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The vivo Y21d is a 4G Android smartphone with a 6.68-inch 90 Hz LCD, a T7225 octa-core processor, a 6500 mAh typical battery, 44W charging, and IP68/IP69 water-resistance ratings. Its memory and storage options, supported network bands, box contents and colours depend on the country, so there is no single “global” specification sheet. The table below uses vivo’s official Hong Kong specification page as the reference point and shows where other official markets differ.
vivo Y21d full specifications
The figures below are the ones vivo lists on its official Hong Kong specification page, as checked in 2026. Treat them as the reference configuration for that market, not as a guarantee for every seller or region.
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| Category | Specification (vivo Hong Kong page) |
|---|---|
| Operating system | Android 15 with Funtouch OS 15 |
| Processor | T7225 octa-core, 12 nm process |
| Memory | 6 GB LPDDR4X RAM (listed configuration) |
| Storage | 256 GB eMMC 5.1 (listed configuration); microSD expansion up to 2 TB |
| Display | 6.68-inch LCD, 1608 × 720 resolution, 90 Hz refresh rate, 1000 nits high brightness mode (conditional) |
| Rear camera | 50 MP main camera plus 0.08 MP secondary camera |
| Front camera | 5 MP |
| Battery | 6500 mAh typical Li-ion; vivo states a rated capacity of 6355 mAh |
| Charging | Up to 44W FlashCharge with vivo’s official 11V/4A charger |
| Dimensions | 166.14 × 77.01 × 8.39 mm |
| Weight | 209 g |
| SIM | Dual nano-SIM plus microSD |
| Network | 4G bands listed; no 5G listed |
| Water resistance | IP68 and IP69 (with the limits explained below) |
Memory, storage and regional variants
The nominal RAM and storage figures are not the space you will have to use. The operating system and preinstalled applications occupy part of both, so the usable figures are lower than the numbers on the box or listing. The configuration you get also depends on where you buy the phone, as the table below shows.
| Item | Hong Kong (vivo official page) | Philippines (vivo official page) | Bangladesh (vivo official store) |
|---|---|---|---|
| RAM and storage options | 6 GB + 256 GB | 4 GB + 128 GB and 6 GB + 256 GB | 6 GB + 128 GB and 8 GB + 128 GB |
| Items listed in the box | Not stated | Charger, USB cable, eject tool, phone case, applied protective film, documentation | Phone case and charger |
| Connectivity details listed | Dual nano-SIM, microSD, 4G bands, no 5G listed | Not stated | Wi-Fi 2.4/5 GHz, Bluetooth 5.2, USB-C 2.0, 3.5 mm headphone jack, no NFC |
| Video recording listed | Not stated | Not stated | 1080p |
The same model name therefore does not guarantee the same memory, connectivity or accessories. Match your order to a specific market page, and do not assume a 6 GB variant in one country is the one sold in another. The older vivo Y21 is a separate model and its specifications should not be used for the Y21d.
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Display: what the 1000-nit figure means
The panel is a 6.68-inch LCD at 1608 × 720 pixels, which is HD+ rather than full HD. Dividing the diagonal into the resolution gives a pixel density of roughly 264 ppi, a figure calculated from the listed numbers rather than one vivo publishes. The 90 Hz refresh rate is the main motion-related feature on the spec sheet.
The Hong Kong page lists 1000 nits of high brightness mode (HBM). vivo says this mode depends on ambient light and automatic brightness settings, and it can switch off when the surroundings get darker or when the phone heats up. In practice, 1000 nits is a peak figure available under specific conditions, not the brightness you should expect all the time.
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- Compatible with Vivo Y21d
- Robust, fashion case for pretecting your cell phone against scratches, drops, bumps, shock and scratching.
- Slim, form fitting bumper case design with defined edges and smooth finish. Slides easily in and out of pockets.
- Material: Made of PU leather to offer full protection all around the device.
- All the features, buttons and sensitivity of your smartphone are accessible and easily operated with the case installed.
Cameras
The rear setup pairs a 50 MP main camera with a 0.08 MP secondary camera. That 0.08 MP figure is far lower in resolution than the main sensor, so the 50 MP number describes only the main camera. The front camera is 5 MP. vivo’s Hong Kong page notes that some camera functions are limited to higher-RAM models, so a 4 GB unit may not offer every mode shown on the 6 GB listing.
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Rank #3
- Compatible with Vivo Y21d
- Robust, fashion case for pretecting your cell phone against scratches, drops, bumps, shock and scratching.
- Slim, form fitting bumper case design with defined edges and smooth finish. Slides easily in and out of pockets.
- Material: Made of PU leather to offer full protection all around the device.
- All the features, buttons and sensitivity of your smartphone are accessible and easily operated with the case installed.
Battery and charging
Battery capacity
vivo lists the battery as 6500 mAh typical. The company also gives a rated capacity of 6355 mAh. When comparing phones, use the same basis for each device. A typical figure and a rated figure are not interchangeable, and the difference between them is about 145 mAh.
44W FlashCharge
The Y21d supports up to 44W FlashCharge with vivo’s official 11V/4A charger. That 44W figure is the maximum stated rate, and it applies only when the charger listed by vivo is used. A third-party charger will not necessarily deliver the same output. The Hong Kong product page also advertises charging from 1% to 40% in 30 minutes. This is a manufacturer claim under the test conditions vivo specifies, not a result from an independent test, and actual times will vary with temperature, usage and the charger.
Rank #4
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- 【Fitting】Every pierce and button cover are perfectly match (Earphone, MIC, etc). Tightlyattaching with phone creates original touch feeling.
- 【 Strong heat dissipation 】The product is made of high-quality UV painting+TPU. The phone case is lightweight and has strong heat dissipation.
- 【 Anti drop+dustproof 】The full coverage and TPU softness of the phone case provide excellent protection for the phone, achieving the goal of anti drop and dustproof.
Water resistance and durability
What IP68 covers
The Hong Kong specification page lists IP68 and IP69. vivo’s product overview describes its IP68 testing as static immersion in fresh water up to 1.5 m for up to 30 minutes. That is a laboratory test condition. It does not describe moving water, salt water, soap, chlorinated pools or any real-world drop, so it should not be read as a general seal against water.
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vivo also describes IP69 testing under high-pressure and high-temperature conditions, and gives specific parameters for them on its page. The rating is a laboratory result under those parameters and does not extend the IP68 guidance into everyday use.
Best Value
- 👀 [GREAT VIEWING] BoxWave Holster Compatible With vivo Y21d. New design integrates a SAFE AND SECURE holder with minimal screen coverage. No plastic window cover that obstructs your view or operation of the device. 💬 Includes limited 3rd party tech support for your device (up to 3 inquiries via messaging) - not affiliated with or endorsed by vivo ⭐ *** PLEASE NOTE, Y21D DEVICE NOT INCLUDED ***
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- 📦 [EXTRA STORAGE] Includes key slot for SAFE STORAGE while you are out and about.
- 👕 [BUILT FOR COMFORT] Breathable and stretchable material with cutouts on the armband for added VENTILATION and circulation.
The limits vivo states
vivo states plainly on its overview that water resistance is not permanent. Seals can degrade with wear, and the company says the phone is not a professional waterproof device. Its exact wording is: “This product is not a professional waterproof mobile phone.” vivo also says the Y21d is not suitable for swimming, diving or similar activities, and that liquid damage is not covered by the warranty.
In practice, treat the IP68 and IP69 ratings as protection against accidental splashes and brief, controlled immersion, not as a reason to take the phone into a pool, the sea or a shower with the expectation that it will stay sealed.
The “50-Month Smooth Experience” claim
The product overview uses the phrase “50-Month Smooth Experience.” vivo says this refers to smoothness tests in its own lab, achieved through hardware and software optimisation. The company explicitly says the claim does not mean there is no latency at all, and that performance varies with network conditions, usage habits and other factors. It is a branded manufacturer claim about lab testing, not a guarantee of how the phone will perform after 50 months.
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- Confirm the exact RAM and storage configuration on the official page for the country where you will buy the phone.
- Check that the supported 4G bands match your country and carrier, since the Hong Kong page lists 4G bands but no 5G.
- Check the box contents for that market, especially whether a charger and case are included.
- Compare prices and stock only on the official or authorised retailer page for your market, because listed prices change.
- If you plan to use the phone near water, read vivo’s limits on resistance and warranty coverage before relying on the IP rating.
Where a specification here is marked as coming from one market’s page, verify it for your own market before treating it as the figure for the phone you are buying.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
