Getting VPN working on a corporate iPhone or Android.
Mobile VPN is different: do not full-tunnel a phone or you waste the data plan. Per-app VPN via MDM is the modern path. Microsoft Tunnel, Tailscale and Cloudflare WARP all do this well.
Try this first
- 1Configure per-app VPN via Intune or Jamf: only the corp app routes through the tunnel.
- 2Avoid always-on unless security requires it, otherwise it eats battery and data.
- 3Use cert auth via SCEP instead of password prompts, otherwise users get constant MFA popups on the phone.
- 4Test the Wi-Fi to 4G handover so the tunnel reconnects without the user noticing.
When to bring us in
Many BYOD phones without MDM: move to app-level secure tunnel (zero-trust app-by-app) instead of device-level VPN, otherwise you are stuck in privacy debates.
See also
- VPN will not connect or keeps droppingTwo main causes: your home internet or the VPN server. One quick test separates them.
- VPN connects but corporate folders are unreachableConnection says "green" but your network drives will not open. Almost always a DNS or routing issue.
- Home PC slow on VPN, fast at the officeThree suspects: home internet, VPN server limits, or routing that takes a long detour.
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