Your jailbroken iPhone might also be having notification problems, you might not be getting notifications on Facebook, mail, what’s app and other programs that might be sending you notifications. You will definitely be having those kinds of problems if your iPhone is not activated by an official carrier, like at&t.
You have to download a program called push fix, via cydia.To do this you need to do the following
1.Go to Cydia
2.Manage, sources and add the source http://cmdshft.ipwn.me/apt/
3.Look for Push Doctor
4.Download it and reboot!