I25 Ultra Unlocked Smartphone 12+512GB - Big Battery, Pen Ready

In this review of the I25 Ultra unlocked smartphone the bottom line is clear: this phone is aimed at users who want a very large screen, long battery life and high resolution cameras without being tied to a carrier. The most persuasive reason to buy is its 7000mAh battery paired with a 6.99' HD+ display and generous 12GB+512GB memory, which together make it a practical choice for heavy media use and long days away from a charger. The review covers real-world use, camera basics, performance and who will get the most from this handset.

Key Features

• 6.99' HD+ Display: The large 6.99' 1440 x 3040 screen provides a roomy canvas for video, reading and multitasking without feeling cramped.
• 7000mAh Battery: A very large battery and AI power management extend standby and on-screen time, so the phone easily lasts through long outings.
• High resolution cameras: A 108MP main camera and 68MP front camera capture detailed photos and higher resolution selfies suitable for cropping and sharing.
• Snapdragon 8 Gen3 performance: The 12-core chipset with 12GB RAM handles multiple apps, gaming and media playback smoothly while 512GB gives ample onboard storage.
• Unlocked Dual SIM support: The 2+1 card slot design accepts two 5G SIMs and a microSD, so travelers or those who keep work and personal numbers separate have flexibility.
• Biometric convenience: Face ID and a fingerprint button unlock offer quick, familiar security without extra steps.

Who It's For

The I25 Ultra is for power users who prioritize battery life, a large display and lots of local storage. Photographers who want very high pixel counts for cropping, vloggers who need long recording times, and travelers who benefit from dual SIM and broad band support will appreciate this phone.

People who prefer the lightest, most pocketable handsets or those who want flagship-level camera tuning and brand-backed ecosystem services may want to look elsewhere. Also, buyers who need guaranteed carrier-specific feature support should confirm compatibility before purchase.

Pros & Cons

Pros

• Exceptional battery capacity for extended use and reliable standby.
• Large, sharp 6.99' HD+ screen that enhances media and multitasking.
• High megapixel main and front cameras for detailed photos and selfies.
• Strong performance with Snapdragon 8 Gen3 and lots of RAM and storage.

Cons

• The very large size may be bulky for small pockets and single-handed use.
• No carrier-specific software assurances are stated, so confirm network features if required.

Specifications

Our Verdict

The I25 Ultra is a compelling choice for users who need endurance, a large display and high resolution imaging at a practical price point; its big 7000mAh battery and 12GB+512GB configuration make it especially suited to media-heavy days and travel. It delivers good overall performance and flexible dual SIM support, though its size will not suit everyone.

Frequently Asked Questions

Does this phone support two active SIMs?
Yes, the I25 Ultra uses a 2+1 card slot design that supports two 5G SIM cards and a microSD at the same time.

How long does the battery last in real use?
The 7000mAh cell combined with AI power management provides extended screen and standby time suitable for long days and outdoor use, though exact run time varies with screen brightness and app usage.

Can I unlock the phone with biometrics?
Yes, it supports both facial recognition (Face ID) and a fingerprint button for fast unlocking.