Samsung Ends Software Updates for Galaxy Watch4 Series

On September 10, 2026, Samsung Electronics officially concluded all software maintenance and security patch distribution for the Galaxy Watch4 and Galaxy Watch4 Classic. First launched in August 2021 with European retail prices starting at 269 euros for the 40mm aluminum variant and 369 euros for the 42mm stainless steel Classic edition, the product line marked Samsung's shift to the unified Wear OS 3 operating system alongside its 5-nanometer Exynos W920 processor. Samsung had committed to regular platform and security maintenance for the lineup, but with the arrival of its fifth operational anniversary, both the Bluetooth and LTE models have reached formal end-of-life status. Consequently, these devices will receive no further operating system upgrades, functional feature additions, or security patches for newly discovered vulnerabilities.

Operational and Security Impacts for European Users

For owners in Slovenia and the broader European Union, the end of firmware support changes the operational profile of the watch. Core native utilities, including local step counting, optical heart rate measurement, electrocardiogram (ECG) recording, bioelectrical impedance analysis (BIA), and offline exercise tracking, continue to function without interruption. The hardware does not stop operating simply because updates have ceased.

However, security considerations become more prominent over time. Smartwatches maintain constant wireless synchronisation with host smartphones over Bluetooth and Wi-Fi, often storing sensitive fitness records, location history, and communication logs. The absence of kernel patches means unmitigated security vulnerabilities could expose connected devices to local network exploits. While digital payment services like Google Wallet and syncing through Samsung Health remain active today, third-party developers regularly deprecate older Wear OS application programming interface (API) targets. Over the coming years, banking and digital identity platforms operating under strict European regulatory standards may restrict access on firmware builds that no longer receive certified security updates.

Hardware Durability and the Battery Servicing Equation

From a structural engineering perspective, the Galaxy Watch4 family remains reliable. The devices feature durable chassis materials, Corning Gorilla Glass DX+ crystal protection, and an IP68 and 5ATM water-resistance rating. As a result, many units remain in good cosmetic and mechanical condition.

The most common point of technical degradation is the chemical battery cell. The original lithium-ion cells, sized at 247 mAh in smaller 40mm and 42mm casings and 361 mAh in larger 44mm and 46mm chassis, inevitably experience reduced capacity after five years of daily charging cycles. Users must therefore decide whether replacing degraded physical components is economically practical given the static software environment.

Professional repair facilities, including KRON IT with ISO 9001 and ISO 14001 certified service centres in Ljubljana and Maribor, continue to support the Galaxy Watch4 series. Such centres maintain access to original equipment manufacturer (OEM) replacement components, provide comprehensive diagnostic evaluations for 25 euros including VAT, and issue a 12-month warranty on labour. For users outside the main metropolitan areas, mail-in repair services with free loaner devices permit hardware restoration without service interruptions, provided the client is comfortable continuing with an unsupported operating system.

Practical Guidance for Device Owners

Owners of the Galaxy Watch4 series should assess their specific use cases before deciding whether to replace or maintain their devices:

• Basic fitness and utility tracking: Users who deploy the watch primarily for step counts, sleep tracking, and basic notification forwarding can safely keep the device in service. In these scenarios, a battery replacement offers a cost-effective, environmentally conscious way to extend the product's useful life.
• Sensitive transactions and high-security workflows: Users who frequently make contactless payments via NFC, store corporate credentials, or use their watch as a secondary authentication token should plan a transition to newer, actively supported hardware such as the Galaxy Watch7 or Watch Ultra, where current security definitions are maintained.
• Precautionary security settings: Owners retaining the watch should lower potential attack vectors by disabling automatic Wi-Fi connections to public networks, auditing connected third-party applications, and unlinking unneeded payment cards.
• Responsible recycling: If a unit suffers severe display damage or mainboard failure that exceeds the economic value of a repair, it should be deposited at an authorized electrical waste collection centre rather than domestic refuse, ensuring hazardous materials are safely managed and metals are reclaimed.

Sources

• gsmarena.com
• techradar.com