My Iphone 4s randomly lost network service. Continuously says "Searching for Signal" "No service". It has connected a few times to the Koodo network today, but would only allow me to call my voicemail once before reverting to "No Signal". Is the koodo network having issues in the Ottawa area? Or has my phone's antenna died? I have checked to make sure 3g/cell data is enabled (it is) and I have also checked to make sure my balance owing is $0 (it is). EDIT: I have also reset the network settings without any luck. Thanks in advance for the help!