I feel like ive tried everything to fix my push notifications and they still arent working. I am running 3.1.3 on an iPhone 3G. First I tried SAM and activating the phone, and I got the msg saying it was activated, but still no push notifications.

Then I tried Push Doctor off cydia, downloaded it and still no push notifications, I re-installed it twice and I still get no notifications even after a hard reboot

Can anyone help?