Immediate recommendation: Open Settings → Network & internet → Internet (or Connections), tap the active entry or the stored network you need, choose Share, confirm with PIN or biometric unlock, then read the key shown under the QR code or scan the QR with a second device to extract it.

Exact QR extraction: The QR payload contains security type, SSID and the secret in a single string (example fields: T:WPA; S:; P:; ). If the UI hides the plain text, save or export the QR image and run it through a decoder (online decoder such as ZXing’s /w/decode or a local tool like zbarimg) to get the secret string in clear text.

Scanner options: Use a modern camera app that decodes QR codes, a dedicated QR scanner or upload the exported QR image to an online decoder. On a PC, install zbarimg (Linux/macOS) and run zbarimg qr.png to print the payload; on Windows use any trusted QR utility or the ZXing online decoder.

Router fallback (if you control the network): Log into the access point at common addresses 192.168.0.1, 192.168.1.1 or 192.168.1.254, go to Wireless or Security settings and read the network key listed there. If you don’t know the admin credentials, check the device label for defaults (common pairs: admin/admin or admin/password) or perform a factory reset on the router to restore defaults.

Notes on compatibility: Devices running OS version 10 and later typically offer the Share → QR flow and require local confirmation (PIN/fingerprint). Older builds may lack that option; in those cases the only non-destructive ways are router access or another already-connected device sharing connectivity. Avoid any method that requests elevated system access unless you explicitly consent and understand the risks.

Do you mean a specific number of sections? You wrote "0" – please confirm how many headings you want (or allow me to choose, e.g., 8).

I recommend eight headings to deliver thorough coverage while keeping each segment focused and scannable.

Proposed structure with target lengths and intent: Scope & objectives – 200–300 words explaining target devices, user prerequisites, and legal boundaries; Permissions & privacy basics – 250–350 words listing required OS permissions, what each exposes, and revocation steps; System settings walkthrough – 400–600 words with exact menu names and suggested screenshots for stepwise guidance; QR-code export & scanning – 300–400 words showing creation, scanning methods, and security caveats; Third-party tools comparison – 400–600 words comparing reputable apps, permission footprints, ratings snapshot, and trade-offs; File-based retrieval without elevated privileges – 400–600 words detailing credential storage paths, safe ADB/file-manager methods, and handling files securely; Troubleshooting & FAQs – 300–400 words addressing common errors, permission denials, and quick fixes with example messages; Security checklist & final actions – 200–300 words recommending post-action steps such as revoking access, rotating network keys, and when to contact vendor support.

Estimated total: ~3,000 words; approximate read time: 12–16 minutes. I can deliver a full draft in 3–5 hours, or produce a two-stage deliverable (outline + full text) within 48 hours if you prefer incremental review.

Confirm "8" to proceed with the above outline, specify a different count if desired, or allow me to pick another number and I will adapt section scopes and word counts accordingly.