Need a freelancer with extensive knowledge of the system level functions and protocols of Android especially call / messaging protocols and app development capability. IoS would be an added advantage, but not mandatory.
The project will be discussed upon sighting the profile and with above proficiency.
37 freelancer đang chào giá trung bình ₹123825 cho công việc này
Dear Sir, I am most experienced with CallKit iOS and and have implemented VoIP calling in android also. Please review my profile and let me know when we can discuss more? Looking forward to your reply. Thanks.