diff --git a/lib/push/crypto.js b/lib/push/crypto.js
--- a/lib/push/crypto.js
+++ b/lib/push/crypto.js
@@ -128,7 +128,6 @@
 
   let unencryptedPayload = {
     ...rest,
-    aps: { sound },
     merged: alert,
     badge,
   };
@@ -140,7 +139,7 @@
   try {
     const unencryptedSerializedPayload = JSON.stringify(unencryptedPayload);
 
-    let encryptedNotifAps = { 'mutable-content': 1 };
+    let encryptedNotifAps = { 'mutable-content': 1, sound };
     if (codeVersion && codeVersion >= 254 && codeVersion % 2 === 0) {
       encryptedNotifAps = {
         ...encryptedNotifAps,
diff --git a/lib/types/notif-types.js b/lib/types/notif-types.js
--- a/lib/types/notif-types.js
+++ b/lib/types/notif-types.js
@@ -207,16 +207,27 @@
   +'apns-push-type': 'background' | 'alert' | 'voip',
 };
 
+type EncryptedAPNsSilentNotificationsAps = {
+  +'mutable-content': number,
+  +'alert'?: { body: 'ENCRYPTED' },
+};
+
 export type EncryptedAPNsSilentNotification = $ReadOnly<{
   ...SenderDeviceDescriptor,
   +headers: APNsNotificationHeaders,
   +encryptedPayload: string,
   +type: '1' | '0',
-  +aps: { +'mutable-content': number, +'alert'?: { body: 'ENCRYPTED' } },
+  +aps: EncryptedAPNsSilentNotificationsAps,
+}>;
+
+type EncryptedAPNsVisualNotificationAps = $ReadOnly<{
+  ...EncryptedAPNsSilentNotificationsAps,
+  +sound?: string,
 }>;
 
 export type EncryptedAPNsVisualNotification = $ReadOnly<{
   ...EncryptedAPNsSilentNotification,
+  +aps: EncryptedAPNsVisualNotificationAps,
   +id: string,
 }>;