Voltage at USIM_VDD

Hi everyone there. I found out that USIM_VDD of my EG800Q-EU will go to 0V after some time. I followed exactly as the schematic given, but have no idea how to solve this issue. Does anyone face similar issue before?

Example schematic
This is the schematic from hardware design datasheet

These are the signal I captured using oscilloscope:

When detected SIM

The USIM_VDD falls to 0V after some time