Clone phone can have slight variations on the screen so yes an original part will not be compatible. You will have to find out what the knock off name is and try to order the part. Still do some code tests to verify that you actually do have a cloned phone. The techs could have been wrong.
Lets say it is Summer time and you want to set your ceiling fan to spin the correct direction. When looking at your fan from below, the fan should be turning counter clockwise, or forward. The reason for this forward spin direction is so you can get as much airflow as possible when it is hot outside.
Running the fan in the reverse direction draws cooler air from near the floor and blows it toward the ceiling. At the same, the fan moves warm air trapped near the ceiling and pushes it out toward the walls and down to the floor.