SIM Vault: Contacts Offline

Your SIM, your contacts, your devices. Nothing leaves them.

SIM Vault is the privacy-first successor to the classic SIM Manager. It keeps
your contact backups entirely on your phone and moves them straight to your
other devices — over your own Wi-Fi or Bluetooth — without the internet ever
being involved.

◆ Vault — backups that stay yours
Select any contacts and save them as named snapshots inside the app. Snapshots
never sync, never upload, and are even excluded from system cloud backups.

◆ Transfer — phone to phone, encrypted, offline
Send a snapshot to SIM Vault on another Android phone or an iPhone:
• Wi-Fi: both devices on the same network or one device's hotspot
• Bluetooth: Android to Android
Every transfer is end-to-end encrypted (ECDH + AES-256-GCM), and a 6-digit
code shown on both screens proves no one is in the middle — the same idea as
Bluetooth pairing codes.

◆ SIM & network panel
Carrier, country, slot, eSIM status, network type, roaming and your number —
for every SIM in a dual-SIM phone. Honest by design: Android 10+ blocks apps
from reading IMEI/ICCID/IMSI, so SIM Vault tells you that instead of showing
fake values.

◆ Export & import
vCard (.vcf) and spreadsheet (.csv) files through the system file picker —
compatible with Excel, Google Contacts and iPhone.

◆ What SIM Vault does NOT do
✗ No ads · ✗ No analytics · ✗ No account · ✗ No cloud · ✗ No internet access
to your data — the only network traffic is the direct, encrypted link between
your own two devices, on your own network.

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