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Why Is My Phone Stuck in SOS Mode?

Why does your phone keep going into SOS mode? Learn what SOS Only means, what causes cellular connection problems, and how to restore service on your iPhone.

4 min read

Why Does My Phone Say No SIM Card?

Why does your phone say No SIM? Learn what causes SIM detection errors on iPhone and Android, how to restore your connection, and when to replace your SIM card.

3 min read

How to Set Up Face ID on iPhone the Right Way

Learn how to set up Face ID on iPhone, improve facial recognition, manage security settings, and troubleshoot common setup problems.

3 min read

What to Do If Your Phone Gets Wet (and What to Avoid)

Dropped your phone in water? Learn how to remove moisture safely, protect your charging port and speakers, identify water damage, and avoid common mistakes.

3 min read

How to Tell If Your Phone Has a Virus: Signs and Fixes

Learn how to check if your phone has a virus, recognize common malware symptoms, remove suspicious apps, and protect your Android or iPhone.

1 min read

10 Hidden iPhone Features You Probably Didn’t Know About

Discover 10 useful iPhone hacks, including faster typing, scheduled messages, hidden gestures, document scanning, and shortcuts that make everyday tasks easier.

2 min read

NSYS Group to Attend Circular Summit 2026 in London

NSYS Group will attend Circular Summit 2026 in London on 17 November. Meet our team to discuss device diagnostics, automation, and opportunities in the secondary mobile market.

1 min read

How to Detect Sensor Failures in Used Phones

Learn how to test phone sensors, detect proximity and motion sensor failures, and identify hidden hardware defects in used smartphones before resale.

2 min read

7 Obvious Things About the Used Phone Business That Beginners Often Overlook

Starting a used phone business looks simple until hidden defects, unreliable suppliers, and poor inventory records start eating into profits. Here are seven basics beginners often underestimate.

9 min read

Fingerprint Sensor Not Working? Causes and Fixes

Fingerprint sensor not working? Learn how to troubleshoot fingerprint recognition problems on Android and iPhone, identify possible hardware damage, and determine when professional repair is needed.

4 min read

NSYS Diagnostics Update: Expanded MacBook Testing and Improved Reporting

The October 2026 NSYS Diagnostics update expands MacBook hardware information, improves testing workflows, and enhances certificates, label printing, and reporting

1 min read

Ghost Touch on Smartphones: Causes, Detection, and Testing

Ghost touch can cause smartphones to register inputs without physical contact. Learn what causes it, how to diagnose and fix it, and how refurbishers can identify faulty touchscreens.

11 min read