Your stickers purchased or downloaded from Sticker Gallery are linked with your WeChat account:

1. Your stickers won't be deleted after you upgrade WeChat to higher versions.

2. You can use your stickers on different devices, for example, you can use them on both Android and iOS devices.

3. You can view your stickers on your purchase history (Located in Me > Sticker Gallery > tap the gear icon in the upper right) when you log in on another device.