Sometimes the Samsung Galaxy S9 smartphone can become frozen and not turn on.
Sometimes holding Power may also cause the equipment to restart.
Wait about 10 minutes, then make a run at power on the rig.
Hopefully one of these options have helped unfreeze your phone and bring it back to a running state.
FAQ
Will the Reset cause me to lose my data?
In most cases, the soft reset steps outlined above will not cause any data loss.
What usually causes my screen to freeze?
Sometimes poorly written apps can be running in the background and cause freezes.
See about removing some apps you suspect might be causing the issue.
Otherwise, extreme cold or hot conditions can cause problems.
