You will need
  • Phone, computer, Internet access.
Type in the search program the question "How to restart the phone". For more accurate and relevant answer to the question add the brand of your phoneand, since each model has its own button combination, resulting in a restart with preservation of all data.
Of the many suggested answers choose the material that applies to the model of your phone. Be careful with forums – some users post material that is far from reality and are not tested by them in practice. It is better to refer to the official help pages on the manufacturer website phones.
Generate recommended actions according to the guide to restart the phoneand the correct model and series.