Today I faced a problem on my iPhone where I couldn’t get push notifications to work using Go and STC routers. I have finally found a fix. It turned out to be a DNS problem and all you have to do is to set the DNS on your iPhone.
I hope this will be useful to anyone having this problem.
So first of all we need to click Settings.
Click on the blue arrow next to the Wi-Fi access point name. In the DNS option we need to clear the value and enter: 18.104.22.168 then go back to Settings and click the home button.
Push notifications should be working by now.
Push notifications can be used to notify you withÂ any new messages on IM messengers, Mail, and a lot of other apps.
Note: if you need to revert at any time all you need to do is delete everything in the DNS field.
Thank you for reading.. waiting for your replies!
Source: Ping! Tips.