I tried everyhting, unrooting my device, taking sim off and putting it back on, Turning radio off and on. It still wont work. It's a prepaid red color koodo sim card that I didn't pay for a month and now i'm going to use it again but suddenly there's no signal, no connection... Please help!
You should still be seeing a signal strength reading even if you haven't topped up your prepaid account. If you see an 'x' beside the signal strength indicator or the message 'emergency calls only' you may need a new SIM card. If all that stuff is working, then Chad's comment is likely the cause.
I checked my imei and it is compatible with the sim. My phone just can't connect to any network. I wan't to top it up by calling like I used to do but when I cal it say Mobile network not available. Tried manually connecting to networks but it wont connect. So I just need to buy a new sim then but there's no x beside the signal indicator and yes it says emergency calls only but I can't call... Thnx for the response.