Samsung Galaxy M51
How long will it last?
Our estimateSupported until August 2024 · Buy-by August 2022
Apple doesn't publish an end date, but iPhones have a consistent ~4-year update track record — on that basis the Galaxy M51 should be supported until around August 2024. Buying it today still gets you about -1.8 years of safe use (Apple's written legal minimum is 5 years).
Source: Samsung's official policy · last verified 2026-06-12 · how we compute this
Our verdict
The 7000mAh battery monster that still outlasts almost everything — but its software days are over.
Pros
- Massive 7000mAh battery delivers multi-day endurance that rivals nothing in its class
- Sharp 6.7-inch AMOLED and a 64MP quad camera
- Real 12MP ultra-wide rather than a token lens
Cons
- Software support ended around 2024 after two OS upgrades (to Android 12)
- Heavy at 213g and only a 60Hz screen with 25W charging
Full specifications
Display
💡 Bigger numbers = smoother scrolling (Hz) and easier outdoor reading (nits).
| Screen | 6.7-inch Super AMOLED Plus, 1080x2400 (FHD+), 60Hz |
Performance
💡 The phone's brain — it decides speed today and how well it ages.
| Chipset | Qualcomm Snapdragon 730G |
| RAM | 6GB / 8GB |
| Storage | 128GB |
Cameras
💡 Megapixels aren't everything — lens variety matters more day-to-day.
| main | 64MP |
| ultra-wide | 12MP |
| macro | 5MP |
| front | 32MP |
Battery & charging
💡 Capacity in mAh — bigger usually means longer between charges.
| Battery | 7,000 mAh |
| Charging | 25W wired |
Build
💡 Size, weight, and the materials between your phone and the floor.
| Dimensions | 163.9 × 76.3 × 9.5 mm |
| Weight | 213 g |
| Materials | Glass front (Gorilla Glass 3+), plastic frame, plastic back |
| Water resistance | None |
Software & connectivity
💡 The software it ships with, and how far it can upgrade.
| Software | Android 10 with One UI 2.1 at launch |
| Connectivity | 4G LTE, Wi-Fi 5, Bluetooth 5.0, NFC, USB-C, GPS |
| Update policy | ~2 years of updates (our estimate from Samsung's track record — written minimum is 5 years) |
Better-value alternatives
Similar price, lower cost per month of safe ownership.
Frequently asked questions
How long will the Galaxy M51 get updates?
It received two OS upgrades (Android 11 and Android 12) and roughly four years of security support from its 2020 launch, so official updates have ended.
How big is the Galaxy M51 battery?
It has a huge 7000mAh battery, the largest Samsung had shipped at the time, giving genuine two-to-three-day endurance for many users.
Does the Galaxy M51 still get security patches?
No. Its support window closed around 2024, so it no longer receives Android or security updates and is best used as a battery-focused backup device.
Compare it
Specs are collected from manufacturer documentation; prices reflect major US retailers and change often. Support end dates follow each brand's official policy (or, for Apple, its documented historical pattern). Last verified 2026-06-12.