Xiaomi Redmi Note 15 Pro+ vs Samsung Galaxy S25 Ultra: Which Should You Buy?

TL;DR

Xiaomi Redmi Note 15 Pro+ vs Samsung Galaxy S25 Ultra is a budget-versus-flagship choice. The Redmi Note 15 Pro+ is the cheaper phone, from BDT 40,499. The Galaxy S25 Ultra suits buyers who want the stronger camera, display and chip. Meanwhile, the Redmi suits buyers who want a bigger battery, faster charging and a better selfie camera.

Price difference: the Redmi Note 15 Pro+ starts at BDT 40,499 and the Galaxy S25 Ultra at BDT 95,000, BDT 54,501 apart.

Redmi Note 15 Pro+

• Pick it if you want a big battery and fast charging, and the Redmi Note 15 Pro+ has 6500 mAh with 100W
• Skip it if you want the stronger camera and display, since the Redmi Note 15 Pro+ has a 447 ppi screen

Galaxy S25 Ultra

• Pick it if you want the stronger camera, display and chip, and the Galaxy S25 Ultra costs BDT 95,000
• Skip it if your budget stops below BDT 95,000, the Galaxy S25 Ultra's entry price

Key differences: Xiaomi Redmi Note 15 Pro+ vs Samsung Galaxy S25 Ultra

Also different, not on the card:

Same on both: Bluetooth 5.4, NFC, 200 MP main camera.

Design and build: Xiaomi Redmi Note 15 Pro+ and Samsung Galaxy S25 Ultra compared

Galaxy S25 Ultra pairs a titanium frame (grade 5) with a glass back (Gorilla Glass Victus 2). Redmi Note 15 Pro+ is lighter, since it uses a fiber-reinforced plastic or silicone polymer back (eco leather) instead. The Xiaomi phones page lists every model from the brand, Redmi Note 15 Pro+ included. Likewise, the Samsung phones page gathers Samsung's range, including the Galaxy S25 Ultra.

Size, weight and materials compared

Redmi Note 15 Pro+ measures 163.34 mm by 78.31 mm. Its thickness varies by colour, starting at 8.19 mm. Galaxy S25 Ultra lists body dimensions of 162.8 x 77.6 x 8.2 mm. Redmi Note 15 Pro+ weighs 207.1 g, whereas Galaxy S25 Ultra reaches 218 g. Xiaomi Redmi Note 15 Pro+ has its own page with its full specifications and prices.

Both phones use glass on the front, but the protection differs. Redmi Note 15 Pro+ has a glass front (Gorilla Glass Victus 2). Galaxy S25 Ultra, however, has a glass front (Corning Gorilla Armor 2).

Water resistance and colours comparison

Redmi Note 15 Pro+ carries IP68/IP69K protection, which adds high-pressure resistance. Galaxy S25 Ultra also lists dust and water protection, and its sheet adds a stylus.

Redmi Note 15 Pro+ comes in these colours: Glacier Blue, Mocha Brown, Black. Galaxy S25 Ultra offers a wider palette: Titanium Silver Blue, Titanium Black, Titanium White Silver, Titanium Gray, Titanium Jade Green, Titanium Jet Black, Titanium Pink Gold. Samsung also hosts its own Samsung Galaxy S25 Ultra page.

Connectivity, ports and audio: pros and cons

On the Xiaomi Redmi Note 15 Pro+ vs Samsung Galaxy S25 Ultra specs question, Wi-Fi stands out. Galaxy S25 Ultra supports Wi-Fi 7, while Redmi Note 15 Pro+ supports Wi-Fi 6E. Bluetooth is 5.4 on Redmi Note 15 Pro+ and 5.4 on Galaxy S25 Ultra. Both phones also support NFC. Samsung Galaxy S25 Ultra gives the complete spec sheet and price list on its product page.

Redmi Note 15 Pro+ takes two Nano SIMs in a dual-SIM setup. Galaxy S25 Ultra, in its international version, lists: Nano-SIM, Nano-SIM, eSIM and eSIM (max 2 at a time).

Galaxy S25 Ultra has stereo speakers, but its sheet says no 3.5mm jack. Redmi Note 15 Pro+ also adds Dolby Atmos support. Samsung news, such as Samsung Galaxy S25 FE Launch, covers the same series as Galaxy S25 Ultra.

Display: Samsung Galaxy S25 Ultra's screen leads the Redmi Note 15 Pro+

Samsung Galaxy S25 Ultra wins on display, with a larger, sharper panel. Its screen measures 6.9 inches at 1440 x 3120 pixels. Redmi Note 15 Pro+ has a 6.83 inches screen at 1280 x 2772 pixels, so it trails on both counts. Xiaomi describes the Xiaomi Redmi Note 15 Pro+ in its own words on its website.

Screen size, resolution and panel type compared

Galaxy S25 Ultra has a 6.9 inches screen, while Redmi Note 15 Pro+ has a 6.83 inches one. Resolution is 1440 x 3120 pixels on Galaxy S25 Ultra. Redmi Note 15 Pro+ offers 1280 x 2772 pixels, so Galaxy S25 Ultra packs more pixels. Redmi Note 15 Pro+ reaches a pixel density of 447 ppi.

The Redmi uses an AMOLED panel. Galaxy S25 Ultra runs a Dynamic LTPO AMOLED 2X screen with an LTPO design. In other words, its refresh rate can drop when the picture is still. Besides, the Samsung Galaxy S24 FE sits in the same line as the Galaxy S25 Ultra.

Brightness, refresh rate and screen protection

Galaxy S25 Ultra has a rated brightness of 2600 nits (peak) and a 120Hz refresh rate. It also supports HDR10+ and carries a DX anti-reflective coating. These figures matter especially for buyers who watch video in bright rooms.

Redmi Note 15 Pro+ protects its glass with Corning Gorilla Glass Victus 2. Galaxy S25 Ultra uses Corning Gorilla Armor 2 instead. I compared the glass names, and Corning supplies both. Google makes the Google Pixel 10 Pro XL, and another Google phone appears on this page too.

Performance: Samsung Galaxy S25 Ultra's chip and RAM lead the Redmi Note 15 Pro+

Samsung Galaxy S25 Ultra wins on chip, and it also wins on RAM. Galaxy S25 Ultra carries the Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm). Redmi Note 15 Pro+ uses the Qualcomm SM7635-AC Snapdragon 7s Gen 4. That lead matters for demanding apps, since Galaxy S25 Ultra pairs a flagship chip with more memory.

Chipset, CPU cores and RAM

Both Redmi Note 15 Pro+ and Galaxy S25 Ultra have octa-core CPUs, so the count matches. I analysed the layouts: Galaxy S25 Ultra has 2 cores at 4.47 GHz and 6 cores at 3.53 GHz. Redmi Note 15 Pro+ instead uses 1 core at 2.7 GHz, 3 cores at 2.4 GHz and 4 cores at 1.8 GHz. Galaxy S25 Ultra reaches a top clock of 4.47 GHz, so its fastest cores finish work sooner. Redmi Note 15 Pro+ tops out at 2.7 GHz.

Redmi Note 15 Pro+ comes with 8 GB of RAM. Galaxy S25 Ultra, meanwhile, offers 12GB and 16GB RAM versions.

Galaxy S25 Ultra benchmark results

Samsung Galaxy S25 Ultra posts an AnTuTu score of 2,207,809 (v10). Its Geekbench score is 9,846 (v6), and its 3DMark score is 6,687 (Wild Life Extreme). Each score carries its test version, so a buyer can match it elsewhere.

Software and update support review

Redmi Note 15 Pro+ runs Android 15 with HyperOS 2. Galaxy S25 Ultra launched on Android 15 as well, so both phones share that Android version.

Galaxy S25 Ultra's sheet lists up to 7 major OS updates, which suits long-term owners. Flagship shoppers also weigh Galaxy S25 Ultra against the OnePlus 13. Xiaomi, maker of Redmi Note 15 Pro+, also builds the Xiaomi 14 Ultra.

Gaming on the Redmi Note 15 Pro+ and Galaxy S25 Ultra

Galaxy S25 Ultra runs the Adreno 830 (1200 MHz) GPU, whereas Redmi Note 15 Pro+ runs the Adreno 810. Galaxy S25 Ultra also wins on chip, which matters most for demanding games.

The graphics presets and target FPS are estimates from each phone's chipset class and refresh rate, not measured results; ✓ marks the higher target FPS.

The Galaxy S25 Ultra posts its own 3DMark score of 6,687 (Wild Life Extreme). Its screen refreshes at 120Hz and measures 6.9 inches, so games get more room. Android Authority's Samsung Galaxy S25 Ultra Review also adds an outside view.

Redmi Note 15 Pro+ pairs 8 GB of RAM with this CPU layout: 1 core at 2.7 GHz, 3 cores at 2.4 GHz and 4 cores at 1.8 GHz. Its Adreno 810 GPU suits casual games, but medium settings are the sensible target. Buyers can also check the Xiaomi 15 Pro from the same maker. Google Pixel 10 Pro hails from a maker beyond Xiaomi and Samsung.

Camera: Galaxy S25 Ultra wins the rear cameras, Redmi Note 15 Pro+ wins selfies

Samsung Galaxy S25 Ultra wins the camera category, while Xiaomi Redmi Note 15 Pro+ wins on selfies. So on the Xiaomi Redmi Note 15 Pro+ vs Samsung Galaxy S25 Ultra camera question, the answer splits.

Rear cameras and zoom

Both Redmi Note 15 Pro+ and Galaxy S25 Ultra list a 200 MP main camera. However, Galaxy S25 Ultra adds long zoom: 200 MP wide, 10 MP telephoto with 3x optical zoom, 50 MP periscope telephoto with 5x optical zoom and 50 MP ultrawide. Redmi Note 15 Pro+ also lists 200 MP wide and 8 MP ultrawide on its sheet.

Galaxy S25 Ultra's source list names these features: Laser AF, Best Face, LED flash, auto-HDR and panorama. Redmi Note 15 Pro+ lists these features: Auto Flash, Face detection and Touch to focus. Samsung's A series, such as the Samsung Galaxy A16, sits below the S series of the Galaxy S25 Ultra.

Selfie camera review

Redmi Note 15 Pro+ wins on selfies, with a 32 MP front camera. Galaxy S25 Ultra has a 12 MP front camera, so the resolution gap favours the Redmi.

Galaxy S25 Ultra records selfie video up to 4K at 60fps. It also lists HDR and HDR10+ for the front camera. Redmi Note 15 Pro+ lists 1920 x 1080 as its top selfie video resolution, but gives no frame rate.

Video recording rating

Galaxy S25 Ultra records rear video up to 8K at 30fps. It also offers 4K at up to 120fps and 1080p at up to 240fps. Its recording features include 10-bit HDR, HDR10+, stereo sound recording and gyro-EIS. Redmi Note 15 Pro+ tops out at 3840 x 2160 for rear video. It also lists 1920 x 1080.

Additionally, the Samsung Galaxy S25 Edge belongs to the Galaxy S25 Ultra's own series.

Battery and charging: Redmi Note 15 Pro+ leads the Galaxy S25 Ultra

Xiaomi Redmi Note 15 Pro+ wins on both battery capacity and charging speed. So on the Xiaomi Redmi Note 15 Pro+ vs Samsung Galaxy S25 Ultra battery question, the Redmi leads. The Galaxy S25 Ultra answers with wireless extras rather than speed.

Battery capacity

Redmi Note 15 Pro+ packs a 6500 mAh lithium-ion battery. Galaxy S25 Ultra carries 5000 mAh instead, so the Redmi holds the larger rated capacity. However, that rating covers capacity only, not hours of battery life. Samsung's A-series phones, such as the Samsung Galaxy A16 5G, are separate models.

Charging speed, wireless and reverse charging

Redmi Note 15 Pro+ charges at 100W wired, with a source claim of 100% in 40 minutes. Galaxy S25 Ultra is rated lower at 45W wired, and its claim is 65% in 30 minutes. The Redmi's claim covers a full charge, whereas the Samsung claim covers a partial one. These times are source claims, not measured results. Still, the wattage gap favours the Redmi.

Galaxy S25 Ultra adds 15W wireless (Qi2 Ready) and 4.5W reverse wireless charging. Redmi Note 15 Pro+ offers 22.5W reverse wired charging for powering other devices. Galaxy S25 Ultra suits cable-free charging, while the Redmi suits fast refills. Your pick depends on whether you own a Qi charger or prefer a cable.

Value for money: what each price buys in Bangladesh

The Redmi Note 15 Pro+ wins the price category against the Galaxy S25 Ultra. On price in Bangladesh, the flagship asks far more. The Galaxy S25 Ultra also meets another Xiaomi model in Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra, which suits Xiaomi fans. Buyers with a different shortlist can read Apple iPhone 17 vs OnePlus 13 instead. Check the Xiaomi Redmi Note 15 Pro+ vs Samsung Galaxy S25 Ultra price in Bangladesh on the day you buy.

Price gap and lowest prices

The Redmi Note 15 Pro+ has the lowest price at BDT 40,499, last checked on 25 Oct 2026. The Galaxy S25 Ultra, however, starts at BDT 95,000, checked on 26 Oct 2026. That leaves a gap of BDT 54,501 between the two phones. Our team tracks these prices weekly across popular shops in Bangladesh. Each price shows the date we checked it.

I compared the matching storage tier too, and each phone's price there equals its entry price. As a result, the like-for-like gap stays the same. Another maker's phone faces the Galaxy S25 Ultra in Galaxy S25 Ultra vs Pixel 9 Pro XL.

Storage options and card slot comparison

The Galaxy S25 Ultra wins storage, offering 256GB, 512GB and 1TB across 4 storage and RAM versions. The Redmi Note 15 Pro+, in contrast, lists 256 GB of internal storage. Samsung's sheet also pairs that storage with 12GB and 16GB RAM. That range suits buyers who keep large photo and video libraries.

Moving up on the Galaxy S25 Ultra costs BDT 105,990 for the middle tier. The top tier costs BDT 145,000. The flagship has no card slot, so buyers must settle on a size at purchase.

What the extra money buys

Against that price gap, the Galaxy S25 Ultra wins camera and display, which suits photo-focused buyers. The Redmi Note 15 Pro+ wins battery capacity and charging, so it suits buyers who want a larger battery. Therefore, the larger sum pays off most for buyers who will fully use that camera and display.

The Redmi Note 15 Pro+ is the newer phone, whereas the Galaxy S25 Ultra launched earlier. Two phones from one maker meet in Apple iPhone 17 Pro vs Apple iPhone 17. Also, Google Pixel 10 vs OnePlus 13 features a phone with its own page linked here.

Which to buy: Xiaomi Redmi Note 15 Pro+ vs Samsung Galaxy S25 Ultra by buyer type

The Redmi Note 15 Pro+ is the pick on price, battery capacity, charging and selfies. In contrast, the Galaxy S25 Ultra is the pick on camera, display, chip, RAM and storage. Your priorities decide which set of wins matters more.

The verdict: budget buyers should pick the Redmi Note 15 Pro+, which starts at BDT 40,499. Camera and display buyers should pick the Galaxy S25 Ultra, but its entry price is BDT 95,000. Samsung Galaxy S25 Ultra vs OnePlus 13 weighs the Galaxy against a rival also linked here. Next, the Pixel 10 Pro vs OnePlus 13 comparison brings back a phone linked elsewhere on this page. Samsung's series also appears in iPhone 16 Pro Max vs Galaxy S25+. Two other makers meet in iPhone 17 vs Pixel 10. Meanwhile, Pixel 10 Pro vs Pixel 10 Pro XL keeps one maker on both sides. Before you buy, compare prices across the shops we monitor. The lowest price is BDT 40,499, last updated on 25 Oct 2026.