How some Android phone users got earthquake alert on phones for Bay of Bengal quake

Tremors of an earthquake were felt in Kolkata, Kolaghat, Kharagpur, Kalyani, Bhubaneswar, and Cuttack early Tuesday morning. The earthquake, which measured 5.1 on the Richter scale, happened at 6:10am in the Bay of Bengal off the coast of Puri, Odisha.

Some people in Kolkata and adjoining areas received a notification about the earthquake on their smartphones even before they felt the tremors, while many others did not.