Realme C21 — Full Specifications, Features & Price in Pakistan

The Realme C21, launched in March 2021, fixed the two biggest complaints about the C20: it added a rear fingerprint sensor and a 13MP triple camera, while moving to 3GB of RAM as standard. With the same Helio G35 chip and 5000mAh battery, it became the sensible middle choice of the 2021 C line-up — more capable than the C20, cheaper than the C25.

Key Specifications at a Glance

Design and Build Quality

The C21 measures 165.2 x 76.4 x 8.9 mm and weighs 190 g. Its back uses a crosshatch-textured pattern in Cross Black or Cross Blue that resists fingerprints and improves grip — a practical design for a phone that will be handled all day. Launch reports note a P2i splash-resistant coating, and Realme's official spec page lists NFC as enabled (region-dependent — see the warning below). The rear-mounted fingerprint sensor is fast and reliable, a major usability upgrade over the C20's face-unlock-only setup.

Display Features

The 6.5-inch IPS LCD offers 720 x 1600 pixels (HD+, 20:9, ~270 ppi) with 400 nits typical brightness behind a waterdrop notch. The panel supports 120Hz touch sampling, which makes touch response feel snappier even though the refresh rate itself is 60Hz.

Processor and Performance

The MediaTek Helio G35 (12 nm) runs eight Cortex-A53 cores at up to 2.3 GHz with an IMG PowerVR GE8320 GPU. It handles popular light games better than the older P22 generation. The meaningful upgrade over the C20 is RAM: 3GB or 4GB of LPDDR4X instead of 2GB, which makes multitasking and app-switching noticeably smoother.

RAM and Storage

Two configurations were sold: 3GB RAM with 32GB storage, and 4GB RAM with 64GB storage, both eMMC 5.1. The 4GB/64GB variant is the one to look for on the used market — it holds more apps in memory and doubles storage headroom. A dedicated microSD slot (up to 256GB) sits alongside the SIMs, so media storage is expandable.

Camera Features

The triple rear camera is led by a 13MP main sensor (f/2.2, PDAF, 5P lens) with 4x digital zoom, joined by a 2MP macro camera (4cm focus) and a 2MP B&W portrait lens. Software features include Night Mode, Chroma Boost, HDR, panorama, portrait mode, and timelapse, with 1080p@30fps video. Daylight photos are decent for the class; the macro and B&W lenses add creative options rather than resolution. The 5MP front camera (f/2.2) includes portrait mode, beauty mode, and HDR for selfies. As with all budget cameras, low-light results are modest.

Battery and Charging

The 5000mAh battery is a C-series hallmark: with the efficient G35 and HD+ display, a healthy unit comfortably lasts a full day of typical use and stretches to two days with light use. Wired charging is 10W over microUSB — slow, so overnight charging is the norm. Reverse charging is supported, letting the phone share power with accessories via OTG.

Software and Updates

The C21 launched on Android 10 with Realme UI 1.0. Per Wikipedia's spec record, units were later updated to Android 11 with Realme UI 2.0. As a discontinued 2021 budget model, it is now outside its official support window — no further OS upgrades or security patches should be expected.

Connectivity and Additional Features

4G LTE with dual-SIM support (tray layout varies by region). Wi-Fi is 802.11 b/g/n, Bluetooth 5.0 with A2DP/LE, and positioning covers GPS, A-GPS, GLONASS, and BDS. Realme's official Australian spec page lists NFC as enabled — this appears region-dependent, so do not assume the Pakistan-market unit has NFC without checking. FM radio, microUSB 2.0 with OTG, 3.5mm headphone jack, and Dirac HD sound tuning are included. Sensors: rear fingerprint, accelerometer, light, proximity, magnetic.

Variants, Colours and Availability

Global variants: 3GB/32GB and 4GB/64GB; colours Cross Black and Cross Blue; dual Nano-SIM with dedicated microSD (tray layout varies). The C21 is discontinued, so only used units circulate. Do not confuse it with the Realme C21Y — the C21Y (June 2021) is a different phone with a Unisoc T610 chip, different dimensions (164.5 x 76 x 9.1 mm, 200 g), and different cameras.

Price in Pakistan and PTA Information

The store-listed price is Rs. 29,999 (Zohaan Mobile Gallery product page, verified 2026-10-11; compare-at Rs. 31,799 shown). This is a used-market price for a discontinued model. Given the choice, the 4GB/64GB variant justifies more than the 3GB/32GB one — confirm which variant the unit is before judging the price. Confirm the latest price with Zohaan Mobile Gallery before buying.

PTA: PTA approval applies per device and IMEI, not per model. Send the unit's IMEI to 8484 and confirm compliant status before paying. How to check PTA approval.

Main Advantages and Limitations

Advantages:

• Rear fingerprint sensor + face unlock — proper biometrics the C20 lacked
• 13MP triple camera with macro and portrait lenses, Night Mode, Chroma Boost
• 3GB/4GB LPDDR4X RAM — meaningful multitasking step up from the C20's 2GB
• 5000mAh battery with reverse charging; TÜV Rheinland durability certification
• Textured, fingerprint-resistant back in two colours

Limitations:

• HD+ 60Hz display only; 10W charging over microUSB is slow
• Discontinued — no further software updates expected
• NFC appears region-dependent; do not assume it on the Pakistan unit
• Macro and B&W lenses are creative extras, not image-quality upgrades
• Easily confused with the C21Y, which is a different phone

Who Should Consider This Phone?

Good fit: buyers who want the most balanced used phone under Rs. 30,000 in this group — proper fingerprint unlock, a versatile triple camera, 3–4GB RAM, and big-battery endurance for calls, social apps, YouTube, and light gaming. The 4GB/64GB variant is the sweet spot.

Look elsewhere if: you need 5G, fast charging, or current software — or stronger cameras and a bigger battery, in which case the C25/C25s in the Realme collection are the step up; browse all mobiles for newer options.

Frequently Asked Questions

What is the price of the Realme C21 in Pakistan?

Rs. 29,999 on Zohaan Mobile Gallery's product page (verified 2026-10-11). Used-market pricing depends on the variant (3GB/32GB vs 4GB/64GB) and condition — confirm with the store.

What is the difference between the Realme C21 and C21Y?

They are different phones. The C21 (March 2021) uses the Helio G35, measures 165.2 x 76.4 x 8.9 mm / 190 g, and has a 13MP + 2MP + 2MP camera. The C21Y (June 2021) uses the Unisoc T610, is 164.5 x 76 x 9.1 mm / 200 g, and has different cameras. Do not mix up their specs or prices.

Does the Realme C21 have a fingerprint sensor?

Yes — a rear-mounted fingerprint sensor, plus face unlock.

What are its RAM and storage options?

3GB + 32GB and 4GB + 64GB (LPDDR4X / eMMC 5.1), with a dedicated microSD slot up to 256GB.

Does it support NFC?

Realme's official spec page lists NFC as enabled, but this appears region-dependent — verify on the specific unit rather than assuming.

Does it support 5G?

No — 4G LTE only.

Is it PTA approved?

PTA status is per-device. Verify the specific unit's IMEI by SMS to 8484 before purchase.

Is it available at Zohaan Mobile Gallery?

The product page is live — check it or WhatsApp +92 305 8452080 for current availability, the exact variant, and price.

Final Verdict

The Realme C21 is the balanced pick of the 2021 budget C-series: fingerprint sensor, 13MP triple camera, 3–4GB RAM, and 5000mAh endurance at a used price under Rs. 30,000. Its honest limits are the HD+ 60Hz display, 10W microUSB charging, finished software support, and the C21Y naming trap.

Call to Action

See the Realme C21 at Zohaan Mobile Gallery, compare it with the Realme collection, or WhatsApp us at +92 305 8452080 for the confirmed current price, the exact variant in hand, and PTA verification. Or visit our Rahim Yar Khan store and check the phone in hand before you buy.