Tesla's Sentry Mode and TeslaCam features are incredibly popular – helping owners capture some crazy things. The biggest limitation to these features is the display of the footage. But iOS 13 and iPadOS 13 make things easier for iPhone and iPad users.
Ideally, Tesla owners can view TeslaCam and Sentry mode videos directly on the screens in the car, but that's not yet possible. In the meantime, Tesla's solution is for owners to plug the flash drive used for Sentry Mode and TeslaCam into their computer to individually review the files.
iOS 13 and iPadOS 13, but add support for external drives in the "Files" app. This means that you can now connect flash drives to your iPhone or iPad to quickly view the files. While this has been allowed for some flash drives, such as the SanDisk iXpand, for some time, it will be available in iOS 1
If you have not set up Sentry Mode and TeslaCam yet, you will need a flash drive. Almost any flash drive can be used. The bigger it is, the more videos can be saved. You will then need to format the flash drive with your computer to FAT32 and create an empty folder named "TeslaCam". I prefer SanDisk Ultra Fit because of the small form factor.
After setting up TeslaCam and Sentry mode After capturing footage, you can verify it with the Files app on iOS 13 and iPad 13.
If you want to view the material with Lightning connectivity on your iPhone or iPad, you need a Lightning to USB port – an adapter. The official Apple adapter is your most reliable bet – but also the most expensive. Other adapters may work and are available at less than half the cost of Apple, but their performance varies.
If you have a 2018 iPad Pro with USB-C, you will need a USB-C to USB-A adapter. These are pretty cheap and most of them are pretty reliable. 
If you have the required adapter, just take your TeslaCam flash drive and connect it to your iPhone or iPad. From there, look for the Files application. At the bottom, tap the Browse tab and look under the "Locations" heading for your flash drive.
Now you can browse your saved and current TeslaCam and Sentry Mode videos. You can also simply delete them if you need to free up space on your flash drive.
Since the launch of beta versions for iOS 13 and iPadOS 13 earlier this month, I have kept the required adapter in the center console of my model 3. When I notice an event in Sentry mode, I can use the flash drive from my Model 3 and connect to my iPhone (or iPad) to quickly view the footage. This is far better than plugging my flash drive into my computer and having to retrieve the footage, especially since there was a high likelihood that I would forget about my drive and leave it connected to my computer for several days.
As I said earlier, this is still not a perfect solution – and the ultimate goal should be for Tesla to support the display of clips directly on the screen in the car. However, this is a much better solution for iPhone and iPad owners to watch Sentry Mode and TeslaCam footage on the go.
iOS 13 and iPadOS 13 are currently in public beta, and you can read the full instructions for installing these betas on 9to5Mac. The updates will be released in stable form in September.
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