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I will build a linphone softphone app, voip dialer, call centre app
Xiami Tech
About this gig
CUSTOM SOFTPHONE APP | VOIP APP | LINPHONE APP | ESIM INTEGRATION
Are you looking for a reliable, production-ready VoIP or softphone app built on proven technology like Linphone, SIP, Twilio, or Telnyx? You've come to the right place.
I specialise in building custom softphone apps, VoIP dialers, Linphone-based apps, and eSIM solutions for Android, iOS, and web apps that are clean, scalable, and ready to go live.
WHAT I BUILD:
Softphone & Linphone Apps
SIP registration & call management
HD voice/video calling (Linphone SDK, WebRTC)
Push notifications for incoming calls
Custom branding & white-label UI
VoIP Solutions
Twilio, Telnyx, SignalWire integration
Auto-dialer & IVR systems
Call recording, call transfer, voicemail
Multi-line support & call centre features
eSIM & Virtual Number Apps
OTA eSIM provisioning
Virtual phone number management
In-app purchases & subscription billing
Global carrier integration
Admin & Backend
React / Node.js admin dashboard
User management, analytics, billing
Secure REST API & cloud backend
WHAT YOU GET:
Fully functional app (not a template)
Source code (Standard & Premium)
Setup documentation
Live APK/IPA for testing
Get to know Xiami Tech
Xiami Tech
Full Stack Software Developer
- FromThailand
- Member sinceJan 2025
Languages
English, Thai
At Xiami Tech, we specialize in crafting high-performance, user-friendly mobile apps for iOS, Android, and cross-platform solutions. Whether you're a startup or an established business, we transform your ideas into scalable, feature-rich apps using cutting-edge technologies like Flutter, React Native, Swift, and Kotlin. Our focus on sleek UI/UX, robust functionality, and seamless performance ensures your app stands out.
From concept to launch, we handle everything: custom development, API integration, testing, and ongoing support. Affordable, reliable, and deadline-driven.
FAQ
What platforms do you develop VoIP and softphone apps for?
I develop softphone apps and VoIP solutions for Android (Kotlin/Java), iOS (Swift), and cross-platform using Flutter or React Native. This covers everything from basic Linphone-based dialers to full-featured enterprise VoIP apps with SIP trunk support.
Which VoIP providers do you work with?
I've integrated with all major VoIP providers including Twilio, Telnyx, SignalWire, Vonage, and FreePBX/Asterisk. I can also help you configure SIP trunks from providers like Bandwidth, VoIP.ms, or any other SIP-compatible carrier.
Can you build a Linphone app with custom branding for my business?
Absolutely. White-labelling a Linphone-based softphone app is one of my core services. I'll replace all Linphone branding with your own logo, colours, and app name, configure your SIP server settings, and deliver a production-ready APK/IPA.
Do you build eSIM apps or integrate eSIM functionality?
Yes. I build eSIM management apps with OTA provisioning, carrier profile switching, and integration with platforms like Telnyx, Truphone, or your own MVNO backend. I can also build the companion admin dashboard for managing eSIM subscribers.
Will I receive the source code?
Source code is included in the Standard and Premium packages. You'll receive a clean, well-commented codebase via GitHub or ZIP delivery, along with setup documentation so your developer can maintain it going forward.
How does the delivery work and what happens after?
I always recommend a brief project discussion before you order so I understand your exact requirements. Once the order starts, I'll send progress updates and a test build before final delivery. All packages include post-delivery support for any bugs found within 14 days.
Can you integrate push notifications for incoming VoIP calls?
Yes, and this is critical for any production softphone app. I implement push notifications using Firebase Cloud Messaging (FCM) for Android and APNs for iOS, ensuring users receive incoming VoIP call alerts even when the app is in the background or closed.
I have an existing Linphone or softphone app. Can you modify it?
Yes. I regularly work on existing codebases — adding features, fixing bugs, updating the UI, migrating to newer SDKs, or integrating new APIs. Share your current code/requirements in a message and I'll review it and provide a custom quote.
