BigBearVPN (iPhone) Tutorial

Switch to an Overseas Apple Store and Download BigBearVPN

Open the App Store and tap the avatar icon in the top right.
Scroll to the bottom and tap Sign Out.
Tap Sign In using Apple ID.
In the official dashboard obtain the shared Apple ID by clicking "View Shadowrocket Download Account (Shared Overseas Apple ID)". (If you already have your own overseas Apple ID, skip this step.)
Enter the provided account and password, then tap Continue.
Tap Other Options at the bottom, then choose Not Now / Don’t Upgrade.
Tap the Search icon in the bottom navigation bar, enter bigbearvpn or 大熊vpn, then download.
Done! BigBearVPN has been installed.

Tap the Profile icon in the bottom tab bar.
Tap Account Management, enter your member username and password, then tap Login.
Tap the Shield icon in the bottom tab bar to return to Home, then tap the On button.
Tap Allow (grant VPN permission).
Enter your device passcode.
Connected successfully.

Tap the On button.
Tap Confirm; an ad will load. If no ad appears, it means there is no advertiser in your city. Or try the TestFlight Mainland Ad Version.
After the ad finishes, tap Allow (grant VPN permission).
Enter your device passcode.
Connected successfully.