Getting Started Reference Hardware Firmware Scaling Tools Support & Troubleshooting
Reference
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Bluetooth LE
 
Sleep
 
Versions and upgrades
 
Release notes
 
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Search
 
Pin Info
 
256K user binaries
 
File System
 
EEPROM
 
Real-time clocks
 
Power Management FAQ
 
Wi-Fi setup options
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Cloud API reference
 
Particle API JS (Javascript SDK)
 
Access tokens
 
Authentication
 
Webhook reference
 
Calling API from Web Page
 
node.js getting started
 
Node-RED
 
Data Report Tutorial
Cellular
 
Cellular carriers
 
Verizon FAQ
 
LTE Cat 1 Expansion
 
Particle SIM cards
Tracker
 
Tracker configuration
 
Location fusion
 
Tracker sleep
 
Geofencing
 
CAN bus
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Command Line Interface (CLI)
 
Programming devices
 
Using SWD/JTAG
Datasheets
 
Tracker
 
Tracker SoM datasheet
 
Tracker SoM Evaluation Board
 
Tracker One
 
Monitor One Datasheet
 
Tracker M Datasheet
 
M8 Accessories
 
M8 Temperature/Humidity
 
B Series/Boron
 
B Series B404X datasheet
 
B Series B404/B402 datasheet
 
B Series B524/B523 datasheet
 
B Series Evaluation Board
 
Boron BRN404X datasheet
 
Boron datasheet
 
E Series/Electron
 
E404X datasheet
 
E Series datasheet
 
E Series Evaluation Board
 
E Series System Integration Manual
 
Electron datasheet
 
Wi Fi
 
P2 datasheet
 
Photon 2 datasheet
 
Argon datasheet
 
Photon datasheet
 
P1 datasheet
 
Accessories
 
Gen 3 Accessories
 
Edge ML kit
 
Legacy Accessories
 
Debugger
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Product Lifecycle Stages
 
Product Lifecycle Policy Status
 
Supply Secure FAQ
 
Long Term Support (LTS) Releases
 
Notices
 
Product deprecation notice - March 16, 2022
Technical Advisory Notices
 
Technical advisory notices
 
TAN001 - SARA-R410M "124-day"
 
TAN002 - Tracker One v1.0 Shipping Mode
 
TAN003 - B402 RF Circuit Component
 
TAN004 - Power-off Recommendations for SARA R410M-Equipped Devices
 
TAN005 - SARA-R410-02B-03
 
TAN006 - Tracker SoM GNSS Interface
 
TAN007 - SARA-R410M-02B-03 OTA Upgrade Issue
 
TAN008 - B404 Manufacturing Firmware 2.3.0
 
TAN009 - SARA-R410 Intermittent Increased Connection Time
 
TAN010 - SARA-R410 SIM Initialization
 
TAN011 - Tracker SoM default application firmware issue
 
TAN012 - Rare connectivity issue with BRN404X, B404X, and E404X
 
TAN013 - Tracker Manufacturing Firmware 3.3.0
Errata
 
Tracker system errata
Mobile SDKs
 
iOS SDK
 
Android SDK
Discontinued
 
Cellular
 
US 2G/3G Sunset
 
Gen 2 cellular deprecation
 
R410 modem deprecation
 
Hardware
 
Mesh Deprecation
 
Xenon datasheet
 
Xenon with the Nordic SDK
 
Core datasheet
 
Core shields and kits
 
Leak Detection Kit
 
Internet Button
 
Software
 
Desktop IDE (Dev)
 
Windows SDK
 
Device OS API - Mesh
 
Device OS API - Xenon
 
Device OS API - Core

Cellular

unlock()

Cellular.unlock, unlock

Unlocks the Cellular mutex. See lock().