# Troubleshooting Guide *** {% hint style="info" %} Follow the [general troubleshooting steps](#general-troubleshooting-steps) first when you encounter any problems. {% endhint %} This page describes typical problems encountered while using the app with a drone and helps you understand the cause and how to remedy the situation. *** ## General Troubleshooting Steps If you have issues with the app or drone, follow these steps first. {% hint style="info" %} Sentera provides these steps to help fix common problems. Always proceed with caution when performing these steps. **Procedures such as System Software or Firmware updates can be irreversible.** {% endhint %} ### No Fly Zone Check if your drone is in or near a [No Fly Zone](/home/fieldagent-mobile-ios/faqs.md#unlock-no-fly-zones-for-dji-products). If you are on the edge of an NFZ, the drone can stop mid-mission to prevent it from entering restricted airspace. ### App Was Backgrounded Keep the app in the [foreground](/home/fieldagent-mobile-ios/faqs.md#the-app-must-be-in-the-foreground-why) while operating the drone. ### DJI GO 4 Force quit [DJI GO 4.](/home/fieldagent-mobile-ios/faqs.md#can-i-keep-dji-go-4-running) ### Apple Mobile Device Reboot your device. Mobile devices that connect to DJI Remote Controllers can become unstable over time, and rebooting often fixes these issues. * [iPhone](https://support.apple.com/en-us/118259) and [iPad](https://support.apple.com/en-us/101603) have different procedures for rebooting. * Rebooting can fix an issue where you cannot send support emails from the app. * Reboot your mobile device every morning as part of your daily routine. Out-of-date system software can cause many types of issues. * Check for any [software updates](https://support.apple.com/en-us/118575) and install them. * Always keep [FieldAgent Mobile](/home/fieldagent-mobile-ios/fieldagent-mobile-ios.md) up-to-date. Check your Lightning or USB-C port for debris or unexpected wear. * Your port can wear out over time due to too many cable insertions. If you detect excessive wear and tear, have your mobile device [serviced](https://support.apple.com/repair). * Follow Apple's suggestions for cleaning [here](https://support.apple.com/en-gw/103258). * **Do not attempt to clean the port yourself.** Inspect your cables. * Damaged cables should be replaced. * Non-Apple cables often fail to work correctly with the Drone's RC and your mobile device. ### DJI Drone Check that you have the latest firmware. * Review DJI's website for the [latest firmware](https://www.dji.com/downloads). RTK mode is not supported by FieldAgent mobile. * Matrice Series drones must have [RTK mode](/home/fieldagent-mobile-ios/requirements/dji-drones.md#rtk-support) disabled. * The app cannot upload or execute autonomous missions when RTK is enabled. Perform drone maintenance and calibration on a schedule. * Perform any missed maintenance procedures before continuing to use the drone. * Check to see if your drone needs calibration. * [Compass](https://repair.dji.com/help/content?customId=en-us03400006765\&spaceId=34\&re=US\&lang=en\&documentType=artical\&paperDocType=paper) * [IMU](https://repair.dji.com/help/content?customId=en-us03400006763\&spaceId=34\&re=US\&lang=en\&documentType=artical\&paperDocType=paper) * [Gimbal](https://repair.dji.com/help/content?customId=en-us03400006819\&spaceId=34\&re=US\&lang=en\&documentType=artical\&paperDocType=paper) * [Aircraft Vision System](https://repair.dji.com/help/content?customId=en-us03400006473\&spaceId=34\&re=US\&lang=en\&documentType=artical\&paperDocType=paper) Inspect your drone for any damage to the aircraft or the [batteries](https://forum.dji.com/thread-279700-1-1.html). * Have your drone [serviced](https://www.dji.com/support/repair) if necessary. * If your batteries are damaged, then do not fly with them. Always deploy your drone in a good takeoff area. * Taking off too close to an object, such as a picnic table or car, can cause issues with the Vision System. * You should never attempt to take off near metal or on rebar-reinforced concrete. Always maintain Line of Sight (LoS) with your remote controller (RC) and the drone. * Crops are an attenuator. Obstructing the LoS of the RC and drone can cause communications to become unstable and fail. * Human bodies are also massive attenuators. Do not put your body between the drone's and the RC's line of sight. {% hint style="info" %} If you need additional help with your DJI Drone, please check the [Official DJI Help Center](https://repair.dji.com/help/search?lang=en\&re=US\&limit=9\&page=1\&spaceId=34\&trackId=9695fcaf-2da5-4507-83d8-ebaa81294c7c\&keyword=\&folderIdList=0\&defaultOpened=,34). {% endhint %} *** ### Drone Firmware Some versions of DJI's firmware have bugs that cause the drone to pause while taking off or flying a mission. Check to see if you have the [latest firmware](https://www.dji.com/downloads). ### Obstacle Avoidance The obstacle avoidance system can be triggered during take-off or a flight for unexpected reasons. * Ensure you are on flat ground away from objects like a picnic table or car. * Cleaning your drone as part of a maintenance schedule is essential for its health and safety. This will keep the sensors free of debris that can cause them to become confused. ### Remote Controller Flight Mode Drones with [Support for Mission Execution](/home/fieldagent-mobile-ios/requirements/dji-drones.md#support-for-mission-execution) must have their RC set to the correct Flight Mode.
F ModeP Mode
Phantom 3 SeriesPhantom 4 Series
Matrice 100Inspire 2
OmniMavic 2 Pro
Inspire 1M200/M210/M210RTK

M300
*** ## Skipped Photos * For DJI cameras see this [page](/home/fieldagent-mobile-ios/troubleshooting-guide/dji-camera.md). * For Sentera cameras see this [page](/home/fieldagent-mobile-ios/troubleshooting-guide/sentera-camera.md). *** ## Additional Resources You can view the following pages for more more information on specific problems. * [DJI Drone](/home/fieldagent-mobile-ios/troubleshooting-guide/dji-drone.md) * [Flight Interruptions](/home/fieldagent-mobile-ios/troubleshooting-guide/flight-interruptions.md) * [DJI Camera](/home/fieldagent-mobile-ios/troubleshooting-guide/dji-camera.md) * [Sentera Camera](/home/fieldagent-mobile-ios/troubleshooting-guide/sentera-camera.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://support.senterasensors.com/home/fieldagent-mobile-ios/troubleshooting-guide.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.