For UK users, please buy Atom XL on Unihertz's official Amazon store here: Unihertz Store

Is this smartphone compatible with major US carriers?

Rugged Compact Smartphone with a DMR Walkie-Talkie

Atom XL is a small compact smartphone with a DMR walkie-talkie. The 4-inch display of Atom XL makes it simple to operate with only one hand. Say goodbye to the hassle of large mobile phones!

Atom XL- rugged outdoor compact smartphone with a walkie-talkie

Use the Walkie-Talkie Features!

You can use Atom XL for up to 8KM of walkie-talkie connection without relying on the Internet connection! Connect freely with your friends who use another Atom XL or a walkie-talkie in a variety of circumstances such as terrain, topography, jungle, desert, rainforest, sea, or mountains.

Atom XL walkie-talkie small phone

The Walkie-Talkie Feature

  • Up to 8KM connection, under diverse circumstances.
  • DMR UHF band (400-480MHz)  DMR and Analog compatible radio.
  • DMR Tier 1 & 2 compatible.
  • Dual slot DMR radio.
  • Programmable preset channel group.
  • High/low power settings (2W, 0.5W).
  • Dedicated PTT key.
  • Voice record and replay function.
  • Firmware is updatable on the air.
  • Support talk with a Bluetooth headset or wired headset.
  • Text messages Tx/Rx.

Atom XL - walkie-talkie operation range-1Atom XL - walkie-talkie operation range-2

Durable & Tough in Extreme Conditions: IP68 Rating

Thanks to an enhanced IP68 rating that is water-, dust-, and shock-resistant, as well as meeting US Military Standard MIL-STD-810G certification, the Atom XL is at ease in a variety of extreme environments and prepared for any situation. Its shell is designed to protect the phone from all sides.

Atom XL - rugged, durable, tough in extreme conditions

Powerful 4300mAh Fast Charging Battery

With the massive 4300mAh battery of Atom XL, you can use it continuously for more than 24 hours. It can charge two times more quickly than typical phones thanks to its fast-charging features.

Unihertz AtomXL battery is 4300mAh

48MP Rear Camera

The 48MP rear camera of Atom XL captures more without compromising quality, enabling you to shoot excellent photos with sharpness and vibrant color.

Atom XL-48MP rear camera-1Atom XL-48MP rear camera

Tailor-Made for Outdoor Enthusiasts

The Atom XL's support for 3 navigational satellites (GPS, BeiDou, and GLONASS) in addition to its large battery and IP68 certification, guarantees faster and more reliable positioning. It is made for people with an adventurous spirit who need more reliable devices for off-road and trekking experiences.

Atom XL is a rugged smartphone

Android 11 OS

Atom XL, which runs Android 11 OS, is compatible with the vast majority of apps available in the Google Play Store. You can also copy apps and data from your old device without any barriers.

Atom XL - 4-Inch Walkie-Talkie Smartphone - Android 11 OS

Dual SIM Card

Atom XL comes with a dual SIM card slot, with which you are free to insert two SIM cards and use them simultaneously.

Atom XL- dual sim card slots


Atom XL - 4-Inch Walkie-Talkie Smartphone - Specifications

Dimensions: 134.5*65*17.5 mm

Weight: 243.5g (with battery)

Color: Black

SIM: Dual Nano-SIM Dual standby

Screen Size: 4.0 inch

Resolution: 1136*640 pixels

Protection: Corning Gorilla Glass


GSM: Band 2/3/5/8
WCDMA: 1,2,4,5,8,19 TD-SCDMA: Band 34/39
FDD/TDD LTE: B1/2/3/4/5/6/7/8/12/13/ 17/18/19/20/25/26/28A/ B28B/34/38/39/40/41/66
C2K: BC0/BC1

OS: Android 11

CPU: Helio P60 Octa-Core, 2.0GHz

Memory: 6 GB+128 GB

Card Slot: Micro SD

Rear Camera: 48MP

Front Camera: 8MP

Loudspeaker: YES

Headphone Jack: 3.5 mm

WLAN: WLAN 802.11 a/b/g/n/ac, 2.4GHz/5GHz, Wi-Fi Direct, Wi-Fi Hotspot

Bluetooth: Bluetooth 4.2



Infrared Port: YES

Radio: FM Radio


Sensors: Fingerprint (front-mounted), G-sensor, Gyroscope, Proximity, Ambient Light sensor, Compass, Baroceptor

Battery: 4300mAh Non-Removable

MISC: Shockproof, IP68 Water/Dust-Resistant, MIL-STD-810G, DMR Walkie-talkie

In the Box

Atom XL - 4-Inch Walkie-Talkie Smartphone - in the box

Atom XL - 4-Inch Walkie-Talkie Smartphone

Customer Reviews

Based on 10 reviews
Brendan Finney
Updated Review based on unit replaced by Unihertz themselves.

This phone is amazing. In all reality, the only con is the screen brightness in the sun, but I can deal. I've been using it for a month or so now alongside Tasker and Lightning Launcher Extreme and couldn't be happier.

-This phone is possibly the best phone I've ever had. The fact that it's unlocked gives it much more prestige.
-It is an incredibly snappy phone.
-It fits in my pocket and I can use it comfortably with one hand!
-The android update (Android 10) gives it great support with apps.
-Using it with the AT&T Bring Your Own Phone sim kit with Straight Talk and the service is awesome.
-The smaller screen may seem like a bad thing but you can binge Twitch, YouTube, playing games...anything for hours because the phone has less pixels to push AND it has a decent size battery (4300mAh).
-Speaker is nice and loud if you need it to be (usually I don't and have it at 50-75% even for alarms and such).
-The stock alarms are a great collection of birds chirping, water sounds and noticeable chimes.
-The device handles heat very well. Spent 3 hours driving with it mounted to the windshield while it was hot out and had no AC and the device didn't even slow down or drain extra battery while using the GPS.
-I've dropped the phone by accident a few times now and the phone hasn't seemed to be affected by it.
-The quick charge is another awesome thing with this phone AND it uses USB 3(I know a lot of phones have this, but still a great plus).
-I've already gotten used to the red "intelligent button" on the side and have switched around the actions a little to make using it easier for myself.
-The NFC chip is very quick as well.
-The Intelligent Assistant has a bunch of great things that give the phone greater quality of life changes such as the app blocker, which has 4 options for EVERY app (Boot Locker, Start Blocker, Background Blocker, and Background Cleanup). Definitely look into this part of the assistant if you want to maximize your battery life. (I can use my phone regularly for 3 days without having to charge.)
-I don't have any bluetooth or wifi issues.
-I haven't used the headphone jack or radio yet.

I really can't think of any notable cons. I absolutely love this phone. If this changes in the future, be sure I'll update my review once again.


perfect size fits pocket -Had no problems everyday use

Richard M
Very good!

Really impressed with the device overall, the "on board" UHF analogue and DMR radio works really well - particularly for amateur radio and PMR. Only disappointment is the camera, which despite a phenomenal 48mp sensor is let down by poor software.


The ATOM XL I find that it is everything I like about it , not to big its rugged, to me its the perfect phone and does what I need and more.

Small, robust and good battery life....a great phone.

I wanted a smaller, robust phone and this ticks all the boxes. Mainstream phones have all increased significantly in size as people use them as a one stop media device. I needed to get away from the bulk of current phone offerings but still retain smartphone functionality. This coupled with a high quality, solid build and excellent battery life makes for a perfect day to day phone.

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