Are push notifications normally slow?

Question

I have a persistent problem with notifications to all apps on my OnePlus6+ where they typically are delayed 30-60s, often I will get several notifications showing at once or when I unlock my phone suddenly I get notifications.


I can test with gmail, Slack, Messenger, WhatsApp and any other app where I have a version open on my PC at the same time


I've only ever owned Android smartphones, and only from OnePlus so I do not know if this is just how Android works or is a 'feature' of OxygenOS/OnePlus hardware. But it's happened across multiple versions of Android and hardware for several years.


It suggest PUSH notifications are not really being PUSHed but polled, like the phone is only checking periodically.


I see it whether on WiFi or cellular networks and it's quite irritating. Can anyone give me any information or advice about it?


— Mr. Boy | Sources

Answer

That push messages are not delivered in real-time is because of the battery optimization Android applies (this optimization may additionally also be applied by the Google servers providing the push messages).


The main idea behind the function to concentrate/group multiple notifications is that if you have multiple apps running waiting for incoming push messages it may end up that your device has to wake-up every few seconds and check for incoming push messages. A device that wakes up that often has a negative effect on on the battery so Google decided to group the messages and only check in every few minutes especially when the phone is not used for a certain time.


If I remember correctly this feature was introduced first in Android 7 and more and more extended with every new Android version.


— Robert | Sources

Q & A

Will Samsung Pay still work on the Gear S3 if you root your Samsung phone?
Local Phone contacts not syncing with google
Sync ext SD to USB OTG **without** using a PC
Opening links within apps causes bad switch to Chrome in Nougat
insufficient memory error but i having enough memory
Deleted chat - can it still have a back up on google drive
How to stop SMS spam from mobile operator?
Why doesn't su have its setuid bit set?
Escalate privileges in ADB shell to fix build.prop permissions
Can Google Daydream View function as a Cardboard for unsupported phones?
How to install TWRP if usb device not recognised?
Which Google apps can be deleted or disabled without harm to the system?
Galaxy S7: Difference between various European versions
Has TWRP been replaced by another custom recovery image?
Displaying profile photo on others' phone when called
How To Root Samsung A510F?
Headphone problem
Cannot use WhatsApp in Gingerbread anymore
Annoying functionality of suggestions in newer version of Google keyboard
Can't Restore Samsung Galaxy S3 To Factory Firmware

Topics

2D Engines   3D Engines   9-Patch   Action Bars   Activities   ADB   Advertisements   Analytics   Animations   ANR   AOP   API   APK   APT   Architecture   Audio   Autocomplete   Background Processing   Backward Compatibility   Badges   Bar Codes   Benchmarking   Bitmaps   Bluetooth   Blur Effects   Bread Crumbs   BRMS   Browser Extensions   Build Systems   Bundles   Buttons   Caching   Camera   Canvas   Cards   Carousels   Changelog   Checkboxes   Cloud Storages   Color Analysis   Color Pickers   Colors   Comet/Push   Compass Sensors   Conferences   Content Providers   Continuous Integration   Crash Reports   Credit Cards   Credits   CSV   Curl/Flip   Data Binding   Data Generators   Data Structures   Database   Database Browsers   Date &   Debugging   Decompilers   Deep Links   Dependency Injections   Design   Design Patterns   Dex   Dialogs   Distributed Computing   Distribution Platforms   Download Managers   Drawables   Emoji   Emulators   EPUB   Equalizers &   Event Buses   Exception Handling   Face Recognition   Feedback &   File System   File/Directory   Fingerprint   Floating Action   Fonts   Forms   Fragments   FRP   FSM   Functional Programming   Gamepads   Games   Geocaching   Gestures   GIF   Glow Pad   Gradle Plugins   Graphics   Grid Views   Highlighting   HTML   HTTP Mocking   Icons   IDE   IDE Plugins   Image Croppers   Image Loaders   Image Pickers   Image Processing   Image Views   Instrumentation   Intents   Job Schedulers   JSON   Keyboard   Kotlin   Layouts   Library Demos   List View   List Views   Localization   Location   Lock Patterns   Logcat   Logging   Mails   Maps   Markdown   Mathematics   Maven Plugins   MBaaS   Media   Menus   Messaging   MIME   Mobile Web   Native Image   Navigation   NDK   Networking   NFC   NoSQL   Number Pickers   OAuth   Object Mocking   OCR Engines   OpenGL   ORM   Other Pickers   Parallax List   Parcelables   Particle Systems   Password Inputs   PDF   Permissions   Physics Engines   Platforms   Plugin Frameworks   Preferences   Progress Indicators   ProGuard   Properties   Protocol Buffer   Pull To   Purchases   Push/Pull   QR Codes   Quick Return   Radio Buttons   Range Bars   Ratings   Recycler Views   Resources   REST   Ripple Effects   RSS   Screenshots   Scripting   Scroll Views   SDK   Search Inputs   Security   Sensors   Services   Showcase Views   Signatures   Sliding Panels   Snackbars   SOAP   Social Networks   Spannable   Spinners   Splash Screens   SSH   Static Analysis   Status Bars   Styling   SVG   System   Tags   Task Managers   TDD &   Template Engines   Testing   Testing Tools   Text Formatting   Text Views   Text Watchers   Text-to   Toasts   Toolkits For   Tools   Tooltips   Trainings   TV   Twitter   Updaters   USB   User Stories   Utils   Validation   Video   View Adapters   View Pagers   Views   Watch Face   Wearable Data   Wearables   Weather   Web Tools   Web Views   WebRTC   WebSockets   Wheel Widgets   Wi-Fi   Widgets   Windows   Wizards   XML   XMPP   YAML   ZIP Codes