. Thanks!