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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →If a SmartThings device shows as Offline, has a disconnected or incorrect status, or does not respond, first check whether the problem affects one device or several. For one device, start with its power, battery, range, and setup. If several devices fail, check the hub and network before resetting anything. Samsung Support recommends checking hub power, attempting a reset, or following additional troubleshooting steps; the right fix depends on the device and hub.
First determine whether one device or several are affected
Check the SmartThings app and, where available, the device’s own controls or manufacturer app. A single offline sensor points first to that device’s power, battery, range, or pairing. Several devices connected to the same hub going offline make hub status or network conditions more relevant. If local Wi-Fi device discovery is failing across multiple products, investigate the phone, router, and local network rather than treating each device as an isolated fault.
- One device: begin with its power or battery and whether it is within range.
- Several hub-connected devices: inspect the hub’s power and indicator before rebooting it.
- Wi-Fi or LAN devices: check whether the phone and device share the local network and whether other LAN devices are discoverable.
Check the hub without interrupting an update
Confirm the hub is powered and inspect its indicator. Samsung says a flashing or solid magenta LED indicates an update; SmartThings may show the hub as disconnected during this time. Do not unplug or reboot the hub while that indicator is present. If it remains offline after the update, identify the hub model before following reboot instructions.
Restore power to the affected device
Plugged-in devices
Disconnect the device from power for two minutes, then reconnect it. If appropriate, try another outlet and check the device’s indicator for a warning state.
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- Powered by SmartThings: Connect, monitor, and automate your home through the SmartThings app. Build a reliable, unified smart home using Samsung's proven ecosystem
- Matter + Zigbee Smart Home Hub: Supports the newest Matter standard plus Zigbee for lighting, sensors, plugs, switches, thermostats, and more - thousands of compatible devices. PLEASE NOTE: Z-Wave not supported
- Easy Setup with Wi-Fi or Ethernet: Get started in minutes using Wi-Fi or a wired Ethernet connection for apartments, houses, and expanding smart home systems - Z-Wave not supported
- Automations That Work for You: Create custom routines for security, lighting, comfort, and energy savings. Many local automations continue working even if your internet goes offline
- Wide Device Compatibility: Connect compatible smart devices from Aeotec and many other brands to build a unified system for lighting, voice control, energy management, and climate settings
Battery-powered devices
Check that the battery is seated correctly. Remove it for 30 seconds, reinstall it, and replace it if it is still weak or depleted. Battery type depends on the exact device model, so check that model’s documentation rather than guessing a replacement.
Check setup, range, and interference
Some products must first be set up in their manufacturer’s app before SmartThings can connect to them. Confirm that initial setup is complete, then move the device closer to the hub and reduce obstructions as a test. If it reconnects nearby, range is a likely factor. A powered device may act as a repeater in some networks, so removing or relocating one can affect other devices. Consider a compatible repeater only after establishing that range is the problem.
Rank #2
![SmartThings Hub 3rd Generation [GP-U999SJVLGDA] Smart Home Automation Hub Home Monitoring Smart Devices - Alexa Google Home Compatible - Zigbee, Z-Wave, Cloud to Cloud Protocols – White](https://m.media-amazon.com/images/I/21hChu0ounL._SL160_.jpg)
- Monitor and control compatible devices in your home using a single smartphone app for your phone
- Automate connected devices in your home and set them to turn on or off when doors are opened, people come and go, and much more
- Works with a wide range of smartphone compatible products
Samsung’s US troubleshooting guidance also recommends keeping the hub away from the Wi-Fi router and notes possible Wi-Fi/Zigbee channel overlap. It gives Zigbee channels around 14–25 and Wi-Fi channels 1, 6, or 11 as examples, not a universal radio-planning rule. Router and hub capabilities differ, so check their documentation before changing channels.
For Wi-Fi or LAN devices, check the local network
For LAN discovery, verify that the phone and device are on the same local network. Complete setup in the manufacturer’s app if required. Restart the device, SmartThings app, and phone, then try discovery again. If the device has an Ethernet port, Samsung also suggests testing a direct Ethernet connection.
Rank #3
- LOCAL PROCESSING FOR INSTANT RESPONSE: The Hubitat Elevation C-8 Pro runs automations directly on the hub, not on remote servers, so lights, locks, thermostats, and routines keep working even when your internet goes down; this local-first architecture delivers near-instant response to every trigger without relying on remote servers to process commands; compatible with 1,000+ devices across 100+ brands, and device data stays at home for enhanced privacy
- WORKS WITH ALEXA, GOOGLE HOME, AND APPLE HOMEKIT: Connect your preferred voice assistant and start controlling your smart home from day 1; the C-8 Pro is compatible with Amazon Alexa, Google Home, and Apple HomeKit, so your existing ecosystem works alongside the hub without compromise; Ring camera integration adds a concrete layer of security awareness; approachable setup is supported by step-by-step documentation and an active online community ready to guide you through every stage
- MULTI-PROTOCOL SUPPORT WITH EXTENDED RANGE: A single hub covers Matter 1.5, Z-Wave 800 Series with Long Range, Zigbee 3.0, and Bluetooth, so existing devices stay compatible without extra bridges or adapters; 800 Series Z-Wave and Zigbee 3.0 deliver improved reliability and mesh stability, backed by Z-Wave Alliance membership; 2 dedicated external antennas, one for Z-Wave and one for Zigbee, extend wireless reach in larger homes and device-dense environments where signal consistency is critical
- AI-ASSISTED AUTOMATION AND ADVANCED RULE ENGINE: The AI-assisted routine builder suggests and builds automations based on your connected devices, no programming required; Rule Machine enables multi-condition logic across lighting scenes, geofenced arrivals, layered security responses, and whole-home scheduling; when your family arrives after dark, the hub can unlock the door, activate pathway lights, and adjust the thermostat, turning complex sequences into reliable hands-free routines
- NO SUBSCRIPTION REQUIRED AND CONTINUOUS UPDATES: Full platform functionality needs no recurring subscription; every automation, integration, and advanced feature is available from setup; continuous platform updates since 2018 have expanded compatibility without requiring new hardware; an active community of tech-savvy homeowners and DIY smart home builders shares custom apps, drivers, and automation blueprints for ongoing value; compact at 3.23 x 2.95 x 0.67 in and just 0.16 lb, it fits anywhere
Check whether other LAN devices work in SmartThings. If several cannot be discovered, investigate the app and router conditions before troubleshooting each product separately. Rebooting a router can temporarily disconnect other devices using it.
If the Wi-Fi network name or password changed, Samsung notes that the hub and connected devices may need updated network details. The process varies by device; some products may require resetting and reconnecting.
Rank #4
- Multi-Protocol Smart Hub with Matter Bridge – The M100 is a versatile smart hub compatible with Thread devices and Aqara Zigbee (** Not third-party Zigbee devices), supporting up to 20 Aqara Zigbee devices and 20 Thread devices. As a Matter Bridge, it connects Aqara Zigbee products to other smart home ecosystems, compatible with Apple Home, Amazon Alexa, Home Assistant, etc. Note: Use a 5V⎓0.5A power adapter (not included) and keep the product continuously powered during use.
- Advanced Matter Bridging for Seamless Smart Home Integration – The M100 enables Aqara’s unique features, such as facial recognition and complex automation, to work across Home Assistant and other Matter ecosystems. Expand your smart home with Aqara or third-party Matter devices (requires a Matter-enabled hub). Currently supports lights, thermostats, plugs, switches, buttons, and various sensors (motion, light, door/window, temperature/humidity), with more devices to be added in the future.
- Local Automation for Reliable Performance – Supports local execution of automations for Zigbee and Matter devices, ensuring smooth operation even without Wi-Fi or cloud access. Enjoy millisecond-level response times for a more stable and reliable smart home experience. (Some automation, such as cloud push notification, will still require the cloud connection to be executed.)
- Flexible Power & Small Size – Features a universal USB-A port for power and data, allowing connection to power banks, wall outlets, PCs, or routers for a simple and quick setup. The Hub M100's shaft can be adjusted within a 210-degree range, making its placement extremely flexible.
- 2.4GHz Wi-Fi 6 for Faster & Security—This product supports a 2.4GHz Wi-Fi 6 wireless network connection, which enables more efficient connections with advanced WPA3 security. Wi-Fi 6 ensures smoother performance even in high-traffic environments, allowing multiple devices to connect without compromising speed or reliability. Note: To ensure a stable connection, place the Hub M100 between 6 to 19 feet from the router.
Update or re-add only the affected device
Check SmartThings and the device’s native app for available software updates. If power, range, setup, and network checks do not resolve the problem, remove and add the individual device again using its model-specific instructions. Hub-connected devices may need to be reset or excluded from the hub and placed in pairing mode. A Bluetooth device may also need to be unpaired from the phone’s Bluetooth settings before pairing again.
For a third-party product, first see whether it works in its manufacturer’s app. If it does, Samsung advises that some linked services can be removed from SmartThings and re-added. Other products need device-specific power, range, reset, or re-add steps. Contact the manufacturer if the issue also occurs in its app.
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A hub reboot turns it off and on to refresh it without removing connected devices or settings. Samsung Canada’s instructions vary by SmartThings Hub v1, v2, and v3, and by SmartThings Wi-Fi product. Identify your model and follow the current instructions for it rather than applying a generic button sequence.
Reserve factory reset for persistent hub-wide failures
A factory reset restores defaults and can remove data and device connections, unlike a reboot. The procedure depends on the hub model. On some firmware versions, setup again may require clearing devices, automations, scenes, and locations first. Treat it as a last resort after simpler checks and a model-specific reboot, and consult current Samsung instructions before proceeding.
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