We need one sip client app for our android device. It will be run on 1 device so gui will be for the device resolution. App will need to support video (h264) and audio (pcmu). We will need to send dtmf codes. The android device isn't generic tablet and doesn't run google services. Example app would be simpler version of Grandstream wave-video. We may need debugging on the device as the device isn't generic tablet.