MANILA -- Samsung revamped the cameras on the Galaxy S20 series, the 11th iteration of its S line of premium smartphones. It added an "Ultra" model in a direct challenge to chief rival Apple's iPhone 11 Pro Max.

The South Korean electronics giant also unveiled the Galaxy Z Flip, shaped like a makeup compact, it's second attempt at a smartphone with a foldable display.

Here are photos of the two devices, which launched on Tuesday in San Francisco, California (3 a.m. Wednesday in Manila).

• Galaxy S20 Ultra with 100x zoom, Galaxy Z Flip: Samsung unwraps 2020 flagships

The Samsung Galaxy S20, S20+ and S20 Ultra 5G smartphones are seen during Samsung Galaxy Unpacked 2020 in San Francisco, California, US, Feb. 11, 2020. Stephen Lam, Reuters

TM Roh, President and Head of Mobile Communications Business, speaks during the Samsung Galaxy Unpacked 2020 event in San Francisco, California on Feb. 11, 2020. Josh Edelson, AFP

Drew Blackard, head of US mobile product management at Samsung Electronics, speaks on stage during Samsung Galaxy Unpacked 2020 in San Francisco, California, US, Feb. 11, 2020. Stephen Lam, Reuters

Attendees look at a Samsung Galaxy S20 Ultra 5G smartphone during Samsung Galaxy Unpacked 2020 in San Francisco, California, US, Feb. 11, 2020. Stephen Lam, Reuters

Samsung Galaxy Z Flip phones are seen on display during the Samsung Galaxy Unpacked 2020 event in San Francisco, California on Feb. 11, 2020. Samsung unveiled its second folding smartphone, a "Z Flip" handset with a lofty price tag aimed at "trendsetters." The smartphone flips open, like a pocket cosmetics case, opening into a 6.7-inch screen. Josh Edelson, AFP

A Samsung Galaxy Z Flip foldable smartphone is seen during Samsung Galaxy Unpacked 2020 in San Francisco, California, US, Feb. 11, 2020. Stephen Lam, Reuters

A trio of Samsung Galaxy Z Flip foldable smartphones is seen during Samsung Galaxy Unpacked 2020 in San Francisco, California, US, Feb. 11, 2020. Stephen Lam, Reuters

Attendees take photographs of the new Samsung Galaxy Z Flip foldable smartphone during Samsung Galaxy Unpacked 2020 in San Francisco, California, US, Feb. 11, 2020. Stephen Lam, Reuters