I recently acticated it yesterday and the calling seemed to work yesterday since one call came in. Then today, it doesn't work anymore. I tried texting too, same result. The connection bars seem to disappear after a few minutes. I already restarted, take sim out and even the airplane mode. It's not connecting still. Should i wait 24 hours? I assume it'd take less hours by now. I'm using Nexus 5 from Fido so I assume it should be unlock and fine.