Atom L - Small Rugged Smartphone, IP68 Rating
⚠️ Notice: Due to the legacy Android version and the lack of MediaTek platform development support, this device cannot receive further OS upgrades. Some users have recently reported that Google Pay may not function properly on this device, and this issue is beyond our technical support scope. If Google Pay or NFC payments are essential to you, please consider this limitation carefully before purchasing.
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⚠️ Notice: Due to the legacy Android version and the lack of MediaTek platform development support, this device cannot receive further OS upgrades. Some users have recently reported that Google Pay may not function properly on this device, and this issue is beyond our technical support scope. If Google Pay or NFC payments are essential to you, please consider this limitation carefully before purchasing.
Certified by
⚠️ Notice: Due to the legacy Android version and the lack of MediaTek platform development support, this device cannot receive further OS upgrades. Some users have recently reported that Google Pay may not function properly on this device, and this issue is beyond our technical support scope. If Google Pay or NFC payments are essential to you, please consider this limitation carefully before purchasing.
Certified by
4-Inch Small Android 11 Rugged Smartphone - IP68-Rating
Compact Smartphone with A 4-Inch Display
The 4-inch display of Atom L makes it simple to operate with only one hand. Say goodbye to the hassle of large mobile phones!
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 L 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.
Powerful 4300mAh Fast Charging Battery
With the massive 4300mAh battery of Atom L, 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.
48MP Rear Camera
The 48MP rear camera of Atom L captures more without compromising quality, enabling you to shoot excellent photos with sharpness and vibrant color.
Tailor-Made for Outdoor Enthusiasts
The Atom L'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.
Android 11 OS
Atom L, 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.
Dual SIM Card
The dual-SIM card slot on the Atom L allows you to insert SIM cards from two different carriers and use them both at the same time.
Dimensions
Unihertz Atom L Specifications
Basic Information
Dimensions: 134.5 × 65 × 17.5 mmWeight: 224.5 g (With Battery)
CPU: Helio P60 Octa-Core, 2.0GHz
OS: Android 11
Memory: 6GB + 128GB UFS 2.1
Battery: Non-Removable 4300 mAh
Charge Rate: 18W
SIM Card Type: Dual Nano SIM Card
Micro SD: Yes
Card Slot: SIM 1 + Hybrid (SIM or Micro SD)
Display
Material: LCDDisplay Size: 4.0 inches
Resolution: 1136 × 640 Pixels
Camera
Rear Camera: 48MP AFFront Camera: 8MP FF
Connectivity
Bands: 2G GSM: Bands 2/3/5/8, 3G WCDMA: Bands 1/2/4/5/6/8/19, 3G CDMA2000: Bands BC0/BC1, 4G FDD-LTE: Bands 1/2/3/4/5/6/7/8/12/13/17/18/19/20/25/26/28A/28B/66, 4G TDD-LTE: Bands 34/38/39/40/41Wi-Fi: WLAN 802.11 a/b/g/n/ac 2.4GHz/5GHz, Wi-Fi Direct, Wi-Fi Hotspot
Bluetooth: Bluetooth 5.1
NFC: Yes
Navigation: GPS + GLONASS + BeiDou
Features
Sensors: Fingerprint (Front-Mounted), G-Sensor, Gyroscope, Proximity, Ambient Light Sensor, Compass, BaroceptorFingerprint: Yes
Facial Recognition: Yes
Infrared Port: Yes
USB: USB Type C
USB OTG: Yes
Programmable Key: Yes
Loudspeaker: Yes
3.5mm Headphone Jack: Yes
Wireless Charging: No
FM Radio: Yes
Misc
Color: BlackSplash, Water & Dust Resistant: IP68 Water / Dust Resistant
Shock Resistant: Yes
SAR Value: SAR (EU 10g): Head 0.199 W/kg, Body 0.464 W/kg; SAR (US 1g): Head 0.322 W/kg, Body 0.886 W/kg
Certifications
In the Box
GENERAL QUESTIONS
1. Go to Settings ->System ->About Phone ->IMEI number 1 and 2.
2. Look for the IMEIs on the box of the phone (if you still have it).
Settings ->System ->About phone ->Wireless update
Please follow these steps to clear cache before searching for the update again:
Settings -> App Notifications ->See all apps ->Show System (top right corner with 3 dots) ->Wireless update-> Clear Data and Cache
Reset to Factory Settings (When your phone can be turned on)
Settings ->System ->Reset Options ->Erase all data (factory reset)
Reset to Factory Settings (When your phone cannot be turned on)
Power off your phone -> Press and hold the Power and Volume up buttons -> After your phone vibrates, keep holding the buttons for 5 seconds to enter Recovery mode -> Press the Volume up and down buttons to select the option to clear data or restore your device to its factory settings -> then press the Power button to confirm -> Reboot your phone.
If you have forgotten your phone password and want to unlock it, you will have to restore your device to its factory settings. Then you can set it up again and set a new screen lock.
However, all data on your phone will be erased and cannot be restored. It is recommended that you confirm whether you have backed up your phone data on the cloud or by other means. It is also recommended that you confirm whether you or someone else has changed the PIN/password. If you still cannot recall the password, refer to last Question to restore your device.
English, English(UK), German, French, Italian, Portuguese, Spanish, Russian, Dutch, Japanese, Simplified Chinese, Traditional Chinese(Zhuyin, Cangjie, Quick input).
For the keyboard input of other languages, we may consider adding them in the future if we receive enough demands.
On the other hand, Android system supports a wide range of languages, with which you will be able to turn on touch screen input as a supplement.
TELECOM COMPATIBILITY
1. Check the feedback from other users here.
2. Please find the the phone's supported bands in product specs and check if those meet your sim-card carrier's needs or contact your carrier.
* Due to different carrier's policy regarding to unlocked phones, LTE wireless service may not be available even if listed bands are supported by your carrier. When this happens, please contact your carrier for more details.
Our phone can work fine in Verizon network. However, as it is not certified by Verizon, you cannot activate your new SIM card with it. Please activate the new SIM card with another Verizon certified device and then use it in your Unihertz phone.
TECHNICAL ISSUES (PROBLEM SHOOTING)
Please follow the guide to do a micro-calibration for your phone (you can also contact us for a video guide):
1. Please clear the dust in your proximity censor hole on top of your phone.
2. Input *#3377# in the Dial-up interface.
3. Click Distance calibration.
4. Follow the guide to finish the process.
Please permit the apps to run in the background by activating them in the following three settings:
1. Settings ->DuraSpeed
2. Settings ->Intelligent assitance ->App blocker
3. Settings ->App¬ification ->See all apps ->this app ->Battery ->Battery optimization and Background restriction->Don't optimize
You can also watch a video guide here.
It is not advised to downgrade your smartphone since there might be compatibility issues.
Please contact your operator and check the APN parameters.
1. Go to Sound Recorder app and run a recording test.
2. Check whether your SIM card works well on the other phone.
1. Please check if this only happened to some or all of friends you called.
2. Stay in the same location and insert your SIM card into another Android phone and the same issue arises.
3. Turn on call record in the call interface to record a call, then check whether the sound recorded is normal.
1. Please send us a full screenshot of your battery usage in Settings ->battery ->battery usage.
2. Follow these steps to capture the battery log and send it to service@unihertz.com for further analysis.
REPAIR AND WARRANTY
For repair, please send without the accessories.
For replacement or refund, please send with accessories in one package.
The broken glass is not covered by warranty.
Please send the smartphone back to us after negotiating with service@unihertz.com as we do not provide phone screen separately. Repair or replacement fee may apply.
The repaired/ replaced device will get extra 90 days warranty or the remaining original warranty period, whichever is longer.
Customer Reviews
I own two Atom L phones, they worked great for about a year then swelled up and stopped charging.
If I could replace the battery I would.
Atom-L was the perfect phone! Perfect size to go in my pocket, rugged enough to go anywhere, perfect balance between battery life and weight, and had all the features anyone could ever want. At least it did until 1st July 2026, when Google blocked it from making contactless payments. Disaster! What do I do now? Tank Mini is too fat and heavy, and Jelly Max isn't rugged. Hopefully Unihertz will prioritize an update - Atom-L2 maybe? - let's say Jelly Max hardware in the Atom-L case? I'll be the first backer of that Kickstarter campaign!
I have this phone since almost an year. The reason for minimalistic but fully functional android phone is to reduce the phone time and increase the time for me and my family. I must say my phone time has gone down atleast 50% thanks to this hack. Everything works just like large screen smartphones.. you can capture decent photos and videos. Easy to type and read messages as well.
The only issue i had was, in the beginning the camera kept crashing, after about 2 months, it never happened again. Pretty happy with the choice. More time for me..yeah!
Purchased my Atom L phone, back on it's inception on Kickstarter. And a few more since then. A truly amazing phone. Love the durability, size, quality and workmanship. And also to mention the notification light, that now in this age, is lost. Battery is outstanding. Great sound quality as well. My too phone. And I've had many in the last 25 years
Le smartphone a une excellente autonomie et résiste incroyablement bien au chute et a l'eau