For Samsung Galaxy S21 Ultra G998 Replacement Antenna Connection Cable
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Discount applies at checkout on any mix of parts — ideal for repair shops.
Estimated delivery · Royal Mail Tracked 482–3 working days
- Order placedToday
- DispatchedSame day
- At your door2–3 days
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Phone parts are delicate. We recommend fitting by a qualified repair technician — damage caused during fitting is not a product fault. Need help choosing the right part? Call 07425 443625 or email info@therepairplus.com (Mon–Fri 10:00–18:00). Repair shop? Open a trade account.
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The Repair Plus antenna connection cable for Samsung Galaxy S21 Ultra (G998) is a brand new replacement signal flex for fixing weak mobile reception, Wi-Fi drops and unstable data after drop damage. Built to OEM standard for the S21 Ultra 5G only and shipped the same day from Manchester when you order before 4pm, Monday to Friday.
Key features
- Fixes common signal faults: weak bars, lost network and Wi-Fi drop-outs caused by a damaged antenna lead.
- Direct fit: matches the routing and connector ends of the Galaxy S21 Ultra G998 cable.
- No soldering: press-fit connectors clip straight onto the board sockets.
- Low-cost repair: a cheap part that can save replacing a whole board or sub-board.
- Checked in the UK: inspected before dispatch from Manchester.
Specifications
| Part | Antenna connection cable / signal flex |
|---|---|
| Compatible model(s) | Samsung Galaxy S21 Ultra 5G (G998) |
| Condition | Brand new |
| Quality | OEM standard |
| Dispatch | Same day before 4pm, Monday to Friday, from Manchester, UK |
| Returns | 30 days |
Compatibility
Made for the Samsung Galaxy S21 Ultra 5G, model G998. It does not fit the Galaxy S21 or Galaxy S21+. To confirm your model, open Settings > About phone and check the model number starts with SM-G998.
Before you order
Signal problems are not always the cable. Try another SIM and reset network settings first. If the phone was dropped or recently opened and signal fell away afterwards, the antenna cable is the most likely cause and a quick part to swap once the back glass is off.
Why buy from The Repair Plus
- Same-day dispatch when you order before 4pm, Monday to Friday.
- UK stock, shipped from Manchester.
- Every part tested before dispatch.
- 30-day returns.
- Trusted by DIY repairers and independent repair shops.
Frequently asked questions
Is this the same cable as the S21+?
No. The Galaxy S21+ uses a different cable. This one is for the S21 Ultra G998 only.
Can a damaged antenna cable affect Wi-Fi?
Yes. A pinched or loose antenna lead can cause weak Wi-Fi as well as poor mobile signal.
Is it hard to replace?
It is a moderate repair. The back glass must come off, but the cable itself just clips in, with no soldering.
Do you ship across the UK?
Yes. Orders before 4pm on weekdays are sent the same day from Manchester.
