Choose from: a. Once everything is off, you'll be able to tell the tell-tale sign that the device is running. If you hear a beeping sound, the device is powered on. b. Once you've removed the back cover and exposed the back, take out the phone's battery. Check your phone's esn. c. Unscrew the battery, which usually comes out the front. Make sure not to release the charger cable. d. If your battery is free from charge, it is safe to empty your phone and take it out, but if not, contact the local phone company and ask for a replacement battery. You should also check if your phone has a paper cover.Choose from options above and answer: What most naturally follows?

How to check esns
Remove the back cover of your phone.
Take off the back cover of your phone by prying it off the casing.
Remove your phone's battery.
Answer:
b.