Hacker News new | ask | show | jobs
by gpvos 2419 days ago
Yes, that surprised me too. But do you have any idea how your phone's alarm can ring when the battery is dead? Does it have a second battery?
1 comments
smichel17 2419 days ago
Most phones turn off before the battery is truly 100% dead.
link
cesarb 2419 days ago
IIRC, some of these old phones do have a second "coin cell" battery, which keeps the clock running even when the main battery is removed (the SIM card is usually below the battery, so you have to remove it to exchange the SIM card).
link