、、。
The woman in the red dress ignored the man in black and called her friend on her cell phone.
Literal
Red dress [genitive-の] woman [topic-は], black-suit [genitive-の] man [object-を] ignore, mobile-phone [by-で] friend [to-に] called.
A cinematic scene-setter. 黒服 ('black clothes,' 'guy in black') is a compound noun commonly used for someone wearing a suit — often in the context of yakuza, bodyguards, or suspicious-looking characters. The 服 ('clothes') is paired with a color for a quick clothing-description shorthand: 赤いドレス (red dress), 黒服 (black-clothed man). ケイタイ is the katakana spelling of 携帯 ('mobile phone'), a common spelling choice in casual writing. The verb 友達にかけた (literally 'called [on the phone] to a friend') uses に because 電話をかける ('to make a phone call') takes the recipient with に.