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The Xiaomi Redmi 15 and vivo X300 FE suit different priorities: the Redmi 15 has a much larger 6.9-inch display and a higher stated battery capacity, while the X300 FE is smaller and lists a Snapdragon 8 Gen 5 platform, an AMOLED screen, and a dedicated telephoto camera. Those are manufacturer-published specifications, not results from independent side-by-side testing. There is no reliable universal price difference: the available listings are from different markets and do not establish comparable prices.
Redmi 15 vs vivo X300 FE: key specifications
| Specification | Xiaomi Redmi 15 | vivo X300 FE |
|---|---|---|
| Display | 6.9-inch FHD+ (2340 × 1080), up to 144 Hz in Xiaomi’s global and Mexico material | 6.31-inch AMOLED (2640 × 1216) |
| Processor platform | Snapdragon 685 | Snapdragon 8 Gen 5 |
| Battery | 7000 mAh typical | 6500 mAh typical; 6350 mAh rated |
| Charging | 33 W; Xiaomi’s Mexico listing says a 33 W charger is included | 90 W FlashCharge with the original charger and cable |
| Rear cameras | 50 MP AI dual-camera system | 50 MP main with OIS, 50 MP telephoto with OIS, and 8 MP wide-angle |
| Front camera | 8 MP in Xiaomi’s Mexico listing | 50 MP autofocus |
| Water and dust rating | IP64 in Xiaomi’s Mexico listing | IP68 and IP69 in vivo India specifications |
| Listed memory and storage | Mexico page lists 8 GB + 256 GB; microSD expansion up to 2 TB | India store lists 8 GB or 12 GB RAM and 256 GB or 512 GB storage |
These specifications are market- and configuration-dependent. Xiaomi cautions that configurations and connectivity vary by region; verify the exact model, network version, and local bands before buying. [Xiaomi global Redmi 15 specifications] [Xiaomi Mexico Redmi 15 specifications] [vivo India X300 FE store listing]
Which phone has the bigger display?
The Redmi 15’s 6.9-inch display is substantially larger than the X300 FE’s 6.31-inch screen. That can make the Xiaomi a better fit if a larger viewing area matters for reading or watching video. The vivo is the more compact choice between these two if you prefer a smaller screen. The listed specifications do not establish which display looks better in person: size, resolution, panel type, and refresh rate do not replace a direct quality comparison.
Which has the better battery and charging?
On stated capacity, the Redmi 15 leads with a 7000 mAh typical battery, compared with the X300 FE’s 6500 mAh typical and 6350 mAh rated figures. Capacity alone does not establish which phone lasts longer in everyday use; no independent side-by-side endurance test is established here. Xiaomi’s battery-life statements are manufacturer claims, not measured comparative results.
#1 Best Overall
- USA MARKET ONLY WORK ON TMOBILE MINT TELLO OR ANY UNDER TMOBILE NETWORK PHONE NEEDS A SIM CARD ALREADY ACTIVATED ,OUTSIDE USA WORKS ANY GSM CARRIER SIM GSM FCC ID: 2AFZZRA8E
- Dual SIM (nano SIM + nano SIM or nano SIM + eSIM) (NoT MICRO SD SLOT) 5G: n1/2/3/5/7/8/20/28/38/40/41/48/66/77/78 / 4G: LTE FDD:1/2/3/4/5/7/8/12/13/17/18/19/20/26/28/32/66 -- 4G: LTE TDD:38/40/41/42/48 -- 3G: 1/2/4/5/6/8/19 -- 2G Quad Band - Bluetooth 5.4Wi-Fi: Wi-Fi 6/6E/Wi-Fi 5/Wi-Fi 4/802.11a/b/g Supports 2.4GHz Wi-Fi | 5GHz Wi-Fi Supports 2x2 MIMO，Wi-Fi Direct
- 6.83" CrystalRes AMOLED displayResolution: 1.5K (2772 x 1280)Refresh rate: Up to 120HzTouch sampling rate: Up to 480HzInstantaneous touch sampling rate: 2560Hz*Activated in Game Turbo modeBrightness: 3200 nits peak brightnessBrightness: HBM 1800 nitsColor depth: 12bitContrast ratio: 8000000:1DCI- P3 wide color gamut447PPICorning Gorilla Glass Victus 2Sunlight displayHDR10+ | Dolby Vision16,000-step automatic brightness adjustment3840Hz PWM dimming｜TÜV Rheinland Low Blue Light (Hardware Solution) Certified | TÜV Rheinland Circadian Friendly Certified | TÜV Rheinland Flicker Free Certified
- Snapdragon 7s Gen 44nm manufacturing process technologyCPU: Octa-core processor, up to 2.7GHzGPU: Adreno GPU
- 200MP main cameraOptical Image Stabilization (OIS)0.56μm, 16in1, 2.24μmf/1.77P lens1/1.4" sensor size8MP ultra-wide cameraf/2.2Rear camera video recording4K at 30 fps1080p at 30/60 fps720p at 30 fps - 32MP front camera1/3.6" sensor sizef/2.24P lensFront camera video recording1080p at 30/60 fps720p at 30 fps
For wired charging, the listed figures favor vivo: 90 W FlashCharge for the X300 FE versus 33 W for the Redmi 15. vivo says actual charging power adjusts dynamically with conditions and use, so the rating should not be read as a guaranteed speed for every charge. Xiaomi’s Mexico page says a 33 W charger is included; vivo’s charging specification refers to use of the original charger and cable. [Xiaomi Redmi 15 specifications] [Xiaomi Mexico Redmi 15 specifications] [vivo X300 FE specifications]
How do their processors compare?
Xiaomi lists a Snapdragon 685 for the Redmi 15, while vivo lists a Snapdragon 8 Gen 5 for the X300 FE. The platform names point to different product positioning, but they do not provide a measured performance comparison. No independent benchmark or gaming results are established here, so claims about specific speed differences, frame rates, or sustained performance would go beyond the available evidence.
Rank #2
- USA MARKET ONLY WORK ON TMOBILE MINT TELLO OR ANY UNDER TMOBILE NETWORK PHONE NEEDS A SIM CARD ALREADY ACTIVATED ,OUTSIDE USA WORKS ANY GSM CARRIER SIM GSM FCC ID: 2AFZZRA29G
- Dual SIM (nano SIM + nano SIM or nano SIM + eSIM) NO MICRO SD SLOT. 5G: n1/2/3/5/7/8/12/20/26/28/38/40/41/48/66/77/78 - 4G: LTE FDD: 1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B26/B28/B32/B66 4G: LTE TDD: B38/B40/B41/B42/B48 - 3G: WCDMA: B1/B2/B4/B5/B6/B8/B19 - 2G: GSM: B2/B3/B5/B8
- 6.83" AMOLED displayResolution: 1.5K (2772 x 1280)Refresh rate: Up to 120HzTouch sampling rate: Up to 480HzInstantaneous touch sampling rate: 2560Hz*Activated in Game Turbo modeBrightness: 3200 nits peak brightnessBrightness: HBM 1800 nitsColor depth: 12bitContrast ratio: 8000000:1DCI- P3 wide color gamut447PPICorning Gorilla Glass Victus 2Sunlight displayHDR10+ | Dolby Vision16,000-step automatic brightness adjustment3840Hz PWM dimming｜TÜV Rheinland Low Blue Light (Hardware Solution) Certified | TÜV Rheinland Circadian Friendly Certified | TÜV Rheinland Flicker Free Certified
- MediaTek Dimensity 7400-Ultra4nm manufacturing process technologyCPU: Octa-core processor, up to 2.6GHzGPU: Mali-G615
- 200MP main cameraOptical Image Stabilization (OIS)0.56μm, 16in1, 2.24μmf/1.77P lens1/1.4" sensor size8MP ultra-wide cameraf/2.2Rear camera video recording4K at 30 fps1080p at 30/60 fps720p at 30 fps / Front Camera 20MP front camera1/4" sensor sizef/2.24P lensFront camera video recording1080p at 30/60 fps720p at 30 fps
Which phone has the better camera?
The hardware setups are different. The Redmi 15 lists a 50 MP AI dual-camera system. The X300 FE lists a 50 MP main camera with OIS, a 50 MP telephoto camera with OIS, and an 8 MP wide-angle camera; its front camera is listed at 50 MP with autofocus, compared with 8 MP for the Redmi 15 in Xiaomi’s Mexico listing. Megapixel counts and camera features alone do not prove which phone takes better photos or video.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →vivo identifies the ZEISS Telephoto Extender Gen 2 as compatible with the X300 FE and sold separately. Its availability depends on the market. [vivo X300 FE specifications and store listing] [vivo X300 FE product information] [Xiaomi Mexico Redmi 15 specifications]
Rank #3
- USA MARKET ONLY WORK ON TMOBILE MINT TELLO OR ANY UNDER TMOBILE NETWORK PHONE NEEDS A SIM CARD ALREADY ACTIVATED ,OUTSIDE USA WORKS ANY GSM CARRIER SIM GSM FCC ID: 2AFZZRA29G
- Dual SIM (nano SIM + nano SIM or nano SIM + eSIM) NO MICRO SD SLOT. 5G: n1/2/3/5/7/8/12/20/26/28/38/40/41/48/66/77/78 - 4G: LTE FDD: 1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B26/B28/B32/B66 4G: LTE TDD: B38/B40/B41/B42/B48 - 3G: WCDMA: B1/B2/B4/B5/B6/B8/B19 - 2G: GSM: B2/B3/B5/B8
- 6.83" AMOLED displayResolution: 1.5K (2772 x 1280)Refresh rate: Up to 120HzTouch sampling rate: Up to 480HzInstantaneous touch sampling rate: 2560Hz*Activated in Game Turbo modeBrightness: 3200 nits peak brightnessBrightness: HBM 1800 nitsColor depth: 12bitContrast ratio: 8000000:1DCI- P3 wide color gamut447PPICorning Gorilla Glass Victus 2Sunlight displayHDR10+ | Dolby Vision16,000-step automatic brightness adjustment3840Hz PWM dimming｜TÜV Rheinland Low Blue Light (Hardware Solution) Certified | TÜV Rheinland Circadian Friendly Certified | TÜV Rheinland Flicker Free Certified
- MediaTek Dimensity 7400-Ultra4nm manufacturing process technologyCPU: Octa-core processor, up to 2.6GHzGPU: Mali-G615
- 200MP main cameraOptical Image Stabilization (OIS)0.56μm, 16in1, 2.24μmf/1.77P lens1/1.4" sensor size8MP ultra-wide cameraf/2.2Rear camera video recording4K at 30 fps1080p at 30/60 fps720p at 30 fps / Front Camera 20MP front camera1/4" sensor sizef/2.24P lensFront camera video recording1080p at 30/60 fps720p at 30 fps
Storage, durability, and included items
Storage and memory
Xiaomi’s Mexico specifications list an 8 GB + 256 GB Redmi 15 configuration and microSD expansion up to 2 TB. vivo’s India store lists X300 FE options with 8 GB or 12 GB RAM and 256 GB or 512 GB storage. These are examples of listings for specific markets, not a guarantee that every configuration is sold everywhere. Do not treat memory extension as physical RAM.
Water and dust resistance
The Xiaomi Mexico page lists IP64 and says the device was tested to resist splashes and dust under specific laboratory conditions. Xiaomi also warns that resistance can deteriorate with daily use. IP64 is not a claim of protection against submersion. vivo’s India specifications list IP68 and IP69 for the X300 FE. Ratings are model- and market-specific; they should not be interpreted as unrestricted water resistance.
Rank #4
- USA MARKET ONLY WORK ON TMOBILE MINT TELLO OR ANY UNDER TMOBILE NETWORK PHONE NEEDS A SIM CARD ALREADY ACTIVATED ,OUTSIDE USA WORKS ANY GSM CARRIER SIM GSM FCC ID: 2AFZZRACCG
- SIM 1 + Hybrid (SIM or microSD)2G: GSM: 850 900 1800 1900MHz3G: WCDMA:1/2/4/5/84G: LTE FDD:1/2/3/4/5/7/8/12/13/17/20/26/28/664G: LTE TDD:38/40/41Bluetooth 5.3Wi-Fi Protocol: 802.11a/b/g/n/ac
- 6.67" AMOLED displayResolution: 2400 x 1080Refresh rate: Up to 120HzBrightness: 1800nits peak brightnessBrightness: 500 nits (typ), HBM 1200 nits (typ)Color depth: 10-bitContrast ratio: 5,000,000:1DCI- P3 wide color gamutCorning Gorilla Glass Victus 2Sunlight displayReading mode1920Hz PWM dimming｜TÜV Rheinland Low Blue Light (Hardware Solution) Certified | TÜV Rheinland Flicker Free Certified | TÜV Rheinland Circadian Friendly Certified
- Helio G100-Ultra6nm manufacturing processCPU: Octa-core processor, up to 2.2GHzGPU: Mali-G57 MC2
- 200MP main camera OISf/1.6516-in-1 binning into one large 2.24μm pixel1/1.4” sensor size7P lens8MP ultra-wide cameraf2.22MP macro cameraf2.4Rear camera video recording1080p at 60fps1080p at 30fps720p at 30fps / 32MP front cameraf/2.2Front camera video recording1080p at 30fps720p at 30fps
In-box accessories
Xiaomi’s Mexico listing says a 33 W charger and protective case are included. vivo’s India listing includes a phone case and an applied protective film. Check the local box contents before purchase because included items may vary by market or seller. [Xiaomi Mexico Redmi 15 specifications] [vivo India X300 FE store listing]
What is the price difference?
A valid price difference cannot be calculated from the available listings. The vivo India store displayed ₹94,999 for the selected 12 GB + 256 GB X300 FE configuration, alongside an MRP of ₹119,999. That is a volatile, India-specific listing and should be checked again before purchase. The Xiaomi page available for comparison is a Mexico specifications page, not a same-market Redmi 15 store price. Comparing those figures would mix countries and would not show a like-for-like price difference. [vivo India X300 FE store listing] [Xiaomi Mexico Redmi 15 specifications]
Best Value
- USA MARKET ONLY WORK ON TMOBILE MINT TELLO OR ANY UNDER TMOBILE NETWORK PHONE NEEDS A SIM CARD ALREADY ACTIVATED ,OUTSIDE USA WORKS ANY GSM CARRIER SIM GSM FCC ID: 2AFZZRA8E
- Dual SIM (nano SIM + nano SIM or nano SIM + eSIM) (NoT MICRO SD SLOT) 5G: n1/2/3/5/7/8/20/28/38/40/41/48/66/77/78 / 4G: LTE FDD:1/2/3/4/5/7/8/12/13/17/18/19/20/26/28/32/66 -- 4G: LTE TDD:38/40/41/42/48 -- 3G: 1/2/4/5/6/8/19 -- 2G Quad Band - Bluetooth 5.4Wi-Fi: Wi-Fi 6/6E/Wi-Fi 5/Wi-Fi 4/802.11a/b/g Supports 2.4GHz Wi-Fi | 5GHz Wi-Fi Supports 2x2 MIMO，Wi-Fi Direct
- 6.83" CrystalRes AMOLED displayResolution: 1.5K (2772 x 1280)Refresh rate: Up to 120HzTouch sampling rate: Up to 480HzInstantaneous touch sampling rate: 2560Hz*Activated in Game Turbo modeBrightness: 3200 nits peak brightnessBrightness: HBM 1800 nitsColor depth: 12bitContrast ratio: 8000000:1DCI- P3 wide color gamut447PPICorning Gorilla Glass Victus 2Sunlight displayHDR10+ | Dolby Vision16,000-step automatic brightness adjustment3840Hz PWM dimming｜TÜV Rheinland Low Blue Light (Hardware Solution) Certified | TÜV Rheinland Circadian Friendly Certified | TÜV Rheinland Flicker Free Certified
- Snapdragon 7s Gen 44nm manufacturing process technologyCPU: Octa-core processor, up to 2.7GHzGPU: Adreno GPU
- 200MP main cameraOptical Image Stabilization (OIS)0.56μm, 16in1, 2.24μmf/1.77P lens1/1.4" sensor size8MP ultra-wide cameraf/2.2Rear camera video recording4K at 30 fps1080p at 30/60 fps720p at 30 fps - 32MP front camera1/3.6" sensor sizef/2.24P lensFront camera video recording1080p at 30/60 fps720p at 30 fps
For a useful local comparison, match the country, Redmi 15 network version, RAM and storage configuration, seller, and purchase date. Prices and availability can differ across those variables.
Which should you choose?
- Choose the Redmi 15 if a larger 6.9-inch display and a higher stated battery capacity are your priorities, and the local version’s specifications and bands meet your needs.
- Consider the X300 FE if you prefer a 6.31-inch AMOLED display, want its listed telephoto camera hardware, or need a configuration offered in vivo’s local store.
- Do not choose on price alone using figures from different countries or different storage configurations; compare live prices for matching local variants.
The two phones occupy different specification profiles rather than offering a straightforward one-for-one trade. Which is better depends on screen size, camera configuration, and the exact version and price available where you live.
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.
