finish up voip client job -- 6

1- Please don't bid then ask me later what is my budget. 2- Only bid after you read the job descriptions and know you can do the job. I have a custom andriod voip client done using linphone. the job was not 100% completed. I need to: 1- fix / change the logo and 2- turn off access to settings , 3- turn off the sip address when dialing a number, and 4- make the app recognize only the last 5 digits of the phone number. 5- Publish to google play. 6- give me the final source code. 1- You can download the apk file from [login to view URL] and the 2- Source code: [login to view URL]