# ShieldGPS > Setup guides, feature documentation, and support for ShieldGPS trackers and apps. ## Docs - [ShieldGPS documentation](https://docs.shieldgps.com/introduction.md): Set up your ShieldGPS tracker, learn the platform, and troubleshoot common issues. - [Activate Your ShieldGPS Tracker: A Step-by-Step Guide](https://docs.shieldgps.com/getting-started/activate-your-tracker.md): Link your ShieldGPS device to your account and start your subscription in minutes using the IMEI number found on your device packaging. - [Download the ShieldGPS App for iOS, Android or Web](https://docs.shieldgps.com/getting-started/download-the-app.md): Access your ShieldGPS trackers from iOS, Android, or the web dashboard — live maps, route history, and real-time alerts all in one place. - [ShieldGPS Subscription Plans — What You Need to Know](https://docs.shieldgps.com/getting-started/subscription-plans.md): Every ShieldGPS device needs an active subscription to transmit location data. Learn what's included, how to manage plans, and our refund policy. - [G1C Mini GPS Car Tracker — Setup & Installation Guide](https://docs.shieldgps.com/devices/g1c.md): Set up your G1C mini GPS tracker for cars, vehicles, and motorbikes. Compact and discreet, with step-by-step wiring and app connection instructions. - [VO1 OBD GPS Tracker — Setup & Installation Guide](https://docs.shieldgps.com/devices/vo1.md): Set up your VO1 4G OBD GPS tracker. No wiring or tools needed — plug it into your vehicle's OBD-II port and start tracking in minutes. - [AT2 Portable 4G GPS Tracker — Setup & Usage Guide](https://docs.shieldgps.com/devices/at2.md): Set up your AT2 portable 4G GPS tracker. Magnetic mount attaches to any metal surface in seconds — no wiring, no tools, fully rechargeable. - [FMT100 Hard-Wired GPS Tracker — Setup & Install Guide](https://docs.shieldgps.com/devices/fmt100.md): Install and activate your FMT100 hard-wired 12V GPS tracker. Always-on covert tracking with permanent 12V wiring — no charging ever required. - [OB22 OBD GPS Tracker — Setup & Install Guide](https://docs.shieldgps.com/devices/ob22.md): Set up your OB22 hidden OBD GPS tracker for cars. Plugs discreetly into your OBD-II port — no wiring, instant power, covert design for UK and EU. - [AT1 Portable GPS Tracker — Setup & Usage Guide](https://docs.shieldgps.com/devices/at1.md): Set up your AT1 rechargeable portable GPS tracker. Strong magnetic mount, multiple battery modes, and flexible placement — no wiring required. - [Live GPS Tracking: See Your Tracker's Location Now](https://docs.shieldgps.com/features/live-tracking.md): ShieldGPS updates your tracker's location every few seconds (frequency depends on your device's plan), accurate to a few metres, so you always know exactly where your asset is. - [Route History & Playback: Review All Past Journeys](https://docs.shieldgps.com/features/route-history.md): Replay any journey your tracker has made, review trip details, and track cumulative mileage — all from the ShieldGPS app or web dashboard. - [Geofences: Alerts When Your Tracker Enters or Exits](https://docs.shieldgps.com/features/geofences.md): Draw a virtual boundary on the map and receive instant alerts whenever your ShieldGPS tracker enters or exits the zone you define. - [Smart Alerts: Real-Time Notifications for Key Events](https://docs.shieldgps.com/features/smart-alerts.md): Configure real-time push notifications for movement, geofence crossings, speed, trip start and end — so you never miss an important event. - [Driver Behaviour: Monitor Safe and Efficient Driving](https://docs.shieldgps.com/features/driver-behaviour.md): ShieldGPS detects speeding, harsh braking, and harsh acceleration so you can coach safer driving, cut fuel costs, and reduce insurance risk. - [Manage Multiple ShieldGPS Trackers From One Account](https://docs.shieldgps.com/features/multiple-devices.md): Add unlimited ShieldGPS trackers to one account, view them all on a single map, and manage your fleet's subscriptions from one place. - [ShieldGPS Subscription Plans: Features and Pricing](https://docs.shieldgps.com/faq/subscription-plans.md): Learn how ShieldGPS subscription plans work, what features are included, how to purchase a plan, and how to change your subscription at any time. - [ShieldGPS Billing: Update Payments and Manage Plans](https://docs.shieldgps.com/faq/billing-and-payments.md): Update your ShieldGPS payment details, understand your billing cycle, handle failed payments, and resolve any billing issues with our support team. - [How to Cancel or Reactivate a ShieldGPS Subscription](https://docs.shieldgps.com/faq/cancel-or-reactivate.md): Cancel or reactivate your ShieldGPS subscription at any time by contacting support — learn what to expect and how to request a refund. - [Troubleshoot Your ShieldGPS Tracker When It Is Offline](https://docs.shieldgps.com/faq/tracker-offline.md): If the ShieldGPS app shows your tracker as offline, use this guide to identify the most common causes and get back online quickly. - [Tracker Activated but Location Not Showing in the App](https://docs.shieldgps.com/faq/location-not-showing.md): After activating your ShieldGPS tracker, the device should appear on the map. Follow these steps if no location is displayed in the app. - [How to Find Your ShieldGPS Device IMEI Number Fast](https://docs.shieldgps.com/faq/imei-number.md): Your ShieldGPS IMEI is a unique 15-digit identifier needed for activation, support, and subscription management. Here's where to find it. - [GPS Accuracy and Network Coverage for ShieldGPS Devices](https://docs.shieldgps.com/faq/accuracy-and-coverage.md): Learn how accurate ShieldGPS tracking is, what affects location precision, and how cellular network coverage works for your device. - [ShieldGPS Tracker SIM Cards: Everything You Need to Know](https://docs.shieldgps.com/faq/sim-cards.md): ShieldGPS devices have a built-in 4G LTE SIM managed for you. No separate SIM or data plan needed — connectivity is included in your subscription. - [Managing Multiple ShieldGPS Trackers in One Account](https://docs.shieldgps.com/faq/multiple-trackers.md): Manage as many ShieldGPS trackers as you need from one account. Perfect for families, fleets, and businesses tracking multiple vehicles or assets. - [ShieldGPS Route History: Frequently Asked Questions](https://docs.shieldgps.com/faq/route-history.md): Answers to the most common questions about ShieldGPS route history — what's recorded, how long data is kept, missing trips, mileage, and data export. - [Using Smart Lock for Instant Anti-Theft Protection](https://docs.shieldgps.com/faq/smart-lock.md): Smart Lock creates a one-tap geofence at your tracker's position. Any movement triggers an immediate alert — ideal for parking in unfamiliar areas. ## Optional - [ShieldGPS Home](https://www.shieldgps.com)