You will be prompted to create a Certificate Signing Request (CSR), and given instructions on how to do it. In the text box, select the App ID you created previously. Under Services, select Apple Push Notification service SSL (Sandbox & Production). With the following function I have solved the problem. Add a certificate on the Apple Developer Portal. I had to check apple response, I was sending push to invalid tokens and Apple disconnected me from server. The provider API supports JSON Web Token. I'm in sandbox, so I wonder if there is any limit for sandbox environment, because I have read that the APNS service has no limit. Apple Push Notification token-based authentication is an alternative to using provider certificates to connect to APNs.

You should see Apple Sandbox Push Services: (your bundle id). Now, in the AppDelegate class, let’s create a function, registerForPushNotifications (), that requests permission from the user to allow the app to send push notifications. The problem comes when I need to send the same notification to all of my users, the notifications only get to the first users of the loop. Local, push notifications, multimedia messages, and iOS 15 changes. First, let’s add something Go to the AppDelegate.swift file and import UIKit to import Apple’s UserNotifications framework. I'm developing an iOS application that uses push notifications, I have implemented the app and the server side and it works great if I send just one or two notifications. Go to the Apple Developer Center, then go to Keys page, then create a new key by entering a name and choosing Apple Push Notifications service (APNs).

Apple sandbox push notification