Mobile app for Android and IPhone

VERY IMPORTANT This Project is for UK developers only. Outside UK proposals will be ignored. We are looking to for experience app developer that has experience with PJSIP CSIPSIMPLE and Phone Gap. We are looking to add WiFi option so users can call from our app. We also need to add some additional features into our existing Phone Gap app. We are international calls company and we want our users to connect to our network with Pause dial and WiFi. The current Phone gap app is already in place and active so the additional changes requires a resubmit to apple and Android.