One of the most common cardiovascular diagnostic test is the electrocardiogram (ECG). However, physicians' skills in ECG interpretation are far from always satisfactory. There is a problem of rendering assistance to a primary care physician in making an operative decision on the tactics of managing a patient with a cardiovascular accident, which is especially relevant in regions where specialized medical equipment has not received mass distribution. The article addresses the issue of rendering assistance to a primary care physician in making an operative decision on the tactics of managing a patient with a cardiovascular accident, if the physician has only the simplest electrocardiograph. We discuss possibility of using mobile phones for this purpose. It is proposed to use them in two ways: for the automated assessment of ECG parameters, which are promptly reported to the paramedic, as well as for transmitting the ECG image to a qualified cardiologist in order to obtain a second (advisory) opinion remotely. We have built and implemented an algorithm for assessing the main morphological parameters of the ECG on a physician's mobile phone when taking photos of 12 leads-ECG on a phone camera. We have shown experimentally that the accuracy of evaluating the morphological parameters of the ECG when working on an image captured with a phone camera is not worse than when working on a digital signal. Using the example of typical emergency medical service scenarios, we have shown that for a consultant cardiologist to obtain an image of the patient's cardiogram with a quality no worse than that of the original cardiograph, it is enough of the phone that does not go beyond the cheap price segment. Thus, the proposed solution is quite applicable in developing countries and in provincial regions, i.e. outside big cities.