How best to convert this tablet design with two sets of tabs to a smartphone form factor

I have this mockup of a UI designed for Android tablets that I need to convert to a smartphone app. It incorporates two sets of tabs, one vertical set on the left in black and the other horizontal set across the top. Both tab sets serve to help filter a huge amount of data quickly. Speed and ease of use in bright outdoor sunlight are top priorities. This app is used to update vehicle option data for car dealerships.

What is the best approach to take here?