You can choose to get push notifications when someone likes or comments on your post. If you have notifications turned on, you can also choose accounts that you want to receive notifications about. To turn push notifications on or off:

Instagram app for Android and iPhone:
Tap

or your profile picture in the bottom right to go to your profile.
Tap

in the top right, then tap
Settings.
- Tap Notifications and adjust your settings.

Receive notifications about specific accounts
To receive notifications about specific accounts that you follow:
Tap

or your profile picture in the bottom right to go to your profile.
- Tap Following in the top right.
- Next to the account tap
(Android) or
(iPhone), then tap Manage Notifications. - Tap
next to the feature that you want to turn on notifications for.