how to take a picture of a picture without the reflection ?

sorry not sure what sub to ask this in , but maybe someone knows a good “technique” for this here .. i want to take a picture of a photo print with my phone but its always reflecting light or like showing a reflection of my shadow holding my phone ?? if that makes sense . i just want a clear picture of my printed picture/photo print , im not sure what its called but im sure you guys understand what i mean.