What is the frequency bands of the Ulefone Armor 28 Ultra?

5G: NR Sub6: N1/2/3/5/7/8/20/25/28/38/40/41/66/71/77/78/79

Which carriers is it compatible with?

Compatible with most carriers such as T-Mobile, Metro PCS, Mint Mobile and others.

What to do if your Armor 28 Ultra can't work with your carrier?

You need to activate the SIM card on a existing phone which supports your carrier. After you receive the initial activation texts or get 4G signal, put the SIM card back into your Armor 28 Ultra.

How to activate the virtual 16GB memory expansion?

The Virtual Memory Expansion can be activated in Settings and adds up to 16GB of RAM. Some software may not be compatible with this feature.

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📱 Rugged power meets sleek innovation — never miss a beat or a shot!

PRO GRADE TRIPLE CAMERA SYSTEM - Capture stunning 8K videos and ultra-clear photos day or night with Sony and Samsung sensors plus advanced AI night vision.
RUGGED ELEGANCE MEETS ENDURANCE - MIL-STD 810G, IP68/IP69K water & dust resistance, Gorilla Glass 5, and a 576-hour standby battery keep you unstoppable.
BLAZING 5 G DUAL SIM CONNECTIVITY - Stay effortlessly connected worldwide with cutting-edge 5G speeds and dual SIM standby—work and play without limits.
MASSIVE STORAGE FUTURE PROOF OS - 32GB RAM plus up to 2TB expandable storage paired with Android 15 ensures you never run out of space or features.
POWERHOUSE PERFORMANCE WITH AI BOOST - Experience lightning-fast 3.4GHz MediaTek Dimensity 9300+ and AI-enhanced graphics for seamless multitasking and immersive gaming.

The Ulefone Armor 28 Ultra 5G is a rugged smartphone engineered for professionals who demand durability and top-tier tech. Featuring a 6.67" AMOLED dual screen, a 12-core MediaTek Dimensity 9300+ processor, and up to 32GB RAM with 2TB expandable storage, it delivers powerhouse performance. Its triple camera system includes a 64MP night vision lens and 8K video capability, perfect for capturing every detail. With IP68/IP69K waterproofing, MIL-STD 810G certification, Gorilla Glass 5 protection, and a massive battery with 120W fast charging, this phone is built to keep up with your dynamic lifestyle.