First of all, make sure you know why the arrest was made against you and what offense was charged to you and to which police station you will be taken. Then ask the police to show his / her power card before the arrest is made against you. Make sure that you are allowed to make at least 1 phone call to your spouse / parents / siblings / friends, to inform them of any arrests you have made. Most importantly, please ask the nearest spouse / parents / siblings / friends to get a lawyer service as soon as possible.