Which smartphone was the first to record 4K video?

Which smartphone was the first to record 4K video? The Acer Liquid S2 was the first smartphone credited with this capability.

Acer unveiled the Liquid S2 in September 2013, describing it as the first smartphone capable of recording 4K Ultra HD video. Its camera recorded 3840×2160 footage at 24 frames per second.

The Samsung Galaxy Note 3 followed closely and became one of the first phones to offer 4K recording at 30 frames per second. That distinction explains why the Note 3 is sometimes incorrectly listed as the overall pioneer: it was Samsung’s first 4K-recording phone and offered a higher frame rate.

The Acer Liquid S2 used Qualcomm’s Snapdragon 800 platform and paired its camera with a six-inch 1080p display. Although its 4K feature was technologically notable, the phone’s large size and limited storage made extended recording impractical. The historical “first” refers to recording capability, not necessarily the first widely sold or popular 4K phone.