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Android and notifications
Almost every "the app never reminds me" complaint comes down to the same thing: the system is entitled to delay a notification, and the manufacturer skin on top of it is entitled to put the app to sleep entirely. This is how that works and what to do about it: which permissions arrived in Android 12 and 13, how an exact alarm differs from an ordinary one, why Xiaomi and Samsung are stricter than the rest, and what can be tuned in notification channels.

How to set a reminder on Android without installing anything
Five ways to set a reminder on an Android phone: Google Tasks, Calendar, Keep, voice with Assistant or Gemini, and Samsung’s Reminder app. Based on Google and Samsung help.
Learn moreiPhone notifications not working: 7 settings to check
Seven places where iPhone notifications get lost: the app’s permission, a Focus, Scheduled Summary, silent mode, Apple Watch, Low Power Mode. Paths from Apple Support.
Learn moreDo Not Disturb on Android: exceptions and calls that get through
Why notifications break through Do Not Disturb on Xiaomi and POCO, how to let certain callers ring and keep your alarm. From Google, Samsung, Xiaomi and Huawei help.
Learn moreTecno and Infinix app freezer: what it does and how to undo it
What Freezer does on HiOS and XOS, how to unfreeze an app, why background settings stop working after an update, and what to check when downloads stall with the screen off.
Learn moreAndroid not receiving texts or SMS arrive silently: what to check
Texts missing entirely or arriving without a sound: signal, block list, spam folder, storage, default SMS app, Huawei and Honor per-SIM notification settings, Do Not Disturb.
Learn moreSamsung sleeping and deep sleeping apps: why notifications stop
What sleeping and deep sleeping apps mean in One UI, how many days before Samsung puts an app to sleep, where the lists live and how to wake an app for good.
Learn moreGmail and Yandex Mail notifications not working on Android
Why Gmail notifications are not working: it only notifies for Primary and stays silent without sync. Yandex Mail sets them per folder. From Google’s and Yandex’s help.
Learn moreWhy your alarm did not go off on Android: eight reasons
An Android alarm goes off in Do Not Disturb only if alarms are allowed, and on silent only with vibration on. Six more causes, from Google and Samsung help.
Learn moreWhatsApp notifications not working on Android: what to check
Why WhatsApp notifications stop on Android: the permission, background data, battery limits, Do Not Disturb, muted and archived chats. From WhatsApp’s own help.
Learn moreTelegram notifications not working on Android: fixes
Why Telegram notifications are not working on Android: a muted chat, a second account, low priority, background limits, the phone’s skin. With Telegram’s own labels.
Learn moreAndroid notification channels: why apps cannot get louder
How notification channels work, why an app can never raise its own importance after install, and why reminders deserve more than one channel.
Learn moreAndroid notifications not showing up? Here is what kills them
Xiaomi, Samsung and Huawei put apps to sleep by their own rules. Where the autostart and battery settings live, and a test that shows whether a change worked.
Learn moreRecurring reminders, and why the 31st breaks half of them
Why every-two-weeks and every-Tuesday behave differently, what an app must do on the 31st in February, and why a missed repeat must not pile up.
Learn moreWhy Android delays reminders and how to get exact timing back
Why notifications on Android arrive minutes late, what changed in Android 12, and which permissions an app needs so a reminder lands to the second.
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