If your Samsung Galaxy S21 Ultra has a cracked, unresponsive, or discoloured screen, you're not alone — this is still one of the most searched repairs for the model, even years after its January 2021 launch. The S21 Ultra was Samsung's flagship for that generation, built around a 6.8-inch Dynamic AMOLED 2X display with a 120Hz adaptive refresh rate, and it was the first Ultra model to support S Pen input via an optional accessory rather than a built-in slot. That premium display is also expensive and delicate to replace, so this guide walks through UK pricing, a genuine in-stock part, the DIY process, and — because this phone is now several years old — an honest look at whether repairing it still makes financial sense in 2026.
The Repair Plus stocks a genuine replacement OLED screen with frame for the Galaxy S21 Ultra, ready to ship across the UK.
Shop Samsung S21 Ultra Screen | The Repair PlusDisplay Specifications
- 6.8-inch Dynamic AMOLED 2X display
- Quad HD+ resolution with adaptive 120Hz refresh rate
- Snapdragon 888 or Exynos 2100 chipset, depending on region
- Gorilla Glass Victus front cover glass
- Supports S Pen input via an optional, separately sold S Pen accessory (no built-in silo on this model)
- Curved-edge display design integrated with the frame/mid-frame assembly
Is It Still Worth Repairing an S21 Ultra in 2026?
The S21 Ultra launched in January 2021, which makes it a five-year-old flagship at this point. That doesn't mean it's obsolete — the hardware, particularly the display and camera system, was genuinely high-end for its time, and Samsung's One UI updates have kept it usable for everyday tasks, calls, messaging, and most apps. Whether a screen repair is worth it comes down to a straightforward comparison.
A genuine OLED screen replacement from The Repair Plus costs £108.99. Against that, you're weighing the cost of a replacement device. A used or refurbished S21 Ultra in good condition, or a budget mid-range phone with comparable everyday performance, will typically cost considerably more than the price of this screen (estimate — check current second-hand market prices before deciding). If the rest of your phone — battery health, charging port, cameras, buttons — is still in good working order, a screen replacement is usually the more economical choice. If your device is also suffering from significant battery degradation, a failing charging port, or software support concerns, it's worth weighing those combined costs against a device upgrade before committing to the repair.
In short: for a phone that's otherwise healthy, replacing a cracked or faulty screen on an S21 Ultra remains a sensible, cost-effective repair in 2026, not a case of throwing good money after old hardware.
Samsung Galaxy S21 Ultra Screen Replacement Cost Comparison
| Repair Option | Price (UK) | Pros | Cons |
|---|---|---|---|
| DIY with genuine part (The Repair Plus) | £108.99 (part only) | Lowest total cost; genuine OLED with frame; full control over timing | Requires tools, care, and confidence with disassembly; no labour warranty unless self-performed correctly |
| Independent repair shop | Typically £120-£180 (estimate) | Fast turnaround; no DIY risk; often same-day | Part quality varies by shop; price includes labour markup |
| Samsung/manufacturer repair | Typically £200-£300+ (estimate) | Official parts and workmanship; may preserve warranty status | Highest cost; longer turnaround; may not be cost-effective on an older device |
How Do You Replace a Samsung Galaxy S21 Ultra Screen Yourself?
This is an advanced repair involving adhesive removal, delicate ribbon cables, and a curved-edge display. Take your time, work on a clean static-safe surface, and don't rush the adhesive or cable steps.
- Power off the device fully and remove the SIM tray.
- Apply gentle heat around the screen edges to soften the factory adhesive.
- Use a suction cup and pick tools to carefully lift the screen from one corner, working slowly around the edge to avoid cracking the panel further or damaging the frame.
- Once the screen is loosened, disconnect the display and battery ribbon cables from the motherboard before fully removing the old screen assembly.
- Remove any small components (earpiece speaker, sensors, brackets) that need transferring to the new screen, depending on whether your replacement includes the frame.
- Position the new OLED screen with frame, reconnect the display ribbon cable first, then the battery connector.
- Power the device on briefly before sealing to confirm the new screen displays correctly and touch input works across the full panel.
- Apply fresh adhesive strips or approved adhesive around the frame.
- Carefully press the new screen assembly into place, working from one edge across to the other to avoid trapping air or misaligning the curved edges.
- Reinsert the SIM tray, power on fully, and test the display, touch response, S Pen input (if used), and speaker/earpiece function.
Frequently Asked Questions
How much does it cost to replace a Samsung Galaxy S21 Ultra screen in the UK?
A genuine OLED screen with frame from The Repair Plus costs £108.99. Independent repair shops typically charge more once labour is included, and manufacturer repairs are usually the most expensive option (estimates — see the cost comparison table above).
Can I replace the S21 Ultra screen myself?
Yes, but it's an advanced-level repair due to the curved-edge display, adhesive removal, and delicate ribbon cable connections. If you're not confident working with small components and heat tools, an independent repair shop is a safer option.
Is the Samsung Galaxy S21 Ultra still worth repairing in 2026?
If the rest of the phone is functioning well — battery, charging port, cameras — repairing the screen is usually more cost-effective than replacing the whole device. It's worth reviewing overall device condition first, since combined repair costs may change that calculation.
Does the replacement screen include the frame?
Yes. The Repair Plus screen listed in this guide is a complete OLED display with frame, which simplifies fitting compared to a screen-only part.
Will replacing the screen affect S Pen support?
No. S Pen input on the S21 Ultra works via Bluetooth/digitiser support built into the phone rather than a dedicated slot, so a correctly fitted genuine screen replacement should not affect S Pen functionality.
What tools do I need for a DIY screen replacement?
You'll typically need a heat source (heat gun or heating pad), a suction cup, plastic pick tools, a precision screwdriver set, and fresh screen adhesive. Anti-static precautions are recommended.
How long does the repair take?
For an experienced DIYer, budget around 45-90 minutes. First-timers should allow longer and work carefully, particularly around adhesive removal and cable reconnection.
Ready to fix your screen with a genuine part?
Shop Samsung S21 Ultra Screen | The Repair Plus