Your Galaxy S21 just got a cool new trick normally reserved for the newest phones

Samsung Galaxy S21 FE
(Image credit: Samsung)

Samsung is kicking off the new month by releasing Astrophotography Mode to the Galaxy Z Fold 4 and Galaxy S21 series following a similar update to the Galaxy S22 line several months ago.

Users of those Samsung devices will now have an easier time taking high-quality pictures of the night sky without, for the most part, needing any fancy equipment or extensive experience. Astrophotography Mode comes with a Sky Guide for pointing out the exact location of constellations by “drawing [an outline] on the screen”. You will also be able to choose how long those outlines stay up on screen by dragging an in-app slider from four minutes up to 10, according to SamMobile.

All you need to do is install the latest update for the Expert RAW app from Samsung’s Galaxy Store in order to get the feature on your Z Fold 4. For the S21 phones, you will need to download the April 2023 security patch first before you can try out Astrophotography Mode. Once everything is squared away, a new icon for the mode will appear on the far side of the in-app toolbar.

Be aware the tech isn’t foolproof. You will need to have a clear night sky (although a few passing clouds won’t ruin the effect) plus little to no light pollution which may be difficult to avoid if you live in a city. But if you’re able to make it work, the images you can capture are pretty stunning. We do recommend getting a phone tripod. Taking long exposure shots of the stars requires you to hold the camera steady for several hours so save your arms the trouble. 

Potential expansion

It’s unknown if other Galaxy phones will get Astrophotography Mode. However, it’s worth mentioning a leak back in February by Twitter user GaryeonHan that did correctly predict that the Z Fold 4 and S21 Ultra would get the feature. That same leak also claimed the Galaxy S20 Ultra, N20 Ultra, and Z Fold 2 would see the same update. As it turns out, all three are listed as devices that have recently obtained support for Expert RAW on the app's Galaxy Store listing. So it’s possible this isn’t the last we see of Astrophotography Mode coming to older Galaxy models. We did reach out to Samsung to see if we could get any hints at a future rollout. This story will be updated at a later time. 

In the meantime, be sure to check out TechRadar's roundup of the best Galaxy S21 deals for May 2023 if you’re looking for a deal on this now more feature-rich phone.  

TOPICS
Cesar Cadenas
Contributor

Cesar Cadenas has been writing about the tech industry for several years now specializing in consumer electronics, entertainment devices, Windows, and the gaming industry. But he’s also passionate about smartphones, GPUs, and cybersecurity. 

Read more
Samsung Galaxy S25 Ultra versus iPhone 16 Pro Max night photography
My Samsung Galaxy S25 Ultra vs iPhone 16 Pro Max night photography shootout revealed a big Galaxy issue – but a fix is on the way
A woman standing next to a telescope looking up at the moon
How to step up your stargazing game in 2025 on the cheap, according to space experts
An image of the Samsung Galaxy S25 Ultra from a hands-on event
Will Samsung's new Galaxy AI features come to older devices? Here's what we know
An image of the Samsung Galaxy S25 Ultra from a hands-on event
Samsung Galaxy S26 Ultra could resurrect an intriguing camera feature
The Samsung Galaxy S21 series of phones lying face down.
Samsung announces One UI 7 is coming to older phones after all, but the launch is still a mess
Samsung Galaxy S24 hands on handheld back straight white
The Samsung Galaxy S24 is getting one of the S25’s biggest video upgrades with One UI 7 – here’s why Log Video matters
Latest in Samsung Galaxy Phones
Samsung Galaxy Z Fold 6 in Paris in front of the Louvre pyramid
5 things I want from the Samsung Galaxy Z Fold 7
The Samsung Galaxy S21 series of phones lying face down.
Samsung announces One UI 7 is coming to older phones after all, but the launch is still a mess
The Samsung Galaxy S25 Edge on display the January 22, 2025 Galaxy Unpacked event.
A fresh Samsung Galaxy S25 Edge benchmark leak has eased my worries about its performance
Samsung Galaxy S25 Ultra on blue background with lowest price text overlay
Selling out: Samsung's incredible Galaxy S25 Ultra deal is still up for grabs - get $300 off upfront or a $900 trade rebate
The Samsung Galaxy S25 Edge on display the January 22, 2025 Galaxy Unpacked event.
Leaked Galaxy S25 Edge pricing gives us a clearer idea of how the super-slim phone will fit into Samsung's lineup
Samsung Galaxy Z Flip 6 in blue
The Samsung Galaxy Z Flip SE may launch months after the Galaxy Z Flip 7
Latest in News
Quordle on a smartphone held in a hand
Quordle hints and answers for Sunday, March 23 (game #1154)
NYT Strands homescreen on a mobile phone screen, on a light blue background
NYT Strands hints and answers for Sunday, March 23 (game #385)
NYT Connections homescreen on a phone, on a purple background
NYT Connections hints and answers for Sunday, March 23 (game #651)
Google Pixel 9 Pro Fold main display opened
Apple is rumored to be prioritizing battery life on the foldable iPhone – which could also feature a liquid metal hinge for added durability
Google Pixel 9
The Google Pixel 10 just showed up in Android code – and may come with a useful speed boost
L-mount alliance
Sirui joins L-Mount Alliance to deliver its superb budget lenses for Leica, DJI, Sigma and Panasonic cameras