If you have activated your iPhone without a SIM card (Hacktivated), your Push notifications don't work. It exists Push Fix 2.0 but paying, here is Push Doctor from anethema, a solution 100% free.
Must be tested by persons who have Push notifications issues.




Notes :

• Uninstall all old Push Fix before this one.
• Repo : http://www.cmdshft.ipwn.me/apt/
• Install Push Doctor 1.01
• More info