An Oppo A53 user in India has seemingly suffered considerable injuries after the budget smartphone apparently exploded while in his pocket. The rear of the Oppo A53 is completely devastated and there are noticeable burn marks on the case. It seems the 5,000-mAh battery is the likely culprit behind the smartphone blast.
https://www.notebookcheck.net/Oppo-A53-user-suffers-injuries-after-phone-explodes-in-pocket.543742.0.html