1
SIM card
Insert your own SIM card into NSP Kit. NSP is not a mobile carrier.
Personal cellular gateway
Your SIM card, running through your own NSP Kit
NSP Kit receives calls and SMS through a cellular modem, while your iPhone or Android phone connects as an authorized client. Your number, SIM card, and carrier plan stay yours.
self-hosted
privacy-first
iOS / Android
one active device
your SIM / your number
Production-like Pi 5 + Waveshare/SIMCom kit, Ethernet primary, cellular modem for calls/SMS and fallback data.
1 kit -> 1 active client
Ethernet + LTE fallback
Setup flow
Setup takes only a few minutes
The kit works as a personal gateway for your SIM card. The user enters the endpoint, Kit ID, and password printed on the kit label.
2
Network and power
Connect power and Ethernet. The modem handles calls, SMS, and backup data channel.
3
Mobile app
Install NSP on iPhone or Android and authorize the device using the kit label data.
4
Calls and SMS
Incoming events are delivered to the active client; replacing a phone deauthorizes the old client.
Product capabilities
A personal cellular bridge with the core pieces included
Calls
Incoming and outgoing calls go through your SIM card and arrive in the app.
SMS
Receive and send messages from the iOS/Android client.
One active client
A new phone automatically deauthorizes the old one to reduce privacy risk.
Diagnostics
The kit monitors modem, power, temperature, data channel, and client status.
Native clients
One interface for calls, contacts, and messages
NSP clients feel like a familiar phone app: Recents, Dialpad, Contacts, Messages, and Kit Settings.
Compatibility
iOS 26+ via TestFlight. Android 16+ via release APK.
Install
Install test clients
Initial authorization requires endpoint https://nsp.cfax.ru, Kit ID, and Kit Password from the kit label.
iOS 26+
Scan the QR code to open TestFlight and install NSP Mobile.
Android 16+
Scan the QR code or download the release APK directly from the backend.
latest.apk ยท sha256
Beta testing
NSP Kit is currently in beta
No subscription fee is charged during the beta period. Temporary outages or bugs may occur, and the NSP team monitors feedback, fixes confirmed issues quickly, and ships regular updates.
Pilot access
Request NSP Kit access
Leave your contact and platform. We will reach out for pilot access, a demo, or kit discussion.
Important note
NSP does not provide cellular service. The user brings their own SIM card, phone number, and carrier plan. Final host compliance validation is required before fulfillment.