You are on location. The client needs the cut today. Your laptop is not here. All you have is your iPhone and a finished export sitting in your Files app.
Here is how to get that file to your client from your iPhone, without compression, without requiring them to create an account, and without using iCloud links that expire or require sign-in.
Why the obvious methods do not work
iMessage: Compresses video automatically. Your 4K export arrives as a compressed, low-quality file. Not usable for client delivery.
AirDrop: Requires both devices to be nearby and on the same Wi-Fi or Bluetooth range. Works for on-set handoffs to a local client, but not for remote delivery.
WhatsApp: Compresses video. Same problem as iMessage.
iCloud link: Requires your client to have an Apple ID or sign in to iCloud. Brand clients and agency contacts will not do this.
WeTransfer mobile: As of late 2024, clicking a WeTransfer link on iPhone prompts email verification, which leads to account creation. Clients who are not expecting this stop. You get a "I can't open your link" message.
Google Photos or Google Drive: Requires your client to have a Google account. Microsoft 365 users, Apple-only users, and anyone without a Google account will be asked to sign in.
The method that works from iPhone
Upload the file from Safari directly to a delivery tool. Share the link. Your client clicks it on any device and downloads the original file.
Step 1: Locate your file
Large video files on iPhone are typically in the Files app. After editing in LumaFusion, DaVinci Resolve for iPad, or exporting from Photos, the file is saved to a local folder or iCloud Drive.
Open the Files app and confirm the file is there. Check the file size. For ProRes files shot on iPhone 15 Pro or later, a short clip can be several GB.
Step 2: Upload from Safari
Open Safari on your iPhone and go to your delivery tool. On TrunkTransfer, the homepage has an upload widget. Tap the upload area.
Safari on iOS shows a file picker. Navigate to your Files app and select the video file. The upload begins immediately.
For large files on mobile, keep Safari in the foreground while uploading. iOS may throttle background network activity if the browser goes to the background during a large upload.
Step 3: Wait for the upload to complete
Mobile upload speed depends on your connection. On a strong Wi-Fi connection, a 5GB file takes roughly 10 to 15 minutes. On LTE, plan for longer.
A progress indicator shows how far along the upload is. Do not close Safari or lock the screen during upload.
Step 4: Copy the delivery link
When the upload finishes, the delivery link is displayed. Tap and hold to copy it. The link is a direct URL to a download page.
Step 5: Share the link
Paste the link into your email, Slack, or any messaging app. Your client opens it, sees the file name and size, and taps Download. No account. No app. The original file downloads to their device.
What if my file is in the Camera Roll?
If your video is in the iPhone Camera Roll rather than the Files app, you have two options:
Option 1: Save it to Files first. In Photos, tap Share, then Save to Files. Choose a location. Then follow the steps above.
Option 2: Some delivery tools have iOS apps that can upload directly from Photos. Check if your delivery tool has an iOS app.
Note: Videos in the Camera Roll shot in ProRes or HEVC may be large. Check the file size before uploading on a mobile connection.
Tips for uploading from location
Use Wi-Fi when possible. A 10GB file on LTE takes significantly longer than on a fast Wi-Fi connection. Coffee shops, hotels, and client offices often have Wi-Fi that is faster than mobile data.
Enable Airplane Mode first, then connect to Wi-Fi only. This prevents LTE interference and forces all traffic through the faster connection.
Keep the screen on. Tap Settings, Display and Brightness, Auto-Lock, and set it to Never while uploading. Reset this after.
Use Low Power Mode off. Low Power Mode can throttle background processes. Keep it off during upload.
After the upload: confirm delivery
Once the link is sent, wait for a download notification. A notification email arrives the moment your client clicks Download. If you have not received one after a few hours, follow up.
This matters when you are delivering from location and cannot check in as easily. Confirmed delivery means you can move to the next thing.
Related guides
- How to send large video files to clients — the full overview covering all devices and methods
- How to send large video files on Android — the equivalent guide for Android devices
- How to deliver 4K video to clients — codec choices, expiry settings, the pre-send checklist
Frequently Asked Questions
Can I send a large video file from iPhone without an app?
Yes. Use Safari on iPhone to upload directly to a web-based delivery tool. No app required on your end. No app required on your client's end.
Why does iMessage compress my video?
iMessage automatically compresses video to reduce message size. This is a feature for casual sharing, not for professional delivery. Always use a file delivery link for client work.
How large a file can I upload from iPhone?
The limit depends on your delivery tool. TrunkTransfer supports up to 200GB per transfer. The practical limit on iPhone is storage space and connection speed.
Does uploading from Safari work on older iPhones?
Yes. The web upload works on any iPhone running a modern version of iOS. Safari accesses the Files app for file selection. No specific model is required.
What if my upload fails halfway?
Some delivery tools support resumable uploads. If the upload fails, try again from the same device. TrunkTransfer's upload remembers progress for the same file and can resume from where it stopped.
