This mobile is having a lot of network connectivity issues. Samsung product m35 supports 6000 mah battery backup but even without using it at all, the charging of the mobile automatically drops to 15 - 20%.
Kindly complaint to Samsung customer care support through Samsung Members app as error report also send log files along with this error report for this issue and wait for next update it's maybe fix by Samsung team soon. If you like please accept it's a as solution it's help to other users also, click on 3dots in my reply section and click on accept solution. Thanks.
