I have an two Oukitel phones, one is a K4000 and the other a K6000. Both are unlocked. When I put the SIM card in, the phone reads the SIM card but it wont connect to the carrier network. It always says "Cannot connect to this network right now. Please try later". Does anyone know if there is a way to get this phone to work, or are they simply not compatible with the Koodo network..