This project was fully built with AI using GLM 5.2. The app works and that's all I know. Sorry if this readme or the code says or does anything stupid.

Share your Android phone's mobile data with other devices — without using your carrier's hotspot quota.

DataNet Share turns an Android phone with cellular data into a SOCKS5 proxy gateway. Other phones, tablets, or computers connect over Wi-Fi Direct (or USB/Wi-Fi for PC/Mac), and route their traffic through the host phone's cellular connection. Because the host phone simply appears to be using its own data — which it is — carrier hotspot caps never come into play.

• Version: 5.0 (unified)
• Min Android: 8.0 (API 26)
• Language: Kotlin (pure — no native code)
• Build: Gradle 8.2 + Android SDK 34

• One APK for both phones — install the same app on sender and receiver
• VPN-aware — routes proxied traffic through your VPN when active (carrier sees only encrypted traffic)
• Link speed test — measures the Wi-Fi Direct link speed between devices (10MB payload, no internet needed)
• Full TCP + UDP support — apps, browsing, streaming, gaming, voice all work
• Works with iOS — share with iPhones and iPads via the free Karing app (see Wi-Fi Direct mode below)
• No root required — uses Android's VpnService and Wi-Fi Direct APIs
• Survives screen-off — partial wake lock keeps the connection alive
• Privacy-focused — Cloudflare DNS (1.1.1.1), notification hides credentials on lock screen, no telemetry

Download the latest APK from Releases, then:

adb uninstall com.datanet.share   # remove any old version
adb install DataNetShare-v5.0-unified.apk

Install the same APK on both phones — sender and receiver.

1. Turn ON your VPN (e.g., Google VPN) if you want carrier privacy
2. Open the app → tap START SHARING (WiFi Direct)
3. Note the SSID and password shown in the blue card

1. Go to Android Settings → Wi-Fi → Wi-Fi Direct
2. Tap the sender's network → enter the password
3. Open the app → tap START RECEIVING
4. Grant VPN permission when prompted

That's it. The receiver now has internet through the sender's cellular connection.

On the receiver, tap LINK SPEED TEST after connecting. It downloads a 10MB payload from the sender through the SOCKS5 proxy and reports the link speed in Mbps.

There are three sharing modes in the app, exposed as three buttons: START SHARING (WiFi Direct), START LOCAL ONLY, and START RECEIVING. The first two run on the sender phone (the one with the data); the third runs on an Android receiver phone.

Creates a Wi-Fi Direct group with its own SSID and password. The sender becomes the group owner at 192.168.49.1 and exposes a SOCKS5 proxy on port 8282. This isn't limited to phone-to-phone — anything that can join a Wi-Fi network and speak SOCKS5 will work as a client: a PC, a Mac, another Android phone, or an iOS device. For an Android phone acting as the receiver, prefer the Receiver mode below instead of configuring SOCKS5 by hand.

iOS connects to the sender's Wi-Fi Direct network just like any other client, but because there's no iOS app for DataNet Share, the SOCKS5 proxy has to be set up on the iOS side using a third-party app. First, join the sender's Wi-Fi Direct network from iOS Settings → Wi-Fi using the SSID and password shown in the sender's blue card. Then:

To share with an iOS device, I'd recommend using the app "Karing" it is a completely free app that supports systemwide socks5 using a VPN setup. Simply install the app, accept the prompt asking to allow the app to setup vpn profiles, go to the app settings, click add profile, click import profile file, select the Json file you downloaded from the release section, go to the home page, toggle the switch from "Rules" to "Global" and then start the VPN

then go the homepage and activate the VPN!

Shares the connection over USB tethering, or over whatever Wi-Fi network both devices are already mutually connected to — no Wi-Fi Direct group is created. The receiving device still needs to be configured with a SOCKS5 proxy pointing at the sender phone's IP on port 8282.

Mac: System Settings → Network → Details → Proxies → SOCKS Proxy
Firefox: Settings → Network Settings → Manual proxy → SOCKS Host: phone's IP, Port: 8282, check "Proxy DNS when using SOCKS v5"

Built into the Android app and only available on an Android receiver phone — not for use with laptops, PCs, or iOS. The receiver phone runs a VpnService that captures all of its traffic and tunnels it through the sender's SOCKS5 proxy over the Wi-Fi Direct link. No manual proxy configuration is needed — just tap START RECEIVING and grant VPN permission when prompted.

"createGroup failed: BUSY" — Quick Share / Nearby Share may be holding Wi-Fi Direct. Disable both, toggle Wi-Fi, retry.

Nothing loads on receiver — Make sure the sender's mobile data is ON and the sender shows "active" status. The receiver's notification should say "VPN tunnel active."

Speeds are slow — Wi-Fi Direct speeds vary by device. The link speed test button can help diagnose. For best speeds, keep both phones close together.

Mac shows "no internet" — Normal. macOS checks the default route, not the proxy. Set the SOCKS5 proxy and it works.

VPN not capturing proxied traffic — Stop and restart sharing after turning the VPN on/off. The app checks VPN state when sharing starts.

Requires JDK 17, Android SDK 34, and Gradle 8.5+:

git clone https://github.com/Keggin-AI/DataNetShare.git
cd DataNetShare
./gradlew assembleRelease

Output: app/build/outputs/apk/release/app-release.apk

• No telemetry, no analytics, no trackers
• No traffic contents logged (only byte counts)
• DNS uses Cloudflare (1.1.1.1) instead of Google
• Wi-Fi Direct password hidden on lock screen
• When VPN is active on the sender, the carrier sees only encrypted traffic to your VPN endpoint — not the receiver's destinations, DNS queries, or SNI

A full security audit report is included in the repository.

MIT — do whatever you want with it.