realme 15x 5G

The realme 15x 5G is a large, battery-focused Android phone for buyers who want a big screen and long endurance without moving up to the pricier realme models. According to realme's published specification, it combines a 6.8-inch display that can refresh at up to 144Hz, a 7,000 mAh battery with 60W wired charging, a MediaTek Dimensity 6300 chip, a 50MP Sony main camera and a 50MP front camera. It also claims IP66, IP68 and IP69 protection along with MIL-STD 810H shock resistance, and runs realme UI 6.0 on Android 15. This page is a spec-and-information-based review compiled from realme's product page and specification sheet; it is not a hands-on test, and the manufacturer's lab figures are labelled as claims.

Where it sits in the lineup

The 15x sits near the value end of realme's number series, where the aim is a big battery, a smooth screen and decent durability at a low price rather than a premium camera or a fast processor. The official pages come from realme's India site, which does not give a US price, so none is quoted here. If you are weighing a step up, the realme 16 is the newer number-series model, and the realme 15x vs realme 16 table shows the published figures next to each other. The realme 15T is a sibling with a slimmer body, an AMOLED screen and a 120Hz refresh limit, so the choice between the two is mostly about screen type, thickness and refresh rate. To see how all of these phones compare on the numbers we track, such as battery capacity and refresh rate, see the phone rankings.

Design and build

realme offers the 15x in three named colours: Aqua Blue, Marine Blue and Maroon Red. The product images show a vertical column of three camera elements in the upper left of the back, with a subtle circular pattern on the blue versions and a gradient finish on the red one. The phone measures 166.07 by 77.93 mm and is 8.28 mm thick on the spec sheet, although the marketing page rounds this to 8.2 mm; it weighs 212 g. That is a heavy phone, which is the price of the 7,000 mAh cell, and it is thicker than the 15T. The brand describes its protection as IP66, IP68 and IP69, which it markets as IP69 Pro, and it says the phone passed MIL-STD 810H shock-resistance tests, including multi-angle drop tests. The usual caveats apply: these are controlled-lab ratings, the protection can wear over time and realme advises against charging the phone when it is wet. Extras include a dual card tray that takes two SIMs or one SIM plus a memory card, a USB-C port, and an AI outdoor mode that the brand mentions.

Display

The screen measures 6.8 inches and has an HD+ resolution of 1570 by 720 pixels. Its headline feature is a refresh rate of up to 144Hz, which realme says defaults to an automatic mode balancing smoothness and power, with 144Hz selectable manually in the display settings. Peak brightness is listed at 1,200 nits in high-brightness mode, touch sampling reaches 180Hz, the colour gamut is 83% NTSC with 16.7 million colours, and the screen-to-body ratio is 90.4%. The typical contrast ratio is 1500:1. In plain terms, this is a big, smooth but low-resolution panel. On a screen this size, an HD+ resolution gives softer text and finer details than a full-HD panel, and the 144Hz figure matters most in scrolling and some games, not in image quality. The page also mentions a sunlight-screen mode for outdoor readability. For people who care about smoothness more than sharpness, it is an appealing combination at a low price; for those who read a lot of small text or watch high-resolution video, it is a clear compromise.

Performance, memory and software

The phone uses the MediaTek Dimensity 6300, a 6nm octa-core 5G chip with cores running at up to 2.4GHz and an Arm Mali-G57 MC2 graphics unit. realme cites an AnTuTu score of 429,351 on the page; that is a manufacturer-supplied figure and should be read with caution, but it places the chip in the entry-level 5G class: fine for messaging, browsing, video and casual games, limited for heavy 3D titles. The spec sheet lists 6GB or 8GB of RAM and 128GB or 256GB of storage, and says dynamic RAM can reach up to 10GB, while the marketing page promotes up to 18GB of dynamic RAM described as 10GB plus 8GB of expansion with the 256GB model. Because the two pages describe the memory differently, treat the physical RAM figure on the specification sheet, 8GB at most, as the reliable one; the rest is storage borrowed to act as virtual memory. The phone runs realme UI 6.0 based on Android 15 per the specification sheet. The official page does not say how many Android or security updates it will receive, so buyers who keep phones for several years should check that.

Camera

The rear camera is a 50MP main sensor from Sony, listed as the IMX852, with an f/1.8 aperture, a 28mm equivalent focal length, a five-element lens and a 1/2.93-inch sensor. realme's page names no ultrawide, macro or depth camera in the specification, so this should be treated as a single-camera phone. The front camera is also 50MP, listed with an f/2.4 aperture and a wide 87-degree field of view, which is a high resolution for selfies at this level. Photo modes include portrait, night, panorama, cinematic, time-lapse, a high-resolution mode, underwater and pro modes, along with street photography and AI landscape modes. Video recording on the rear camera is limited to 1080p at 30 fps, with a 720p slow-motion mode at 120 fps; the front camera can record 1080p at 30 or 60 fps. There is no 4K video here. For everyday photos in good light, a 50MP main sensor is capable, and the large front camera suits video calls, but expect limits in low light and no flexibility from extra lenses.

Battery and charging

The battery is the star: 7,000 mAh typical, with a rated minimum of 6,820 mAh, marketed as the Titan battery. Charging is 60W SUPERVOOC, with a boost charging mode, and the specification sheet lists an 80W adapter in the box on the India listing. Reverse charging is rated at 6.5W, and realme advertises bypass charging that powers the phone directly during gaming and claims support for 1,600 charge cycles. As always, these are the maker's claims and box contents can vary by market. A cell of this size points to very long endurance on paper, though realme publishes no runtime figure on the pages we used. The trade-off is weight and thickness, and the usual one that a large battery takes a long time to fill even at 60W.

Who it is for and the compromises

The realme 15x suits people who want a big, smooth screen, very long battery life and robust protection at a low price: students, commuters, heavy video watchers and anyone who finds charging every night a chore. The compromises are real. The HD+ resolution limits sharpness, the entry-level processor limits demanding games, there is a single useful rear camera, video tops out at 1080p, the phone is heavy at 212 g and the memory figures on realme's pages are marketed in a way that needs careful reading. The release date shown here is the approximate date supplied for this catalogue, because realme's pages do not state a launch date. If you want a thinner body and an AMOLED screen, look at the realme 15T; if you want the latest number series, the comparison with the realme 16 is a good next stop.