iPhone gives you three grouping styles
Automatic groups notifications by topic or conversation thread within an app, By App collapses everything from that app into one single stack regardless of topic, and Off shows every notification as its own separate entry -- so it's worth trying each one to see which keeps your lock screen most readable.
Want a deeper dive into Android notification groups?
This guide covers the basic setup on both platforms. If you use Android and want to go further -- fine-tuning notification channels per category, marking a conversation as priority, or silencing a whole group at once -- see the dedicated Android notification groups guide.
Frequently Asked Questions
Can I set grouping differently for each app?
Yes -- on both iPhone and Android, notification grouping is configured per app, so you can group a busy messaging app while leaving a quieter app ungrouped.
Does grouping mean I miss individual messages?
No -- grouping only changes how notifications are displayed together. Expanding a group still shows every individual alert, so nothing is hidden or deleted.