Wi-Fi Direct forms a peer group with a Group Owner. Soft AP turns a phone into a Wi-Fi access point that other devices join. Both can provide a local connection for file transfers without a router. ShareGo’s Android host design prefers Wi-Fi Direct when available and keeps Soft AP as a fallback, rather than depending on one way to create the network.
The distinction is how Android creates and manages the connection. It does not, by itself, tell you which route will transfer a file faster.
How Wi-Fi Direct and Soft AP create a network
Wi-Fi Direct: a group with an owner
Wi-Fi Direct is also called Wi-Fi P2P. A group has one Group Owner, often shortened to GO, and devices connected to it. Android provides WifiP2pManager to manage these groups. No existing router or internet connection is required. See Android’s Wi-Fi Direct guide.
Group ownership can be negotiated between peers, but an app can also ask Android to create a group with the local phone as its owner. ShareGo’s host implementation uses this second approach: the host creates the group before the other phone joins.
There is an important overlap with ordinary Wi-Fi. Android documents that a group created with createGroup() can accept both P2P devices and conventional Wi-Fi clients. A connecting device therefore does not always need to negotiate a P2P group itself. A network that another phone joins by name and password is not necessarily a Soft AP network.
Soft AP: a phone acting as an access point
Soft AP means software-enabled access point. The phone hosts a Wi-Fi network; another device joins as a Wi-Fi client. This is the access-point model familiar from phone hotspots.
Android distinguishes hotspots that share an internet connection from local-only hotspots used for communication between nearby devices. Soft AP describes the access-point capability, not a requirement to share mobile data. The Android platform documentation covers both uses.
For local sharing, Android’s startLocalOnlyHotspot() API lets an app request a hotspot with no internet access. The app receives the connection details when Android starts it. ShareGo’s reviewed implementation uses this local-only hotspot path on Android 8.0 and later; older Android versions use a separate compatibility path.
For a broader explanation of local networks and internet access, see Wi-Fi Direct, hotspots, and local Wi-Fi explained.
The differences that matter when choosing
| Question | Wi-Fi Direct | Soft AP for local sharing |
|---|---|---|
| What does Android create? | A P2P group with a Group Owner | A Wi-Fi access point |
| How is the host established? | Peers can negotiate ownership, or an app can create a group as owner | The phone starting the hotspot is the access point |
| How can another device join? | As a P2P group client, or as a conventional Wi-Fi client where supported | As a conventional Wi-Fi client |
| Which Android API is central? | WifiP2pManager |
WifiManager, including the local-only hotspot API |
| Does local file sharing need internet? | No | No, when using a local-only hotspot |
The choice is not simply “peer-to-peer versus hotspot.” A Wi-Fi Direct Group Owner also performs an access-point role. The useful distinction for an Android app is which platform service creates the network, what connection information it exposes, and whether that path is usable on the device.
Nor does either role decide who may send a file. Once the app session exists, the host can receive as well as send. File selection and transfer remain the app’s responsibility in both cases.
Why ShareGo prefers Wi-Fi Direct and keeps Soft AP
This section describes the Android implementation reviewed on September 19, 2026. It is an architecture explanation, not a compatibility test or a guarantee that every store version uses the same selection policy.
Wi-Fi Direct is the first candidate when available. Its group-creation API fits ShareGo’s host-and-join design: one phone creates a local network and provides an invitation for the other phone. Creating the group explicitly gives ShareGo a defined host without requiring the two users to decide network ownership through peer discovery.
Soft AP provides another way to create that local connection. In the reviewed automatic selection policy, Wi-Fi Direct precedes Soft AP. If the Wi-Fi Direct candidate is unavailable, Soft AP can be tried directly. If a Wi-Fi Direct attempt fails and fallback is allowed, the host can move to Soft AP after closing the previous attempt. This is a new network attempt, not a promise of uninterrupted transfer across two networks.
The reason to keep both paths is to avoid making a usable host connection depend entirely on one Android network-creation mechanism. This order expresses a connection policy; it does not establish that Wi-Fi Direct is always faster or that Soft AP always succeeds.
ShareGo uses these connections for nearby file sharing on Android and iPhone. For the actual app steps, use the Android-to-Android guide or the Android–iPhone guide. The download page has both app-store links.
Based on a review of ShareGo’s implementation. Menus and available options can vary with your app and system version.
Our editorial approach·Report a correction