Samsung Galaxy S21 Ultra specifications
The Samsung Galaxy S21 Ultra (models SM-G998B / SM-G9980) launched in January 2021 as Samsung’s flagship, shipping in India with the Exynos 2100. It pairs a 6.8-inch curved QHD+ AMOLED with a 108MP main camera and dual telephoto lenses, and was the first S-series to support the S Pen (sold separately).
Body & Build
Dimensions are 165.1 × 75.6 × 8.9 mm at 227 g. Aluminium frame with Gorilla Glass Victus front and back, IP68 rated. The curved display adds difficulty to screen replacement.
Display
6.8-inch Dynamic AMOLED 2X at 1440 × 3200 (QHD+), 10–120Hz adaptive, HDR10+, up to 1500 nits peak, curved edges.
Platform
Exynos 2100 (5nm, India) with 12–16GB RAM. Storage: 128GB to 512GB. Shipped with Android 11 / One UI 3.1.
Cameras
Quad rear — 108MP main (f/1.8, OIS), 10MP telephoto (3× optical), 10MP periscope telephoto (10× optical), 12MP ultrawide. 40MP front camera. 8K video.
Battery & Charging
5000mAh 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 6E, Bluetooth 5.0, NFC, GPS. Ultrasonic in-display fingerprint, S Pen support, full sensor suite.
Samsung Galaxy S21 Ultra repair pricing
Transparent rates. Pay only after the repair works.
| Repair | From |
|---|---|
| Display replacement (full assembly) | ₹10,999 |
| Display — OLED-grade original | ₹16,999 |
| Glass only (front) | ₹4,299 |
| Battery replacement | ₹2,899 |
| Charging port repair | ₹1,799 |
| Speaker repair | ₹1,699 |
| Microphone repair | ₹1,699 |
| Button repair | ₹1,599 |
| Back glass replacement | ₹3,999 |
| Data recovery | ₹1,499 |
| Motherboard repair | ₹3,299 |
| Camera repair | ₹2,499 |
| Camera glass replacement | ₹1,199 |
| Water damage treatment | ₹1,599 |
| Wi-Fi / network repair | ₹1,899 |
| 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 Ultra
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 Ultra repairs — screen, battery, charging port — are completed on-site the same day.
6-month warranty
Every Samsung Galaxy S21 Ultra repair includes a 6-month warranty on parts and labour. No fix, no pay.
Samsung Galaxy S21 Ultra repair — frequently asked questions
How much does Samsung Galaxy S21 Ultra screen replacement cost in Bangalore?
Galaxy S21 Ultra AMOLED display replacement starts at ₹10,999, 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 Ultra repairs?
Yes. Every Galaxy S21 Ultra repair includes our free XCare+ warranty for up to 6 months on the replaced part, plus our no-fix-no-pay guarantee.
How long does a Galaxy S21 Ultra repair take?
Most repairs — screen, battery, charging port — are completed the same day, with free doorstep pickup and drop across Bangalore.
Professional Samsung Galaxy S21 Ultra repair guide
Professional Galaxy S21 Ultra Repair Guide
The S21 Ultra opens from the rear glass. The curved AMOLED and dual-telephoto camera island call for careful work.
Common Galaxy S21 Ultra Hardware Problems
- Cracked curved AMOLED display
- Battery degradation (ageing units)
- Cracked rear glass
- USB-C charging failure
- 108MP / periscope 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. The curved AMOLED is fragile — use even, controlled heat.
Opening the Galaxy S21 Ultra
- Heat the rear glass to soften adhesive.
- Lift the back cover 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 curved 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 sits on a lower daughterboard. Clean first; replace the sub-board if charging fails. Test charging and mics afterward.
Rear Glass Replacement
The Victus rear is adhesive-mounted — heated, lifted and re-adhered, protecting the large camera island and wireless coil.
Water Damage
Power off, don’t charge, act fast. Open, disconnect the battery, ultrasonically clean the board.
Repairability Summary
- Easy: battery, USB-C sub-board, loudspeaker
- Moderate: rear glass
- Advanced (lab only): curved AMOLED, periscope camera, motherboard repair
Most Replaced Galaxy S21 Ultra Parts
AMOLED display assembly, battery, rear glass, USB-C sub-board, 108MP/periscope cameras, loudspeaker.
Post-Repair Testing Checklist
Touch and 120Hz, fingerprint, all rear cameras, front camera, charging, wireless charging, speaker, microphone, Wi-Fi, Bluetooth, SIM.
Last updated June 2026.
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