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I need the app to spring to life the instant my backend flags an incoming call. Your task is to wire Firebase Cloud Messaging so a data-only payload triggers a full-screen ringing interface that mirrors the native phone experience: • On iOS it must invoke CallKit, complete with ringtone, vibration, and the system-style Accept / Decline buttons. • On Android it should raise a foreground ringing activity (or service with a heads-up notification) that looks and sounds like the default dialer, using the proper notification channel. The wake-up sequence must work whether the app is in the foreground, background, or has been swiped away. As soon as the user presses Accept, control passes to my existing VoIP screen—your implementation ends there. Please keep the code clean and well-commented, and note any required entitlements, permissions, or manifest updates.
Project ID: 39724654
14 proposals
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Active 9 days ago
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14 freelancers are bidding on average $50 USD for this job

Hi Omer M., Good morning! I am skilled mobile developer with skills including Android, VoIP, Android App Development, App Development, iPhone, Android SDK, Mobile App Development and iOS Development. Please contact me to discuss more regarding this project. Thanks & Regards
$45 USD in 1 day
6.2
6.2

Hello, This project involves creating a seamless call alert integration using Firebase Cloud Messaging, bringing the app to life instantly upon receiving a call. I have extensive experience building responsive notification systems and integrating with native mobile features like CallKit (iOS) and Android’s dialer interface. I’m particularly adept at crafting robust, well-documented code that aligns with platform-specific requirements. I’d be happy to discuss the project further and detail how I can deliver a polished solution.
$40 USD in 5 days
3.8
3.8

Hello, Greetings Omer M., Good morning! I am professional mobile engineer with skills including iPhone, Android App Development, VoIP, Mobile App Development, iOS Development, Android, Android SDK and App Development. Please send a message to discuss more regarding this project. A fast response is appreciated Angel
$45 USD in 1 day
3.7
3.7

"This project is perfect for me, I recently did something similar to this project for another client. I can wire Firebase Cloud Messaging to trigger a full-screen ringing interface for incoming calls, seamlessly invoking CallKit on iOS and a foreground ringing activity on Android. While I am new to Freelancer, I have tons of experience and have done other projects off-site as I run an Agency. I would love to chat more about your project! Look forward to chatting to you, Chloe"
$50 USD in 14 days
3.5
3.5

Hi, This is very doable, I can get it working cleanly and reliably. I understand the importance of seamlessly triggering the ringing interface upon an incoming call, maintaining a native phone experience. I would wire Firebase Cloud Messaging to prompt CallKit on iOS and a foreground ringing activity on Android. I'll ensure the system-style Accept/Decline buttons are included, and the setup functions regardless of the app's state. While I’m new to Freelancer, I’ve delivered solid results for clients in the same space. Let’s connect. I’d love to move forward with your project. Regards, Ernst
$50 USD in 14 days
0.0
0.0

Hi there! I see you need FCM to trigger full-screen call alerts, but making it work reliably when the app is killed or in the background is tricky and platform-sensitive. I can integrate FCM so data-only pushes wake the app and display a native-style call UI—CallKit on iOS and a foreground ringing activity on Android—with proper sound, vibration, and Accept/Decline buttons. I’ll ensure the wake-up works in all app states and provide clean, commented code with all required entitlements and permissions documented. Do you want me to prepare a quick demo to test both iOS and Android flows before full integration? Start chat now so we can finalize the setup and required steps.
$40 USD in 7 days
0.0
0.0

I'll bring your app's incoming call feature to life using Firebase Cloud Messaging for seamless integration: • iOS: CallKit will trigger full-screen Call UI with ringtone, vibration, and system buttons. • Android: Foreground ringing activity or service with heads-up notification for native dialer feel. Functionality will work in all app states. The user experience will smoothly transition to your VoIP screen post-Accept. Code will be clean, well-commented, and all necessary permissions will be noted. Let's make your app ring true to native phone UX seamlessly. Looking forward to collaborating, Herbert
$50 USD in 14 days
0.0
0.0

I know how valuable your time is, so I’ll make sure your project runs smoothly from start to finish. Your task is to wire Firebase Cloud Messaging to trigger a full-screen ringing interface that mirrors the native phone experience on iOS using CallKit and on Android with a foreground ringing activity. The implementation must seamlessly transition to your existing VoIP screen upon user acceptance. While I’m new to Freelancer, I’m highly motivated to build lasting client relationships by delivering fast, high-quality work every time. Looking forward to working with you and delivering exactly what you need. Regards, Randy Petersen
$50 USD in 30 days
0.0
0.0

Hi there, I’m excited about the opportunity to bring your vision to life! With my deep expertise in both mobile development and Firebase Cloud Messaging, I can create an intuitive, seamless experience that mimics native phone behavior the moment your backend flags an incoming call. For iOS, I’ll leverage CallKit to create a full-screen ringing interface with ringtone, vibration, and easy-to-use Accept/Decline buttons. This will work flawlessly whether the app is in the foreground, background, or has been swiped away. On Android, I’ll build a foreground service with a heads-up notification, mimicking the native dialer’s look, sound, and feel. I’ll ensure the call interface works seamlessly and hands off control to your VoIP screen as soon as the call is accepted. With attention to detail, clean code, and clear comments, I’ll provide you with a reliable solution that includes all necessary permissions and manifest updates. Your app will feel smooth, responsive, and like a native calling experience on both platforms. Let’s discuss how I can help make this project a success!
$100 USD in 7 days
0.0
0.0

Hi there! I know it is hard to make a real phone like incoming call show up the moment your server flags it. It is even tougher when the app is closed or swiped away and users miss the ring. I will wire Firebase Cloud Messaging so a data message wakes the app fast and shows a full screen ring view. On iOS I will use CallKit with proper ringtone vibration and native accept and decline. On Android I will start a foreground ringing screen with a proper notification channel that feels like the stock dialer. I will keep code clean and commented and list every needed permission entitlement and manifest change. Do you already have Apple push credentials and Firebase set up for both iOS and Android projects? Open chat now.
$40 USD in 7 days
0.0
0.0

I am excited to help you implement a seamless incoming call experience using Firebase Cloud Messaging. I can set up a robust, data-only push system that triggers a full-screen ringing interface on both iOS and Android, ensuring it works reliably whether the app is in the foreground, background, or terminated. On iOS, I will integrate CallKit with ringtone, vibration, and system-style Accept/Decline buttons, while on Android I will implement a foreground activity or heads-up notification that mirrors the native dialer experience. My solution will hand off to your existing VoIP screen as soon as the user accepts the call. I follow best practices for clean, well-commented code and will guide you through all necessary entitlements, permissions, and manifest configurations to make this fully functional.
$40 USD in 7 days
0.0
0.0

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