If reminders on a vivo or iQOO phone arrive late or not at all, the phone's background power management has restricted the app. Let the app use power in the background, turn on Autostart for it, and lock it in recent apps. Then check exact alarms and lock screen notifications.
Buzzley is the example below, but these settings decide whether any reminder or alarm app rings on a vivo phone.
Why vivo phones delay reminders
vivo's Funtouch OS and OriginOS watch how much power each app uses in the background and restrict the ones they consider heavy. A reminder app that needs to wake up at a set time can get caught by this. Two more things get in the way:
- Apps without Autostart can't start themselves after a restart, so they can't set their alarms again.
- Clear all in recent apps closes everything that isn't locked.
How to fix it on a vivo phone
The names of these menus change between versions and between Funtouch OS and OriginOS. Where a name differs on your phone, look for the closest match, or search Settings.
1. Allow high background power use
In the battery settings, open the background power consumption management page (its name varies by version), find Buzzley and choose not to restrict it.
2. Turn on Autostart
In i Manager, or under Settings > Apps > Autostart, switch Buzzley on. Buzzley can then set its alarms again after a restart.
3. Lock Buzzley in recent apps
Open the recent apps screen, then pull Buzzley's card down or long-press it, and choose Lock. Clearing all apps then leaves it running.
4. Allow exact alarms
Search Settings for Alarms & reminders, pick Buzzley and allow it. Without this permission Android can deliver a reminder late.
5. Show notifications on the lock screen
In Buzzley's notification settings (from Settings > Apps > Buzzley), allow notifications, banners and lock screen notifications.
What Buzzley does on a vivo phone
Buzzley's Android app treats vivo and iQOO as one brand. Its Alarm not ringing? screen shows the first three steps under Steps for vivo phones, with Open settings buttons. On many vivo phones those buttons open the background power page and the background startup list directly. If your version doesn't allow that, they open Buzzley's app info page or the system battery page instead.
The screen also runs four checks, each with a Fix button when it fails: "Notifications are off", "Reminders may ring late", "Alarms can't fill the lock screen" and "Battery saver may delay reminders". Find it in Settings > Full-screen alarms > Alarm not ringing?, or tap Help on the banner Buzzley shows on its home screen when a setting blocks reminders.
Once the settings are right, a reminder in the Alarm style rings full screen on the alarm volume and passes through silent mode and Do Not Disturb.
Test it with a two-minute reminder
After changing the settings, check them with a real reminder. In Buzzley, add a reminder for two minutes from now and set its Notification style to Alarm. Lock the phone, put it face down and wait. It should ring full screen on the alarm volume at the minute you set. If it rings late, open Alarm not ringing? again and look for a check that still fails. If it rings on time with the screen locked, also try once with the phone left alone for a longer stretch, for example a reminder an hour from now, because some battery savers only step in after the phone has been idle for a while.
Common questions
I can't find the background power page. What now?
Search Settings for "background" or "power consumption". If nothing matches, the Open settings button in Buzzley's Alarm not ringing? screen tries the known locations for you.
Does a restart undo anything?
No. These settings stay. Buzzley sets its alarms again after a restart, and they ring even before you unlock the phone, as long as Autostart is on.
Is a forced stop a problem?
Yes. Force stop in app info, or a cleaner that force-stops apps, cancels Buzzley's alarms until you open it again. Leave Buzzley out of any cleaner or boost tool.
My phone is a different brand
OPPO and realme and Xiaomi, Redmi and POCO have their own guides. For other phones, start with the general Android battery guide.
Related guides
- OPPO or realme reminders not going off?
ColorOS and realme UI limit background apps. Allow background activity and auto launch, then lock the app in recent apps so reminders ring.
- Xiaomi, Redmi or POCO reminders not working?
MIUI and HyperOS stop background apps. Turn on Autostart, set Battery saver to No restrictions and lock the app in recent apps so reminders ring.
- Huawei or Honor reminders not going off?
Huawei and Honor manage app launches automatically. Switch the app to manual launch, turn off battery optimization and lock it in recents.
- Android reminders not going off? Check battery
Battery savers are the usual reason Android reminders ring late or not at all. Four settings to check, in the order that fixes most phones.
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