With the great success of deep learning, the demand for deploying deep neural networks to mobile devices is growing rapidly. Similar to what we do in desktop platforms, utilizing GPU in mobile devices can benefit both inference speed and energy efficiency. However, most existing deep learning frameworks do not support mobile GPU very well. The difficulty lies at the difference between mobile GPU architecture and desktop GPU architecture. It means special effort is required for optimizing on mobile GPU. The non-trivial extra work eventually results in the poor support of mobile GPU in most deep learning frameworks.