Redmi 4X – Key Highlights

Released in March 2017, the Redmi 4X is a budget-friendly compact phone that focuses on one thing above all else: incredible battery life. It became famous for packing a large battery into a small, comfortable body, and is considered one of the best value phones of its generation.

🔋 Battery Life: The Absolute Legend

The Redmi 4X's standout feature is its 4,100mAh battery combined with a low-power 5-inch 720p screen. This delivers exceptional endurance:

Real-world experience: Moderate to heavy users can easily get two full days of battery life. In testing, after 4 hours of continuous use, the phone still had 59% battery remaining.

Note on charging: Only supports 5V/2A (10W) charging — no fast charging. A full charge takes about 2.5 hours.

📱 Display: Small and Comfortable

• 5.0-inch HD LCD screen (1280 x 720 resolution, 294 ppi) — clear enough for daily use

• 2.5D curved glass with Gorilla Glass protection

• 450 nits brightness — usable outdoors

• Features: Reading mode, Night display, Color temperature adjustment

What users say: The 5-inch screen makes the phone perfect for one-handed use — rare in today's world of giant phones. However, the screen may have a slight yellowish tint, but you can adjust this in settings.

🚀 Performance: Solid for Daily Tasks

Benchmark scores (for reference):

• PCMark Work 3.0: 3,802

• PCMark battery life: 7.5 to 11+ hours

• 3DMark Sling Shot Extreme: ~312 (graphics at 2-3 FPS)

What this means for you:

• Daily apps (social media, browsing, YouTube, messaging) — smooth, no noticeable lag

• Light gaming (Clash of Clans, Temple Run, Subway Surfers) — runs fine

• Heavy 3D gaming (PUBG, newer titles) — not recommended — GPU struggles significantly

• Multitasking — The 3GB/4GB versions handle multiple apps well

📸 Camera: Decent in Good Light

Rear Camera:

• 13MP sensor (f/2.0 aperture, 5-element lens)

• PDAF phase detection autofocus — fast focusing

• Features: HDR mode, Panorama, Face recognition, Real-time filters

Front Camera:

• 5MP sensor (f/2.2 aperture)

• 2nd-gen 36-level smart beautification — real-time beautify

Real talk:

• Daylight: Good colors, decent detail, very fast shutter speed (almost no delay)

• Low-light: Struggles — grainy images, limited detail

• Verdict: Fine for everyday snapshots and social media. Don't expect flagship quality.

"The best thing about the camera is its shutter speed. There is almost no delay between pressing the camera button and the picture being taken." — TechJuice review

🛠️ Features You'll Actually Use

Software: Ships with MIUI 8 based on Android 6.0 Marshmallow — dated now, the phone no longer receives updates.

Notable MIUI features:

• Second Space — Run two completely separate phone setups (work/personal)

• Dual Apps — Clone apps to use multiple accounts simultaneously

🎨 Build & Design

• Metal body with premium matte finish — feels better than its price suggests

• 2.5D curved glass on the front

• Three colors: Cherry Pink, Champagne Gold, Matte Black

• Dimensions: 139.24 x 69.96 x 8.65mm

• Weight: 150g — light and comfortable

• Compact size — perfect for one-handed use

Design note: Some users report the bottom speaker grille gets muffled when gaming or watching videos because your hand covers it.

⚠️ The Trade-offs (Important)

• No fast charging — 2.5 hours for a full charge feels slow in 2025

• Weak 3D gaming — Don't buy this for PUBG or heavy games

• 720p screen — Fine for daily use, but not as sharp as modern 1080p displays

• Color accuracy? Not quite — Slight yellowish tint out of the box (fixable in settings)

• No USB-C — Micro-USB feels very dated in 2025

• Dated Android — Stuck on Android 6.0/7 (MIUI 8/9) — no security updates

• Hybrid SIM slot — Can't use 2 SIMs and a microSD at the same time

• No NFC — No Google Pay

📊 Quick Spec Summary

🎯 Bottom Line: Who Is This For?

The Redmi 4X is a great choice for:

• Seniors — Small, light, comfortable, amazing battery life, simple to use

• Backup phone users — Cheap, reliable, lasts days on a charge

• People who hate big phones — 5-inch screens are rare today

• Budget-conscious users who just need calls, texts, messaging, and light browsing

• Travelers — That battery will easily last a weekend trip without a charger

• IR blaster fans — Control your TV and AC from your phone

Skip it if:

• You play 3D games (PUBG, Call of Duty, Genshin Impact) — performance is poor

• You need good low-light photos — Camera struggles at night

• You care about software updates — This phone has long been abandoned

• You want USB-C or fast charging — This is old tech now

• You use Google Pay — No NFC means no contactless payments