Complex sentence: Not long after, Claire and Phil catch Haley talking on the phone which prompts Phil to use the computer right away, however Haley reveals to them she was only talking to a fake phone that she carved out of a bar of soap and colored black.
Split into simpler sentences: Not long after, Claire and Phil catch Haley talking on the phone which prompts Phil to use the computer right away. However, Haley reveals to them she was only talking to a fake phone that she carved out of a bar of soap and colored black.