Evaporator coils are located in the freezer.
Condenser coils are located outside near the compressor.
I cleaned the evap coils.
Did you mean that you cleaned the condenser coils?
Ice builds up on the condenser coil.
Did you mean the evaporator coils?
I defrosted, and ice reformed the next day.
Could you post a photo of the coil iced up?
If the evaporator coil is freezing up evenly then it sounds like you may have a defrost problem.