I25 Ultra Unlocked Smartphone 16+512GB - Large Battery, S Pen

In this review of the I25 Ultra Unlocked Smartphone the bottom line is straightforward: this phone is for power users who want a very large screen, massive battery life and an included active pen without the carrier lock-in. The I25 Ultra pairs a 6.99 in HD+ display and a 7000mAh battery with a high-resolution 108MP main camera and Snapdragon 8 Gen3 performance, making it a strong choice for multitasking, long days away from a charger, and sketching or note taking with the included S Pen. It is best suited for someone who values battery life and productivity features over a compact footprint.

Key Features

• 6.99 in HD+ display: A large 1440 x 3040 screen gives more room for reading, watching videos and using the S Pen for detailed input.
• 7000mAh battery: A very large battery provides all-day use and multiple heavy-use sessions without needing a midday recharge.
• Snapdragon 8 Gen3: A 12-core CPU with 16GB memory keeps multiple apps and games responsive while switching between tasks.
• 16GB+512GB storage: Generous built-in storage plus a card slot lets you keep large media libraries and install many apps without running out of space.
• Pro-grade S Pen included: A 4096-pressure pen with magnetic attachment enables handwritten notes, photo editing and drawing without buying an accessory separately.
• Dual SIM and global 5G bands: Two 5G SIM support and a 2+1 card slot design let you use two numbers or add storage while traveling.

Who It's For

The I25 Ultra is aimed at users who want tablet-sized viewing and long endurance: mobile professionals, students who take lots of notes, and content viewers will appreciate the extra screen area and the included S Pen. Photographers on a budget can also benefit from the 108MP main camera and the high-resolution front camera for video calls and selfies.

People who prefer compact phones or need the absolute latest display tech and official brand warranty support from major carrier-tied vendors should look elsewhere. This device is large and optimized for battery life and productivity rather than being pocket-friendly or ultra-lightweight.

Pros & Cons

Pros

• Exceptional battery life from the 7000mAh pack for multi-day or heavy single-day use.
• Powerful Snapdragon 8 Gen3 chipset and 16GB RAM for smooth multitasking and gaming.
• Included 4096-pressure S Pen with magnetic attachment adds real productivity value.
• Large 512GB storage with expandable card slot keeps media on-device.

Cons

• Large 6.99 in size may be unwieldy for one-handed use and pocket carry.
• While the display is high resolution, users seeking the highest-end OLED or refresh rate panels may find it less cutting-edge.

Specifications

Display	6.99 in HD+ 1440 x 3040
Operating System	Android 14.0
Processor	Snapdragon 8 Gen3 12-core
Memory & Storage	16GB RAM, 512GB internal, expandable card slot
Battery	7000mAh
Cameras	108MP main, 68MP front
Connectivity	Dual SIM 5G, GPS, Face ID, fingerprint unlock

Our Verdict

The I25 Ultra is a compelling choice for users who prioritize screen size, battery life and on-device productivity tools like the included S Pen. With a high-capacity battery, strong Snapdragon performance and large internal storage, it delivers good value for multitaskers and creators who want an unlocked phone with robust specs rather than a compact daily driver.

Frequently Asked Questions

Does the phone support two SIM cards?
Yes, the I25 Ultra uses a 2+1 card slot design that supports two 5G SIMs and an additional storage card.

Is the S Pen included and how does it attach?
The phone ships with a 4096-pressure S Pen that attaches magnetically to the phone for storage and quick access.

How long does the battery last in normal use?
Thanks to the 7000mAh battery, most users should get a full day or more of heavy use and multiple days with light to moderate use.