Samsung's Galaxy S6 and S6 Edge do not have a removable battery, hence users cannot soft-start their smartphones -- like they did earlier by removing the battery -- when their devices freeze or are unresponsive.

Moreover, when the Galaxy S6 or S6 Edge become slow or errors show up while operating the camera, a restart is required. However, users are unable to perform a soft-start as the phone is unresponsive.

Mentioned below are a few steps that would help restart an unresponsive devices. The methods would also help users diagnose if there are any hardware defects in the handset.

How to restart Samsung Galaxy S6/S6 Edge when unresponsive

  • Method 1: Long press the Power button for a few seconds, follow instructions displayed on the screen. Press and hold Galaxy S6 power button for a few seconds, then follow the on-screen instructions.
  • Method 2: Long press power key and volume keys together for 7secs, in case the handset is not responsive.

Alternative methods:

If the device is still unresponsive, follow the alternate methods mentioned below:

  • Long press Power button for 20secs or more and the smartphone would restart.
  • Long press Volume Up button for a few seconds, then hold the power button without releasing the Volume Up key and the device would restart.
  • Long press Volume Up button for a few seconds, press and hold the Power and Home keys without releasing Volume Up key, which can also restart the device.
  • Press and hold Volume up + Volume down + Power buttons until the screen comes alive.
  • Long press Volume Down button and Power button + Home buttons at the same time. This combination should activate the display. In case you encounter a "download mode" on the screen, long press the power button to resort to a normal reboot.

These methods can also be used to diagnose hardware defects on the S6 and S6 Edge. In case the smartphone fails to restart, visit the Samsung Store to find out if there is a hardware issue with device.

[Source: Android Authority].