Android device guide
Android VPN
Android can keep a selected VPN active and optionally block connections outside it. Always-on and lockdown settings create a strong baseline when the provider and device reconnect reliably.
01
Always-on VPN
The system can start a compatible VPN at boot and keep its service running. Test the provider over real network changes and confirm that battery controls do not interfere.
02
Lockdown mode
Blocking non-VPN connections prevents accidental bypass but can complicate captive portals and troubleshooting. Know how to disable it locally when the gateway is unreachable.
03
Dual SIM and eSIM
The VPN should follow the active data line. Test manual and automatic SIM switching, roaming, APN settings, and transitions after signal loss.
04
DNS, split tunneling, and hotspots
Review app exclusions and Private DNS interactions. Test tethered devices separately because hotspot traffic may bypass the phone's VPN.
Primary references
How this guide is grounded
SimVPN.com separates SIM provisioning, mobile carrier operation, device VPN controls, and account security. Our articles link to platform documentation and public-sector guidance, then translate those boundaries into practical test plans.
Next step
Test the full mobile path.
Check cellular data, Wi-Fi, network switching, DNS, tunnel failure, tethering, and carrier account recovery—not only the connected icon.