Visual Studio Maui IOS

Our iOS apps certificate has been revoked frequently. There are no possibilities that our member revoked deliberately. Does someone have idea what is the cause of revoking. And please let me know the act in using xcode that cause revoking certificate if any.

Battery life on my iPhone 6 has degraded significantly since the iOS 9 upgrade. Has anyone else noticed this and are there any suggested fixes?My phone usually lasts all day with moderate use, and usually is around 30-40% charged at the end of the day. Since the iOS 9 update, I can only get 3-4 hours from full charge before it hits the 20% threshold.

I'm going to transfer an app to another account.Developer guide says:Associated client SSL certificates for push notifications aren’t transferred. If the app uses Apple Push Notifications service (APNs), the recipient needs to create a client SSL certificate using Member Center to reenable it.https://developer.apple.com/library/prerelease/ios/documentation/LanguagesUtilities/Conceptual/iTunesConnect_Guide/Chapters/TransferringAndDeletingApps.htmlDoes it meens I have to update an app and existing users have to update app to use push notifications?I think it's not so because the client SSL cetfication needed to send request to APNs. So only I have to create a new certification and install it to my server to connect to APNs. Is that right?And I want to know if app transfer changes the Bundle ID.I think if the Bundle ID changed and end users updated an app, push notifications will become to not work.I hope you will be able to provide the information.

The iphone 6 plus battery usually last for 1 - 2 days. After intalling IOS 9 it wouldn't last for 1 day. Is there a way to enhance the battery life.

I have install iOS 9.0 in my iphone 6 and OS 2.0 on apple watch. But I plan to downgrade iphone 6 to iOS 8.3. But I am afraid of connection between apple watch and iPhone. Can anyone give me some suggestions ?

It's very strange, I have one device (iphone6) with iOS 8.4 (b3 and now b4), which shares the AppleID with another device (iPhone 5s - iOS 8.3). Both are using the same iCloud settings and iTunes library/login for iTunes match. Both back up to the iCloud backup but as different devices. Suddenly (soon after switching the iPhone 6 to 8.4b3, I *think*) the telephone call list of my iPhone 5s got duplicated on the iPhone 6 but not the other way round. After I had phoned my 5s the other day to find it my 6 showed missed call from [my iphone 6] in the night. This is puzzling. Anyone else encounter this?