nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqafz9jadkpqzaedvclkth4vcm6q9fsvy6mfddq0ufwjpy4gptlwxqs0ryua
Android?
If so, there is a setting to get back to the good old original "hold the unlock/power button" to display the power options menu.
If its an Iphone then 🤷