Build an android based SIP Softphone

Full Time Mobile / Web developer for 7 years. Hi. I've got to know that you need to build an android based SIP Softphone. I think I can complete your app with my skills. https://www.freelancer.com/u/kongxiangjia.html. I am one of top 1% mobile/website developers in this website. I will upload source code after complete. I will maintain and fix bugs for 3 months. Regards Li

HI, I am Android expert with rich experiences. I am very interested in this project. Hope to work with you. Best Regards

Hi... How are you?. I saw your description carefully your project and i'm very interesting your project. But i have some question about your project. When you have enough time to discuss about your project with me, please contact me. Thanks time:8/1/2018 17:27:40----1533115660250

Hello, I am working as a individual, full time freelancer, Android App Developer. I have 7+ years of experience in Mobile (iOS/Android) app development and Web development(PHP, .NET, C#, JAVA). Thanks 


Hi, Thanks for your job posting. I've read your project description carefully. As a senior android app developer, I have rich experience in this kind of project. I am sure I can handle this project as you expected. If you have desire to work with me, please respond me to discuss more. Thanks.

Hi Friend, I have good experience in SIP based android app development. As i reviewed your requirement it's looking good to me and i would like to discuss further with you. I will show my example SIP app which i developed. Feel free to contact me. Thanks,

Hello. Linphone experience.

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Hey there, After looking at your job description, I understood workflow. I have more than 10+ years of experience in Mobile application design and development. I have been already completed 500+ mobile application projects. I am an expert in Android, mobile application, Software architecture. Looking forward to your end. Kind regards. Ankit.

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Hello, We are a Team of Freelancer Developers having more than 8 years of experience in Software Development,Java, Python, Android, iPhone, Mobile App Development, Graphic Design, HTML, Website Design and much more, Kindly connect to Discuss in Detail. Thanks, Athmin Team.

With vast experience in Android development, I have been working in the field from last 5 years and have adequate knowledge of all the tools to develop one complete custom mobile application. I have profound expertise in developing extensive android applications on Android studio with Firebase integration and also knows the complete in-depth knowledge of Ios development, as I have delivered many projects to my vast stack of clients around the world on both of these technologies

Hi, Thank you for giving me a chance to bid on your project. i am a serious bidder here and i have already worked on a similar project before and can deliver as u have mentioned I have got Rich experience in Joomla, Wordpress, Codeigniter, Cake PHP), .NET, Asp.NET, Vb.NET, HTML 5 etc.& mobile apps Also have very good knowledge of javascript, jQuery Json, API, Prototype Frameworks, and have developed various Parallax, Fluid responsive design. I am ready to discuss with you with best Regards

Hi, We are working on outbound calls, so we have configured Asterisk server and connected it with sip trunk. Also to make calls we have developed a android SIP client which can dial, and receive sip based calls. It takes username(extension), domain and secret and registers to the server and once connected it is able to make calls inbound and outbound. We have the code which is basic and bug free and we can sell it to you Contact for a demo