2 sentences

1. 他用指尖轻轻触碰了屏幕。

   tā yòng zhǐ​jiān qīng​qīng chù​pèng le píng​mù.

   He touched the screen lightly with his fingertip.

   Source: Dong Chinese Dictionary

2. 指尖传来一阵细微的、像针刺般的疼痛。

   zhǐ​jiān chuán​lái yī zhèn xì​wēi de, xiàng zhēn​cì bān de téng​tòng.

   A slight, needle-like pain came from the fingertip.

   Source: Dong Chinese Dictionary