Samsung Galaxy S21 specifications
The Samsung Galaxy S21 (models SM-G991B / SM-G9910) launched in January 2021 as Samsung’s value flagship, shipping in India with the Exynos 2100. It pairs a 6.2-inch FHD+ flat AMOLED with a triple camera and a distinctive polycarbonate (“glasstic”) back.
Body & Build
Dimensions are 151.7 × 71.2 × 7.9 mm at 169 g. Aluminium frame with Gorilla Glass Victus front and a plastic (polycarbonate) back, IP68 rated. The plastic back makes rear-panel repair cheaper and less fragile than glass-back models.
Display
6.2-inch Dynamic AMOLED 2X at 1080 × 2400 (FHD+), 48–120Hz adaptive, HDR10+, up to 1300 nits peak.
Platform
Exynos 2100 (5nm, India) with 8GB RAM. Storage: 128GB to 256GB. Shipped with Android 11 / One UI 3.1.
Cameras
Triple rear — 12MP main (f/1.8, OIS), 64MP telephoto (3× hybrid), 12MP ultrawide. 10MP front camera. 8K video.
Battery & Charging
4000mAh battery with 25W wired, 15W wireless and 4.5W reverse wireless charging, over USB-C 3.2.
Connectivity & Sensors
5G, dual-SIM (nano + eSIM), Wi-Fi 6, Bluetooth 5.0, NFC, GPS. Ultrasonic in-display fingerprint, full sensor suite.
Samsung Galaxy S21 repair pricing
Transparent rates. Pay only after the repair works.
| Repair | From |
|---|---|
| Display replacement (full assembly) | ₹7,999 |
| Display — OLED-grade original | ₹12,999 |
| Glass only (front) | ₹3,499 |
| Battery replacement | ₹2,499 |
| Charging port repair | ₹1,699 |
| Speaker repair | ₹1,599 |
| Microphone repair | ₹1,599 |
| Button repair | ₹1,499 |
| Back glass replacement | ₹2,999 |
| Data recovery | ₹1,499 |
| Motherboard repair | ₹2,999 |
| Camera repair | ₹1,899 |
| Camera glass replacement | ₹999 |
| Water damage treatment | ₹1,499 |
| Wi-Fi / network repair | ₹1,799 |
| Software / OS repair | ₹499 |
Prices include genuine-equivalent OEM parts, doorstep service, and a 6-month warranty. Final price confirmed after a free on-site diagnosis.
Why Phone Dudes for Samsung Galaxy S21
Doorstep service
A technician comes to your home or office anywhere in Bangalore. Watch the repair happen — no drop-off, no waiting at a store.
Same-day, 45–90 min
Most Samsung Galaxy S21 repairs — screen, battery, charging port — are completed on-site the same day.
6-month warranty
Every Samsung Galaxy S21 repair includes a 6-month warranty on parts and labour. No fix, no pay.
Samsung Galaxy S21 repair — frequently asked questions
How much does Samsung Galaxy S21 screen replacement cost in Bangalore?
Galaxy S21 AMOLED display replacement starts at ₹7,999, with an original-grade Dynamic AMOLED 2X option available. All prices include taxes and free doorstep pickup and drop.
Do you offer a warranty on Galaxy S21 repairs?
Yes. Every Galaxy S21 repair includes our free XCare+ warranty for up to 6 months on the replaced part, plus our no-fix-no-pay guarantee.
The Galaxy S21 has a plastic back — can you still repair it?
Yes. The S21's polycarbonate back panel is adhesive-mounted and we replace it just like a glass back, often at lower cost.
Professional Samsung Galaxy S21 repair guide
Professional Galaxy S21 Repair Guide
The Galaxy S21 opens from the rear (plastic) cover. The polycarbonate back is more forgiving to remove than glass, but the AMOLED display still requires care.
Common Galaxy S21 Hardware Problems
- Cracked AMOLED display
- Battery degradation (ageing units)
- Scratched/cracked plastic rear cover
- USB-C charging failure
- Camera faults
- Earpiece/loudspeaker distortion
- Water damage
Tools Required
Phillips screwdrivers, plastic picks and opening tools, suction cup, controlled heat, tweezers, SIM tool. Workshop: hot-air station, isopropyl alcohol, display/back-cover adhesive.
Safety First
Power off, discharge below 25%, remove the SIM tray, ESD protection. Use even, controlled heat on the AMOLED.
Opening the Galaxy S21
- Heat the rear cover to soften adhesive.
- Lift the plastic back with a suction cup and pick around the edges.
- Disconnect the wireless-charging/NFC flex.
- Remove shields and disconnect the battery first.
Display Replacement
The AMOLED + digitizer is a fused, frame-bonded assembly; most repairs use a display-with-frame service part. Seat with fresh adhesive and verify touch and 120Hz.
Battery Replacement
Disconnect the battery connector and release the adhesive (pull-tabs or isopropyl alcohol). On ageing units check for swelling. Fit the replacement without bending and re-seal.
Charging Port (USB-C) Repair
The USB-C port is on a lower daughterboard. Clean first; replace the sub-board if charging fails. Test charging and mics afterward.
Rear Cover Replacement
The polycarbonate back is adhesive-mounted — heated, lifted and re-adhered, protecting the camera deco and wireless coil. Cheaper and less brittle than glass-back repairs.
Water Damage
Power off, don’t charge, act fast. Open, disconnect the battery, ultrasonically clean the board.
Repairability Summary
- Easy: plastic rear cover, battery, USB-C sub-board, loudspeaker
- Moderate: AMOLED display (frame-bonded)
- Advanced (lab only): motherboard repair
Most Replaced Galaxy S21 Parts
AMOLED display assembly, battery, plastic rear cover, USB-C sub-board, rear camera, loudspeaker.
Post-Repair Testing Checklist
Touch and 120Hz, fingerprint, cameras, charging, wireless charging, speaker, microphone, Wi-Fi, Bluetooth, SIM.
Last updated June 2026.
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