iPhone's Messages app has quietly built one of the more capable sticker systems around, tucked into the App Store drawer most people never fully explore. If your iMessage sticker tray still only has the handful of default packs iOS ships with, there's a lot more available just a few taps away.
Where to find iMessage sticker packs
The sticker drawer lives inside the Messages app itself — tap the App Store icon next to the text field, then browse the dedicated iMessage apps and stickers section. 
A cute cartoon cat with a heart on its nose — view on SoundGIFs From there, sticker packs install directly into your tray without needing to leave the conversation you're in.
Free vs paid packs
Most iMessage sticker packs are free, though some come from paid App Store apps or offer premium expansion packs as in-app purchases. It's worth browsing the free options first, since the built-in library covers a surprisingly wide range of moods and styles before any purchase becomes necessary.
What makes iOS's sticker system different
Unlike WhatsApp or Telegram, iMessage stickers are distributed through full App Store apps rather than simple downloadable packs, which means the ecosystem leans more toward polished, professionally designed sticker sets. It also means iMessage-specific stickers don't carry over cleanly into conversations with Android users, since the feature depends on Apple's own messaging protocol.
Sticker packs vs Memoji stickers
Beyond downloadable packs, iOS also generates stickers automatically from Memoji and Animoji, giving users a personalized option alongside anything downloaded from the App Store. These work the same way in the sticker tray but pull from your own customized avatar instead of a pre-made design.
Making custom stickers from photos
iOS includes a built-in tool for turning any photo into a sticker — press and hold on a subject in a photo, lift it from the background, and it becomes a reusable sticker automatically. This works especially well for creating personal, inside-joke stickers pulled from real photos rather than relying only on downloaded packs.
Combining downloaded and custom stickers
A well-rounded sticker tray usually mixes both: a few solid downloaded packs covering common reactions, plus a handful of custom photo-based stickers for anything more personal or specific to your own group chats.
Managing a growing sticker collection
As more packs get added, the tray can get cluttered fast. Periodically removing packs that never get used keeps the ones you actually reach for easier to find, the same basic upkeep that applies to any messaging app's sticker packs collection over time.
Conclusion
iMessage's sticker system is more capable than its default tray suggests, once you know where to look for new packs. Browse SoundGIFs' sticker collection by mood and occasion for more ideas worth adding to your next iPhone update.