📷 SonyTransfer

Lightweight Android app to transfer photos from Sony cameras via WiFi.

Built as a drop-in replacement for Sony's Imaging Edge Mobile (IEM), which has critical background crash bugs that make it unusable on modern Android devices.

✨ Features

• 📂 Browse all photos and videos on SD card with thumbnails
• ☑️ Multi-select batch download
• ⬇️ Per-file progress during download
• 💾 Saves to DCIM/SonyTransfer (visible in gallery)
• 🎬 Streaming download — supports 2GB+ videos without OOM
• 📶 WiFi gateway auto-connect — reads camera IP from DHCP
• 📡 WiFi network binding — works correctly even with mobile data enabled
• 🔓 No internet required — runs entirely over camera's local WiFi

📱 Supported Cameras

Any Sony camera that supports "Send to Smartphone" mode (PTP/IP over WiFi, port 15740), including:

• ZV-E10 (original, firmware v2.02) — primary target & test platform
• ZV-1, ZV-1F
• α6000 series, α6100, α6300, α6400, α6500, α6600
• α7 series (I/II/III), α7R series, α7S series
• α9 series
• RX100 series, RX10 series
• And many more Sony cameras with "Send to Smartphone" feature

Note: ZV-E10 II and newer cameras that use Creators' App may not need this tool.

Note: ZV-E10 II and newer cameras that use Creators' App may not need this tool.

📚 Third-Party Libraries

This project incorporates source code from the following library:

• libptp — Java implementation of PTP/IP protocol (ISO 15740).
  Copyright (C) 2017 Fimagena (fimagena at gmail dot com).
  Licensed under the GNU Lesser General Public License v2.1 (see libptp-LGPL-2.1.txt).
  libptp source files are located in app/src/main/java/com/fimagena/libptp/.

The library has been modified to support streaming file transfers (see AGENTS.md for details). All modifications are released under LGPL 2.1 as required by the license.

🚀 Usage

1. On camera: Menu → Network → Send to Smartphone (or "Ctrl w/ Smartphone")
2. On phone: Connect to the camera's WiFi network (DIRECT-xxxx-ZV-E10)
3. Open SonyTransfer → tap "Connect to Camera"
4. Browse & select photos → tap "Download"
5. Photos saved to DCIM/SonyTransfer 🎉

📦 Download

Go to Actions → click the latest successful build → download SonyTransfer-APK from Artifacts.

🛠️ Technical Details

Protocol Stack

Phone ←WiFi→ Camera (AP mode)
         ↓
    DHCP Gateway IP (192.168.122.1)
         ↓
    PTP/IP Protocol (ISO 15740, port 15740)
    ├── OpenSession
    ├── GetStorageIDs
    ├── GetObjectHandles (no format filter)
    ├── GetObjectInfo  → filename / date / size / format
    ├── GetThumb(handle)
    └── GetObject(handle)  → streaming to MediaStore

Architecture

• Kotlin + Jetpack Compose + Material 3
• OkHttp for HTTP (WiFi-network-bound socket factory)
• Coil for thumbnail loading
• MVVM with StateFlow

Why not just fix IEM?

Sony's Imaging Edge Mobile has a bug where the app process dies within ~100ms of going to background, even before connecting to any camera. This is an app-level defect (not OS kill), and Sony hasn't fixed it despite years of complaints. This app bypasses IEM entirely by speaking the camera's HTTP API directly.

📄 License

MIT — do whatever you want with it.