Before reaching out to our live support team, please review this comprehensive knowledge base. It covers the technical specifications, billing logic, and troubleshooting protocols for the OTPDesk infrastructure.
When an app rejects a number instantly, it is rarely a problem with the physical SIM card. Modern risk engines analyze your entire digital footprint before deciding to send the SMS.
If the app says the number is invalid, it usually means your IP address has been flagged, or there is a geographical mismatch. You MUST use a high-quality residential proxy located in the exact same country as the virtual number you purchased. If you use a free public VPN (like ProtonVPN or NordVPN), the target app will reject the number immediately, regardless of how clean our SIM infrastructure is.
No. OTPDesk hardware modems are strictly configured to process text payloads (SMS) only. We actively block all incoming voice traffic at the carrier level to conserve bandwidth and prevent our numbers from being flagged by automated telemarketing scanners.
If an app (like Telegram or Amazon) attempts to call you, do not panic. Let the app's internal voice-call timer run out. Once it fails to connect, the app will offer an option to "Send Code via SMS" instead. Click that option to receive your OTP.
No. We operate a high-rotation, single-use infrastructure to guarantee maximum security. Once a specific virtual number is used to successfully verify a service, our system permanently blacklists that number for that specific service.
This prevents "account collisions." For example, if you verify a Telegram account with a UK number, nobody else will ever be able to use that same UK number for Telegram again. This ensures that a stranger cannot hijack your session months down the line. Because of this, you cannot rent the same number twice.
The OTPDesk billing engine is fully automated and requires exactly 1 network confirmation on the Tron blockchain (for USDT TRC-20 and TRX).
If your balance hasn't updated, the delay is almost always on the exchange's side. Exchanges like Binance, Bybit, and KuCoin often hold withdrawals in a "Processing" or "Pending Review" state for 5 to 15 minutes before they actually broadcast the transaction to the blockchain.
If your TXID shows "Success" on TronScan, but your OTPDesk balance still reads 0.00, simply copy the TXID and message our Telegram support for an instant manual credit.
Absolutely not. Your deposited USD balance is tied securely to your encrypted account and never expires. You can deposit funds today, take a break from your marketing campaigns, and return six months from now—your funds will still be there without any maintenance fees or penalties.
This error occurs because your script is polling the /order/status endpoint far too aggressively. Our Web Application Firewall (WAF) enforces a strict 5-second delay between status checks for the same order ID.
If your script uses a basic while(true) loop without a sleep(5) function, it will hammer our database cluster hundreds of times a second. Our server will automatically return a 429 error and temporarily blacklist your IP address to protect against DDoS attacks. You must implement exponential backoff and a hard 5-second delay in your polling logic.