> For the complete documentation index, see [llms.txt](https://support.senterasensors.com/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.senterasensors.com/home/fieldagent-mobile-ios/troubleshooting-guide.md). # 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 Out-of-date system software can cause many types of issues.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)