USAMS US-SJ448 U55 Aluminum Alloy Braided Charging / Data Cable

At Tech Lab, we offer a professional diagnostic service to identify any hardware or software issues in your device. Our expert technicians carry out a full inspection, testing key components including:

• Battery
• Charging port
• Display/screen
• Power and volume buttons
• Cameras
• Logic board and internal circuits

Whether it’s a smartphone, tablet, MacBook, laptop, or game console, we help you understand the exact cause of the issue.

When do you need a diagnostic?

• Your device won’t turn on or keeps restarting
• You're unsure what part needs fixing
• There are multiple faults at once
• You want an accurate quote before repair
• You're looking for expert help with data recovery or board-level issues

Diagnostic Fee & Policy

Diagnostics are not free. Our time, tools, and experience go into every test. The fee depends on the complexity and time required.

• If you approve the repair, we waive the diagnostic fee.
• If you choose not to proceed, a fee will be charged.
• If the device is non-repairable after our attempt, a minimum charge still applies as a repair attempt fee.

Nationwide Mail-in or Local Walk-in Repairs

Tech Lab offers both walk-in repairs in Worthing and a nationwide mail-in repair service for all major brands including Apple, Samsung, Google, and Huawei.

• ✔ Fast turnaround
• ✔ 90-day warranty
• ✔ Free diagnostic if you proceed with the repair
• ✔ Trusted UK repair specialist

Looking for professional phone repair, tablet repair, or MacBook repair? Send your device to Tech Lab for reliable diagnostics and honest advice.

Start Mail-In Repair

• Accessories and devices can be returned within 14 days if unused and in brand-new condition.

• Opened or used items are not eligible for a refund.

• Return shipping costs are the customer’s responsibility unless the item is faulty.

• For mail-in repair returns, diagnostic and postage fees are non-refundable.

By using our repair service, you agree to the following:

• We use high-quality compatible parts unless otherwise stated

• Completion timeframes are estimates only

• Board-level repairs may take 5 working days or more

• Device passcodes may be needed for full checks

• Devices not collected within 56 days may be recycled

• Any further charges will be discussed before proceeding

• Unpaid repairs after 30 days may lead to forfeiture of the device

• Water-damaged devices carry no guarantee and may worsen upon opening

• Repairs may void your manufacturer’s warranty

• Warranty applies only to the original fault and customer, and excludes accidental or liquid damage

• We do not take responsibility for lost data; always back up your device

• Repair warranty covers only the replaced part and original fault

• Warranty becomes void if third-party repair is performed after ours

• Data may be used to send service updates or promotions (you can unsubscribe anytime)

By using our website, you agree to the following:

• You won’t copy, modify, or share our content without permission

• You agree to follow all UK laws while browsing or using our services

• We may update our terms and policies at any time without prior notice

• We aim to keep all information accurate and helpful, but please use the website at your discretion — some details may change or contain small errors

• We’re not responsible for the content of any external links on our site