Tech Five: Apple, Twitter earnings on deck

Brace for a big day in tech earnings, with several notable names expected to share quarterly results after the markets close Tuesday.

Let's look at tech stocks to watch:

Apple. The iPhone maker is forecast to report drops in revenue and earnings when it discloses second quarter results. Concerns continue to linger over iPhone sales following a report Apple is cutting production for the second straight quarter.

Twitter. Investors are looking for any signs of strong user growth when the social network reports first quarter results after the bell. Twitter boasts more than 300 million monthly active users.

T-Mobile. Shares of the wireless carrier are up in morning trading after adding more customers during the first quarter. T-Mobile reported earnings of 56 cents a share, well above the 10 cents a share projected by analysts polled by S&P Global Market Intelligence.

Nokia. The tech company announced it will acquire health tech firm Withings to "accelerate entry" into the digital health space. The deal values Withings at $191 million.

Facebook. The social network will launch a camera app to urge more of its users to stream live video, reports The Wall Street Journal. However, the report notes the app is in its early stages.

Follow Brett Molina on Twitter: @brettmolina23.