And you can use the grid lines on your phone to find the symmetry of a shot. Just be sure to avoid making these common urban photography mistakes. If you have the option of enabling a 4x4 grid ...
Which are no grid, a 3x3 grid, a 4x4 grid, and a golden ratio grid. I tried to keep the subject as near identical as possible in all four shots, just moving my phone left, right, up, or down ...