Repeat it a few times and all your data will be refreshed. If the option is off making sure that you turn it on and then after two seconds turn it back off. All you have to do is open settings > general > background app refresh. Whenever your iPhone is connected to cellular data or WiFi the toggle background App will refresh the data of all the applications that are running in the background. Turn on the notification setting according to your requirements on the lock screen or home screen so you can easily get the notifications. Select the mail application that you have been using.

You have to follow the given steps to resolve this issue. It means that you have to open up the email application repeatedly to check your emails and it can be very annoying. The push application is working on the device but you are not receiving the notifications for the email. Now select Add account and enter your email details so you can sign in to your account once again. Select delete account and in the alert window tap on delete. Open Settings > Mail, Contacts, Calendars and select the account that is causing problems. Instead of going through different types of settings it is better that you delete your mail account and reinstall it. If you have restarted the mail app and it is not yet working there are chances that issue is in your mail settings. Wait for at least 1 to 2 minutes and launch the mail app once again. When you have reached the mail, if you will have to swipe up in order to close it. Swipe left so you can find the mail application. It will give you the preview of all the applications that you have been using. In order to make it possible press your home button twice. All you have to do is restart the Mail App and the emails will start responding. There are chances that the email push is not working on the iPhone.

Why is my email not updating