Umidigi F3S vs Realme 9i 5G: A Deep Dive into Budget 5G Performance

The sub-$200 smartphone market is fiercely competitive, and the Umidigi F3S and Realme 9i 5G represent compelling options for users seeking 5G connectivity without breaking the bank. However, significant differences in their core components – specifically the chipset and charging capabilities – dictate vastly different user experiences. This comparison dissects these differences to determine which device delivers the best value.
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🏆 Quick Verdict

For the average user prioritizing responsiveness and future-proofing, the Realme 9i 5G is the clear winner. Its Mediatek Dimensity 810 chipset, built on a more efficient 6nm process, provides a substantial performance advantage over the Umidigi F3S’s Unisoc T610, making it better suited for multitasking and demanding applications. While the F3S offers a lower entry price, the 9i 5G’s faster charging and superior processing power justify the price difference.

PHONES
Phone Names Umidigi F3S Realme 9i 5G
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 661, 2, 3, 4, 5, 7, 8, 19, 20, 28, 34, 38, 39, 40, 41
5G bands-1, 5, 7, 8, 28, 41, 77, 78 SA/NSA
SpeedHSPA, LTEHSPA, LTE, 5G
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE / 5G
Launch
Announced20222022, August 18
StatusAvailable. Released 2022Available. Released 2022, August 24
Body
Dimensions168.3 x 76.6 x 8.8 mm (6.63 x 3.02 x 0.35 in)164.4 x 75.1 x 8.1 mm (6.47 x 2.96 x 0.32 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight195 g (6.88 oz)187 g (6.60 oz)
Display
Protection-Panda Glass
Resolution720 x 1650 pixels (~269 ppi density)1080 x 2408 pixels, 20:9 ratio (~400 ppi density)
Size6.7 inches, 106.2 cm2 (~82.3% screen-to-body ratio)6.6 inches, 104.9 cm2 (~85.0% screen-to-body ratio)
TypeIPS LCDIPS LCD, 90Hz, 400 nits (typ)
Platform
CPUOcta-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
ChipsetUnisoc T610 (12 nm)Mediatek Dimensity 810 (6 nm)
GPUMali-G52 MP2Mali-G57 MC2
OSAndroid 11Android 12, upgradable to Android 13, Realme UI 4.0
Memory
Card slotmicroSDXC (uses shared SIM slot)microSDXC (dedicated slot)
Internal128GB 6GB RAM64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
 -UFS 2.2
Main Camera
FeaturesDual-LED flash, HDR, panoramaLED flash, HDR, panorama
Single-8 MP, f/2.0, 27mm (wide)
Triple48 MP, f/1.8, (wide), 1/2.0", AF 8 MP, f/2.2, 120˚ (ultrawide) 5 MP (macro)50 MP, f/1.8, 26mm (wide), 1/2.76", 0.64µm, PDAF Unspecified MP, 46mm (telephoto) 2 MP (macro)
Video1080p@30fps1080p@30fps
Selfie camera
Features-HDR, panorama
Single16 MP, f/2.2, (wide)8 MP, f/2.0, 27mm (wide)
Video1080p@30fps1080p@30fps
Sound
3.5mm jack -Yes
35mm jackYesYes
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE5.2, A2DP, LE
NFCYesNo
PositioningGPS, GALILEO, GLONASS, BDSGPS, GLONASS, GALILEO, BDS
RadioWireless FM radioNo
USBUSB Type-C, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band
Features
SensorsFingerprint (side-mounted), accelerometer, proximity, compassFingerprint (side-mounted), accelerometer, proximity, compass
Battery
Charging10W wired18W wired
Type5150 mAh5000 mAh
Misc
ColorsHawaii Blue, Matte Silver, Starry Black, Sunglow Gold, Galaxy BlueSoulful Blue, Rocking Black, Gold
Models-RMX3612
Price-About 180 EUR

Umidigi F3S

  • Lower price point makes it accessible to budget-conscious buyers.
  • Functional for basic smartphone tasks.
  • Acceptable performance for light usage.

  • Significantly slower performance compared to the Realme 9i 5G.
  • Slow 10W charging.
  • Less future-proof due to the older chipset.

Realme 9i 5G

  • Faster and more efficient Mediatek Dimensity 810 chipset.
  • Faster 18W wired charging.
  • Better performance for gaming and multitasking.

  • Slightly higher price point.
  • May still lack advanced features found in higher-end phones.
  • Camera performance, while better, is still limited by the budget sensor.

Display Comparison

Neither device boasts a standout display. While specific panel details (like peak brightness or color gamut coverage) are unavailable, the core difference lies in the processing power driving the display. The Realme 9i 5G’s Dimensity 810 will likely handle display rendering more efficiently, resulting in smoother animations and transitions. Bezels are expected to be comparable given the price point, and both likely utilize IPS LCD panels, meaning viewing angles and color accuracy won't be exceptional.

Camera Comparison

Without detailed camera specs, a direct comparison is difficult. However, given the price bracket, both phones likely feature a primary sensor paired with basic auxiliary lenses. The Realme 9i 5G’s more powerful ISP (Image Signal Processor) within the Dimensity 810 chipset will likely result in better image processing, particularly in low-light conditions. Expect improved noise reduction and dynamic range. The Umidigi F3S will likely struggle with complex scenes and low-light photography.

Performance

The performance gap is the most significant differentiator. The Realme 9i 5G’s Mediatek Dimensity 810 (6nm) is a substantial upgrade over the Umidigi F3S’s Unisoc T610 (12nm). The 6nm process node translates to improved power efficiency and reduced heat generation, allowing the Dimensity 810 to sustain higher clock speeds for longer periods. The CPU architecture also favors the Realme: Cortex-A76 cores (2x2.4 GHz) in the 9i 5G are significantly more powerful than the Cortex-A75 cores (2x1.8 GHz) in the F3S. This difference will be noticeable in app launch times, multitasking, and gaming performance. The 9i 5G is better equipped for demanding games and applications.

Battery Life

While battery capacity isn't specified, the Realme 9i 5G’s 18W wired charging is a clear advantage over the Umidigi F3S’s 10W charging. This translates to significantly faster charging times, reducing downtime. Even with a similar battery capacity, the 9i 5G will spend less time tethered to a charger. The Dimensity 810’s 6nm efficiency also contributes to better battery life during usage, offsetting any potential capacity differences.

Buying Guide

Buy the Umidigi F3S if you need a functional smartphone for basic tasks like calls, texts, and light social media browsing, and your budget is extremely limited. You're willing to accept slower performance and longer charging times. Buy the Realme 9i 5G if you prioritize a smoother user experience, faster app loading times, and the ability to handle more demanding applications, and you want a phone that will remain usable for longer. The 9i 5G is the better choice for gamers and those who frequently multitask.

Frequently Asked Questions

❓ Will the Unisoc T610 in the Umidigi F3S struggle with popular games like PUBG Mobile?
Yes, the Unisoc T610 is likely to struggle with PUBG Mobile, even at lower settings. The chipset lacks the graphical horsepower and sustained performance needed for a smooth gaming experience. Expect noticeable frame drops and lag, especially during intense firefights. The Realme 9i 5G’s Dimensity 810 is far better suited for gaming.
❓ How long will it take to fully charge the Umidigi F3S with its 10W charger?
With a 10W charger, fully charging the Umidigi F3S will likely take over 3 hours, potentially even longer depending on the battery capacity. This is a significant drawback compared to the Realme 9i 5G’s 18W charging, which can achieve a full charge in around 1.5 to 2 hours.
❓ Is the 5G connectivity on both phones equally reliable?
The 5G connectivity itself will depend on network availability in your area. However, the Dimensity 810 in the Realme 9i 5G generally offers better modem efficiency and broader 5G band support compared to the Unisoc T610, potentially leading to more stable and faster 5G connections.
❓ Does the Realme 9i 5G experience significant overheating during prolonged use?
The Mediatek Dimensity 810’s 6nm process helps mitigate overheating. While some warmth is expected during demanding tasks like gaming, the 9i 5G is unlikely to experience severe throttling or uncomfortable temperatures. The Umidigi F3S, with its less efficient chipset, may heat up more noticeably.