vivo Y31d 4G 4GB RAM 128GB Storage

vivo Y31d Bangladesh model overview

The vivo Y31d Bangladesh edition is a 4G smartphone built around Qualcomm Snapdragon 6s Gen 2, OriginOS 6 with Android 16, and a 7200mAh typical-capacity battery. It has a large 6.75-inch HD+ LCD with refresh rate up to 120Hz and a 50MP plus 2MP rear-camera setup. vivo Bangladesh lists a 4GB+128GB tier at BDT 27,499 plus VAT; the official e-store and Star Tech selector also show that configuration.

The catalog’s BDT 27,499 MSRP matches that local 4GB/128GB tier, so this single variant is now mapped to 4GB LPDDR4X RAM and 128GB UFS 2.2 storage. This does not prove the exact sealed unit in BiponiBD stock. Check the order confirmation and packaging before dispatch. The Y31d is a 4G model; it should not be confused with newer 5G models or other Y-series devices.

6.75-inch HD+ display and 120Hz refresh

vivo lists a 6.75-inch LCD with 1570 × 720 resolution, 256 pixels per inch, up to 120Hz refresh and 1250-nit high-brightness mode. The large diagonal gives space for reading, maps, messages and video, while HD+ resolution is less detailed than Full HD. The manufacturer also lists 83% NTSC color gamut. HBM brightness is a mode value and is not a promise of continuous maximum brightness in every environment.

A 120Hz refresh setting can make supported scrolling and interface transitions appear smoother, but it does not mean every app or video runs at 120 frames per second. Refresh behavior depends on the app, content and device settings. vivo says the highest refresh rate does not apply to all scenarios. No independent display measurement was performed on this BiponiBD unit. Compare text sharpness and sunlight visibility directly if those are important to you.

Snapdragon 6s Gen 2 4G platform

The official Bangladesh specification identifies a Snapdragon 6s Gen 2 4G mobile platform on a 6nm process. vivo lists eight CPU cores with four clocked up to 2.9GHz and four up to 1.9GHz. These details establish the correct processor family for this Y31d. They correct the old catalog’s vague CPU description and provide a sound point of comparison with other local 4G phones.

Processor identity and clock speed do not prove an independent benchmark score or a specific game frame rate. Everyday performance depends on physical RAM, storage, operating software, heat, network and workload. The official Bangladesh spec does not name a GPU model in the visible table, so this description does not guess one from unrelated or overseas listings. Buyers with demanding gaming needs should seek tests of the exact Bangladesh configuration.

4GB RAM and 128GB storage mapping

This catalog product is mapped to 4GB LPDDR4X physical RAM and 128GB UFS 2.2 storage. vivo Bangladesh publishes the 4GB+128GB tier at BDT 27,499 plus VAT, and the e-store selector marks it as a 4G configuration. Star Tech’s selector includes 4GB/128GB and its listing price matches the catalog MSRP. The evidence supports this mapping over the catalog’s earlier generic 6GB/8GB and 128GB/256GB text.

vivo also publishes higher memory tiers at separate prices; those are not additional BiponiBD variants on this product record. The operating system and preinstalled apps use part of the advertised storage. Extended RAM is software-based and uses storage; it is not additional physical RAM. Confirm 4GB+128GB on the order and box label before opening or setting up the device.

Storage expansion and two-SIM tray

The official Y31d Bangladesh specification lists 128GB or 256GB internal storage options and says expandable ROM is not supported. The card slot is listed for two nano-SIM cards, without a microSD position. This corrects the previous catalog claim that the device accepted microSDXC up to 2TB. Buyers who need removable memory should treat the official local specification as controlling and not rely on the old catalog field.

If you need extra space, choose the correct internal-storage tier before purchase and use a separate backup method for important photos and files. The 4GB/128GB mapping is the one supported by this catalog’s MSRP and local seller selector. Do not assume a microSD card can be inserted or that a 256GB tier is available through this single BiponiBD variant.

50MP main and 2MP depth cameras

vivo lists a 50MP f/2.0 main rear camera plus a 2MP f/2.4 secondary camera and rear flash. Available modes include photo, night, portrait, video, live photo, slow motion, time-lapse, pro, panorama, documents, 50MP, dual view and underwater photography. Megapixel counts describe image output specifications, not guaranteed detail, dynamic range or low-light quality. Scene lighting, movement and image processing all affect results.

Underwater photography is a camera mode, not permission to submerge the phone during everyday use. vivo’s separate durability note warns against daily immersion and states that liquid-ingress damage is not covered by warranty. There is no independent camera test for the BiponiBD unit. Compare photographs from the same regional model if low-light, movement or document detail is a priority.

8MP front camera and video

The Bangladesh specification lists an 8MP f/2.05 front camera. vivo includes front-camera photo, night, portrait, video, live-photo and dual-view modes. The current manufacturer table identifies MP4 recording format but does not give a precise recording resolution or frame-rate line, so this listing avoids importing a resolution claim solely from another seller.

Selfie quality and video-call clarity depend on lighting, movement, camera app, compression and microphone conditions as well as the sensor. Third-party apps may expose different modes than the default camera. If you need a specific resolution, stabilization behavior or video-call feature for work, check the camera menu on the exact device during any permitted inspection period.

7200mAh typical battery and 44W charging

vivo lists a 7200mAh typical battery and a 7060mAh rated capacity, with charging support up to 44W. The manufacturer identifies a vivo standard charger and says actual charging power is adjusted dynamically. Real battery runtime depends on brightness, refresh rate, signal, navigation, video, games, background applications and battery age. Capacity is a manufacturer measurement, not a guarantee of a fixed number of hours.

The official Bangladesh package list includes a charger and USB cable. Confirm that the exact BiponiBD order includes those accessories. Charging speed depends on the compatible adapter, cable, battery level, temperature and device behavior. Do not charge the handset while wet. If it is exposed to liquid, follow vivo’s care guidance and allow the USB port to dry before connecting power.

IP68/IP69 protection and practical limits

vivo says the Y31d was tested under controlled laboratory conditions and is rated IP68 and IP69 under IEC 60529-2013. The official note defines specific fresh-water depth/time and high-pressure hot-water test conditions. It also says this is not a professional waterproof phone and the protection is not permanent. These ratings describe tested resistance, not safe routine underwater use.

vivo warns against daily immersion, seawater, beverages and other liquids. Protection may decline through normal use, and damage caused by liquid ingress is excluded from warranty. Dry the device and port immediately after exposure and do not charge it while wet. Avoid describing the phone simply as “waterproof” or promising that it will survive spills, drops, high-pressure cleaning or submersion.

4G bands, SIM and connectivity

vivo Bangladesh lists GSM 850/900/1800MHz, WCDMA B1/B5/B8, LTE FDD B1/B3/B5/B7/B8/B20/B28 and LTE TDD B38/B40/B41. The phone supports two nano-SIM cards with dual-SIM dual-standby. This is a 4G model, and the official page shows no 5G support. Network functionality depends on carrier coverage, local infrastructure, subscription and software version.

Other local connectivity specifications include dual-band Wi-Fi, Bluetooth 5.1, USB Type-C 2.0, OTG, GPS, BeiDou, GLONASS, Galileo and QZSS. The official Bangladesh page says NFC and FM radio are not supported. The model has an infrared blaster according to vivo. Check mobile-network coverage and any accessory requirements before ordering, especially if NFC or FM radio matters to your use.

OriginOS 6 and Android 16

vivo Bangladesh lists Android 16 with OriginOS 6. The installed software build and security-update date of this BiponiBD unit have not been checked directly. The manufacturer lists a side-mounted capacitive fingerprint sensor, accelerometer, ambient-light sensor, e-compass, proximity sensor, gyroscope and infrared blaster. These are model-level specification facts, not a promise about future update duration.

After delivery, confirm the installed Android and OriginOS versions, language, system updates and app availability. Features can change through regional software versions and updates. No specific number of future major upgrades is claimed because the exact local support schedule was not established. Buyers who need an enterprise app, finance application or accessibility feature should verify compatibility on the actual unit before relying on it.

Dimensions, weight and available colors

The manufacturer lists dimensions of 166.64 × 78.43 × 8.39mm for grey and red variants and a slightly thicker 8.49mm for white. Listed weight is 219g; actual measurements may vary with material batches and method. vivo Bangladesh names Festive Red, Starlight Grey and GlowWhite. This is a large device by compact-phone standards, and the selected color in BiponiBD inventory has not been independently verified.

The composite plastic sheet back and 219g weight are useful fit and handling details. Compare the dimensions with a phone you already carry if one-handed use or pocket size matters. Retailer color options can change with stock; confirm the selected finish in the order confirmation and on the sealed box before opening when color is important to you.

Package contents and included accessories

vivo Bangladesh lists the Y31d phone, quick-start guide, USB cable, charger, eject tool, phone case, applied protective film and warranty card in the box. The official e-store package list supports these model-level contents. That does not establish the physical contents of a particular BiponiBD shipment or any retailer-specific promotional bundle.

Confirm the seller’s written order details and check the delivered package against the box list. Retain the invoice and packaging until the phone and accessories have been checked. If the package differs, raise it promptly under the seller’s return policy. The earlier generic authenticity and warranty language was not unit-level proof and has been removed from the BiponiBD page.

Bangladesh price, VAT and seller terms

vivo Bangladesh lists BDT 27,499 plus VAT for 4GB+128GB. The vivo e-store shows the same configuration at BDT 27,499 with VAT applicable, and Star Tech currently lists the Y31d at BDT 27,499 with its selector including 4GB/128GB. This is the evidence basis for the mapped catalog option and preserved MSRP. Prices and seller inventory can change.

The catalog MSRP is a reference field; it does not confirm BiponiBD’s live offer, VAT treatment, delivery charge, stock or final amount due. The former one-year official warranty claim came from retailer copy and has been cleared because it did not establish this merchant’s order terms. Confirm written warranty duration, service route, return policy and exact payable total at checkout.

Advantages and trade-offs

Specification-based advantages include the Snapdragon 6s Gen 2 4G platform, large 120Hz display, 7200mAh typical battery, 44W charging, dual-SIM support and UFS 2.2 storage. The 4GB/128GB local option has a clear Bangladesh price and is the configuration mapped here. These facts support comparison but do not prove benchmark performance, battery runtime or seller fulfillment.

Trade-offs include HD+ rather than Full HD resolution, a sizeable 219g body, 4G rather than 5G, no NFC, no FM and no microSD expansion according to the official local spec. IP68/IP69 ratings have strict test limitations and do not make daily immersion safe. Make sure those limits fit your needs before purchasing.

Who may want this Y31d option

The 4GB/128GB Y31d may fit buyers who want a large high-refresh display, substantial nominal battery capacity, two SIM cards, modern OriginOS software and a local 4G configuration. Compare physical RAM and UFS 2.2 storage with other phones rather than treating software-extended RAM as extra physical memory. The official listing and matching seller selector make the catalog mapping specific.

If you need NFC, 5G, FM radio, microSD, Full HD resolution or a lighter body, verify those requirements first. Underwater photography modes do not mean the phone should be submerged in daily use. The product record maps to 4GB+128GB; higher memory configurations exist at different official price points but are not this single variant.

Before ordering and after delivery

Before ordering, verify 4GB RAM, 128GB storage, selected color, VAT-inclusive total, delivery, current stock, package accessories, return conditions and written BiponiBD warranty. The model is 4G and does not list NFC, FM or microSD. Check the exact option on the order confirmation. The product page describes the local model but cannot inspect an individual sealed phone.

At delivery, compare the box and invoice, check the device settings and accessories, and retain packaging until inspection is complete. Report any configuration mismatch under the seller’s stated policy. This guide does not certify the unit IMEI, authenticity, condition, production batch, charger output or warranty entitlement. Manufacturer ratings and official specifications apply to model testing and may not describe damage or wear on a particular device.

Detailed specifications

Brand: vivo · Model: Y31d Bangladesh 4G · ModelCode: Exact physical-unit code/GTIN not exposed in catalog · MPN: Unknown; former 48298 was Star Tech Product Code · GTIN: Unknown · Configuration: 4GB RAM / 128GB storage mapped from vivo Bangladesh price/configuration and Star Tech selector; confirm exact shipped unit · Display: 6.75-inch LCD, 1570×720 HD+, 256PPI, up to 120Hz · Brightness: 1250 nits HBM per vivo Bangladesh · Chipset: Qualcomm Snapdragon 6s Gen 2 4G Mobile Platform, 6nm · CPU: 8-core; 4×2.9GHz + 4×1.9GHz · GPU: Adreno family per Star Tech; official vivo Bangladesh table does not specify GPU model · RAM: 4GB LPDDR4X physical RAM mapped option; extended RAM is software-based · Storage: 128GB UFS 2.2 mapped option · CardSlot: Two nano-SIMs only; expandable ROM not supported · RearCamera: 50MP f/2.0 + 2MP f/2.4 depth camera; rear flash · FrontCamera: 8MP f/2.05 · Video: MP4 recording format per official vivo table; Star Tech reports 1080p@30fps · Battery: 7200mAh typical; 7060mAh rated · Charging: 44W maximum supported by vivo standard charger; charging power dynamically adjusts · Network: 2G GSM 850/900/1800; WCDMA B1/B5/B8; LTE FDD B1/B3/B5/B7/B8/B20/B28; TDD B38/B40/B41; 5G not supported · SIM: Two nano-SIMs, Dual SIM Dual Standby · NFC: Not supported per vivo Bangladesh · FM: Not supported per vivo Bangladesh · WiFi: 2.4GHz and 5GHz · Bluetooth: Bluetooth 5.1 · USB: Type-C USB 2.0; OTG supported · Audio: No FM per vivo Bangladesh; Star Tech lists 3.5mm audio jack · OS: Android 16 with OriginOS 6 · Security: Side-mounted capacitive fingerprint sensor · Sensors: Accelerometer, ambient-light, e-compass, proximity, gyroscope; infrared blaster · Durability: IP68/IP69 under controlled IEC 60529-2013 tests; resistance not permanent; not professional waterproof; liquid-ingress damage not covered · Dimensions: 166.64 × 78.43 × 8.39mm (Grey/Red); 8.49mm (White) · Weight: 219g; may vary by batch and measurement · Colors: Festive Red, Starlight Grey, GlowWhite per vivo Bangladesh; confirm BiponiBD stock color · InTheBox: Quick-start guide, USB cable, charger, eject tool, phone case, applied protective film and warranty card per vivo Bangladesh; confirm seller shipment · Warranty: BiponiBD written order-specific warranty unverified

Which vivo Y31d configuration is listed here?

This catalog option is mapped to 4GB LPDDR4X RAM and 128GB UFS 2.2 storage, supported by vivo Bangladesh’s price list and the Star Tech selector. Confirm the sealed unit before dispatch.

Does the Y31d support 5G?

No. The Bangladesh Y31d specification lists 4G and shows no 5G support.

What processor does it use?

The official Bangladesh specification lists Qualcomm Snapdragon 6s Gen 2 4G on a 6nm process.

How large is the display?

A 6.75-inch LCD with 1570×720 resolution and refresh rate up to 120Hz, according to vivo Bangladesh.

What battery and charging are listed?

7200mAh typical, 7060mAh rated and up to 44W charging. Actual battery life and charging power vary.

Is vivo Y31d waterproof?

No waterproof guarantee is made. vivo lists controlled-test IP68/IP69 ratings, warns resistance is not permanent and says liquid-ingress damage is not covered.

Does it support NFC, FM or microSD?

vivo Bangladesh lists NFC and FM as not supported and says expandable ROM is not supported; the card slot is for two nano-SIMs.

What is in the box?

vivo lists a charger, USB cable, eject tool, phone case, applied protective film, quick-start guide and warranty card; confirm BiponiBD shipment contents.

Is BDT 27,499 the final BiponiBD price including VAT?

Not confirmed. vivo lists BDT 27,499 plus VAT for 4GB/128GB. Check the BiponiBD checkout total and written warranty before purchase.