Manganese (II) phthalocyanine MnPc is known for its interesting magnetic properties and diverse coordination chemistry, but little is known about its conductivity. In our previous work, we observed how introduction of a permanent  magnetic field during deposition modifies the microcrystalline structure of the growing MnPc films. In this paper, we have shown that the magnetic field, together with the substrate temperature, is responsible for the lateral current in  the two-terminal MnPc-based cells with interdigital contacts to change, while the influence of atmospheric environment and illumination is much less noticeable.