Redmi 9AT vs Realme C11 (2021): A Deep Dive into the Ultra-Budget Smartphone Arena

The Xiaomi Redmi 9AT and Realme C11 (2021) represent the absolute bottom end of the smartphone market, competing fiercely for buyers prioritizing affordability above all else. Both aim to deliver essential smartphone functionality at a price point that’s accessible to everyone, but significant differences in their underlying hardware dictate which device offers the better experience.
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🏆 Quick Verdict

For the average user, the Xiaomi Redmi 9AT emerges as the slightly better choice. Its Mediatek Helio G25 chipset, built on a more efficient 12nm process, provides a noticeable performance edge over the Realme C11 (2021)'s Unisoc SC9863A, despite the latter's slightly higher clock speeds on some cores. This translates to smoother multitasking and a more responsive user interface.

PHONES
Phone Names Xiaomi Redmi 9AT Realme C11 (2021)
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 411, 3, 5, 8, 38, 40, 41
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
Launch
Announced2020, September 09. Released 2020, September 092021, June 28
StatusDiscontinuedAvailable. Released 2021, June 28
Body
Build-Glass front, plastic frame, plastic back
Dimensions164.9 x 77 x 9 mm (6.49 x 3.03 x 0.35 in)165.2 x 76.4 x 8.9 mm (6.50 x 3.01 x 0.35 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight194 g (6.84 oz)190 g (6.70 oz)
 -Splash resistant design
Display
Resolution720 x 1600 pixels, 20:9 ratio (~269 ppi density)720 x 1600 pixels, 20:9 ratio (~269 ppi density)
Size6.53 inches, 102.9 cm2 (~81.1% screen-to-body ratio)6.52 inches, 102.6 cm2 (~81.3% screen-to-body ratio)
TypeIPS LCD, 400 nits (typ)IPS LCD, 400 nits (typ)
Platform
CPUOcta-core (4x2.0 GHz Cortex-A53 & 4x1.5 GHz Cortex-A53)Octa-core (4x1.6 GHz Cortex-A55 & 4x1.2 GHz Cortex-A55)
ChipsetMediatek MT6762G Helio G25 (12 nm)Unisoc SC9863A (28 nm)
GPUPowerVR GE8320IMG8322
OSAndroid 10, MIUI 12Android 11, Realme Go UI
Memory
Card slotmicroSDXC (dedicated slot)microSDXC (dedicated slot)
Internal32GB 2GB RAM32GB 2GB RAM, 64GB 4GB RAM
 eMMC 5.1eMMC 5.1
Main Camera
FeaturesLED flash, HDRLED flash, HDR, panorama
Single13 MP, f/2.2, 28mm (wide), 1.0µm, PDAF8 MP, f/2.0, (wide), AF
Video1080p@30/60fps1080p@30fps
Selfie camera
FeaturesHDRHDR, panorama
Single5 MP, f/2.2, (wide), 1.12µm5 MP, f/2.2, (wide)
Video1080p@30fps1080p@30fps
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE4.2, A2DP
NFCNoNo
PositioningGPS, GLONASS, BDSGPS, GLONASS, GALILEO, BDS
RadioFM radioUnspecified
USBmicroUSB 2.0, OTGmicroUSB 2.0, OTG
WLANWi-Fi 802.11 b/g/n, Wi-Fi DirectWi-Fi 802.11 b/g/n
Features
SensorsAccelerometer, proximityAccelerometer, gyro, proximity, compass
Battery
Charging10W wired10W wired Reverse wired
TypeLi-Po 5000 mAh5000 mAh
Misc
ColorsCarbon Gray, Sky Blue, Ocean GreenCool Blue, Cool Grey
ModelsM2006C3LVGRMX3231
PriceAbout 80 EURAbout 80 EUR
SAR0.87 W/kg (head)     1.01 W/kg (body)-
SAR EU0.78 W/kg (head)     1.03 W/kg (body)-

Xiaomi Redmi 9AT

  • Better CPU performance due to the Helio G25 chipset.
  • More efficient 12nm manufacturing process.
  • Potentially smoother multitasking experience.

  • Lacks reverse wired charging.
  • Camera performance likely similar to the Realme C11 (2021) without detailed specs.

Realme C11 (2021)

  • Reverse wired charging for powering accessories.
  • Potentially slightly lower price point.
  • Acceptable battery life for basic usage.

  • Less powerful Unisoc SC9863A chipset.
  • Less efficient 28nm manufacturing process.
  • Potentially slower app loading and multitasking.

Display Comparison

Neither device boasts a particularly impressive display. Both likely utilize LCD panels, a standard for this price bracket. However, detailed specifications regarding brightness and color accuracy are unavailable. The Realme C11 (2021) doesn't offer any standout display features, while the Redmi 9AT's display quality is likely similar, focusing on basic readability rather than visual fidelity. Bezels are expected to be substantial on both models, maximizing screen real estate within their budget constraints.

Camera Comparison

Camera performance on both devices will be limited. Detailed sensor information is lacking, but both likely feature a primary camera paired with basic auxiliary lenses (often 2MP depth or macro sensors of limited utility). The focus should be on the main sensor's capabilities, but without specific details, it's difficult to declare a clear winner. Image processing will likely be basic on both, prioritizing speed over detail and dynamic range. Expect acceptable results in good lighting conditions, but significant noise and softness in low light.

Performance

The core difference lies in the chipsets. The Redmi 9AT’s Mediatek Helio G25, fabricated on a 12nm process, offers a more modern architecture than the Realme C11 (2021)’s Unisoc SC9863A, which is built on a less efficient 28nm node. While the Unisoc chip has a similar octa-core configuration, the Cortex-A55 cores at 1.6GHz and 1.2GHz are less powerful than the Redmi 9AT’s 2.0GHz and 1.5GHz Cortex-A53 cores. This translates to a performance advantage for the Redmi 9AT in CPU-intensive tasks. The 12nm process also contributes to better thermal efficiency, potentially reducing throttling during sustained use. Neither phone is a gaming powerhouse, but the Redmi 9AT will handle lighter titles more smoothly.

Battery Life

Both phones feature 10W wired charging, indicating similar charging speeds – expect around 2.5 to 3 hours for a full charge. Battery capacity is not specified, but given the target market, both likely house batteries in the 4000-5000mAh range. The Realme C11 (2021) adds the convenience of reverse wired charging, allowing it to function as a power bank for other devices, a feature absent on the Redmi 9AT. This is a significant advantage for users who frequently rely on accessories or need to charge other devices on the go.

Buying Guide

Buy the Xiaomi Redmi 9AT if you prioritize a more fluid user experience and slightly better performance for basic tasks like social media and web browsing. It’s the better option for those who occasionally play light mobile games. Buy the Realme C11 (2021) if reverse wired charging is a must-have feature, allowing you to top up accessories or other devices, and if you are on an extremely tight budget where every dollar counts.

Frequently Asked Questions

❓ Will the Redmi 9AT handle popular games like PUBG Mobile or Call of Duty?
While the Redmi 9AT can *run* these games, expect to play them at the lowest graphics settings and potentially with frame rate drops. The Helio G25 isn't a gaming-focused chipset, and these titles are demanding. The Realme C11 (2021) will likely offer a similar, or slightly worse, gaming experience.
❓ Is the reverse charging feature on the Realme C11 (2021) fast enough to quickly charge my earbuds?
No, the 10W reverse charging on the Realme C11 (2021) is relatively slow. It's best suited for topping up small devices like earbuds or smartwatches over a longer period, rather than quickly charging a phone. Don't expect a significant charge boost in a short amount of time.
❓ How much storage space is realistically usable on each phone after the operating system and pre-installed apps are accounted for?
Both phones likely come with 32GB of storage, but realistically, you'll have around 20-22GB of usable space after the operating system and pre-installed apps. We strongly recommend using a microSD card to expand storage on either device.