WhatsApp Lines for ChatGPT.
Non-VoIP. Verified.
Give your OpenAI bots a dedicated UK mobile identity on Vodafone. Satisfies Meta's carrier HLR checks, preventing automated VoIP suspensions before your bot sends its first message.
Connecting Your ChatGPT Bot.
Four robust architectural stages to hook OpenAI API endpoints directly into WhatsApp Business.
Provision Real Mobile Line
Receive an authentic UK 07xxx number instantly. Carrier-level Vodafone routing ensures it possesses genuine Mobile Network Codes (MNC).
Handset Anchor Activation
Scan your QR code on a physical smartphone or companion device. The eSIM registers directly with UK cellular cell towers.
WhatsApp Business Register
Open WhatsApp Business, input your SecondSim number, and receive the SMS confirmation code cleanly without automated fraud blocks.
Bridge OpenAI Webhook
Hook inbound customer queries to your ChatGPT Assistant pipeline via webhook automation (n8n, Make, or custom API endpoints) and return verified responses.
Pick Your Line For ChatGPT.
Live in 60 seconds. Instant cancellation anytime. Zero hidden charges.
Flex Line
- Real UK 07 Mobile Number (Non-VoIP)
- WhatsApp Business Compatible
- Unlimited UK Incoming/Outgoing Calls
- Unlimited UK SMS Messages
- Inbound SMS when roaming
- Instant eSIM — Live in 60s
Annual Line
- Everything in Flex Line
- 2 Months Free vs Monthly
- WhatsApp Verification with a Real UK Mobile Number
- Free PAC Number Porting
- Priority Developer Support
Pro Unlimited Data
- Unlimited UK High-Speed 5G Data
- Unlimited UK Calls & SMS
- Full 5G Mobile Hotspot & Tethering
- No Speed Throttling
- Cellular Failover for Automation Servers
People who finally switched off
"Running a salon meant clients contacting me 24/7. There's no more evening anxiety when my phone buzzes."
"I've framed it to clients as a priority hotline. Nothing gets lost, and I get my evenings back."
"I juggle a job and two side-gigs without carrying a second phone or signing a contract."
SecondSim vs VoIP & Burner SIMs.
Why professional agent builders choose cellular-backed eSIMs over virtual numbers.
| Metric | SecondSim | Virtual VoIP Apps | Supermarket PAYG SIMs |
|---|---|---|---|
| WhatsApp Business Compatibility | ✓ 100% Guaranteed | ✕ High suspension risk | ✓ Supported |
| Carrier Signaling (MNC native) | ✓ Tier-1 Vodafone cellular | ✕ Software VoIP flag | ✓ Physical MNO |
| OpenAI API Verification | ✓ Full Native Support | ✕ "VoIP not supported" | ✓ Supported |
| Setup Speed | ✓ 60 seconds • Digital eSIM | Instant (unusable) | 2–3 postal days |
| Number Retention | ✓ Permanent • Active line | ✕ Lost if unrenewed | Recycled if no top-up in 90d |
Frequently Asked Questions.
Equip your ChatGPT bot in 60 seconds.
Real UK 07 carrier mobile line on Vodafone. Non-VoIP registration for WhatsApp Business and OpenAI developer APIs.