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!

DUAL AMOLED DISPLAYS - 6.67" immersive main screen plus a handy always-on sub-display for instant info.
BLAZING 5 G CONNECTIVITY - Stay ahead with global dual SIM 5G speeds for seamless work and play.
MASSIVE STORAGE SPEED - 32GB RAM + up to 2TB expansion means zero compromises on apps or files.
RUGGED READY FOR ANYTHING - IP68/IP69K water and dust resistance with military-grade durability to match your hustle.
PRO GRADE TRIPLE CAMERA SETUP - Capture every moment in stunning 64MP clarity and cinematic 8K video.

The Ulefone Armor 28 Ultra 5G is a powerhouse rugged smartphone featuring a 12-core MediaTek Dimensity 9300+ processor, 32GB RAM with up to 2TB expandable storage, and a stunning 6.67" AMOLED dual-screen setup. It boasts a professional-grade 64MP triple camera system capable of 8K video recording, ultra-fast 120W wired and 50W wireless charging, and military-grade IP68/IP69K water and dust resistance. Designed for professionals who demand durability without sacrificing cutting-edge tech, it supports global 5G networks (excluding AT&T/Cricket), runs Android 15, and includes advanced AI features and USB 3.2 Gen 2 for lightning-fast data transfer.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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