Unsnap (verb)

1. To unfasten or to unsecure something with a snap.
2. To open or to detach something by releasing a snap.

Origin:

From the combination of prefix "un-" meaning not and the verb "snap" meaning to fasten or to secure with a snap.

Examples:

1. She unsnapped the button on her jeans.
2. He unsnapped the case to take out his phone.
3. She unsnapped the snap on her purse.
4. The baby unsnapped the pacifier from his mouth.
5. The camera lens unsnapped from the body.