While leaving at home it's advisable to set an important app hidden if you think trading bitcoin or having them will lead you to great danger especially within my country where they suspect lots of boys to be internet fraudster.
In my country there are different types of law enforcement agents, popularly known as the police. There are those who do their work intelligently and this percentage of people are very low. They try to protect lives and property and ensure that we have a corrupt free economy. But the majority of them are crooks who are looking for slight opportunity to victimize and extort the innocent citizens. When you meet this set of criminal policemen, you will be surprised that they all know the phones that hides applications and the ones that has different interface of operation. They will use their own personal tools to unlock your phone even against your privacy. They do this so that they will charge the victims very high amount of money and let them go. If care is not taken when you give them your phone, after searching and discover that they see nothing they will buy themselves in-plant some exhibit in your phone in order to implicate you.