On Samsung Galaxy phones, Build number is usually under Software information, while Developer options appears near the bottom of the main Settings screen after activation.
1. Enable Developer Options on Samsung
- Open Settings → About phone → Software information.
- Tap Build number seven times.
- Enter the phone PIN, pattern or password if Samsung asks for it.
- Return to the main Settings screen and open Developer options near the bottom.
2. Select FlashGo
- Install and open FlashGo once.
- In Developer options, find “Select mock location app.”
- Choose FlashGo, then return to the app.
- Start a single test point and verify it in a map you control.
3. Prevent the session from stopping
If a route stops after the screen turns off, review Settings → Apps → FlashGo → Battery and allow background activity while testing. Samsung may also place infrequently used apps into sleeping lists. Restore your usual battery preference when finished.
Restore the real location
- Stop the active FlashGo session.
- Open Developer options → Select mock location app → None.
- Request a fresh position in a trusted map.
Common questions
Where is Build number on a Samsung Galaxy?
It is commonly under Settings → About phone → Software information.
Where does Developer options appear?
On current Galaxy phones it usually appears near the bottom of the main Settings screen after activation.
Do I need USB debugging?
No. Selecting a mock location app does not require USB debugging.
Official references
Menu names can change by model and software version. These manufacturer resources support the setup paths above.