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Kotlin app for Android

I need an app that acts like an API to dial numbers, hang up, and send SMS messages. The app will listen on the USB port for JSON messages.

Dial a number

Message: {"action":"dial", "number":"+6155555555"}

Reply: {"status":"OK"} or {"status":"failed"}

Dial a USSD code

Message: {"action":"dial", "number":"*123*45678*90#"}

Reply: {"status":"OK"} or {"status":"failed"}

Hang up / end call

Message: {"action":"end"}

Reply: {"status":"OK"} or {"status":"failed"}

Send SMS message

Message: {"action":"sms", "number":"+6155555555","msg":"Text message"}

Reply: {"status":"OK"} or {"status":"failed"}

The app will:

1. Execute the intent (dialling a number, ending call, sending SMS)

2. Display received messages on the screen (just scrolling text)

3. Save a log to a file on the phone

The app will be installed via APK (no intention to distribute on the app store).

Phones are all Samsung Galaxy A20 (Android 9, USB-C).

Skills: Android, Mobile App Development, Kotlin

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About the Employer:
( 0 reviews ) Toorak, Fiji

Project ID: #25640243

9 freelancers are bidding on average $233 for this job

jastp

Hi there! I've read the details you mentioned and I'm interested in working on this app at very fair cost with great quality! If you give us your few minutes for the chat then we can discuss some important points abou More

$500 AUD in 5 days
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haseebburiro

Hello, I am a Mobile app expert and I am confident about your work. Also, I can do that with my bid price for your successful product. As a senior mobile app developer, I have rich experiences and high skill in native More

$160 AUD in 4 days
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4.9
DataOnMatrix

Hi there, I can develop App that act like an API to dial numbers, hang up, and send SMS messages. I've 7+ years of experience in developing both Native & Hybrid/Cross Platform - iOS & Android Mobile Apps, have strong More

$250 AUD in 30 days
(2 Reviews)
3.7
DeveloperArtem

Hi I can make your android app fully. could you discuss about detail in chat? thank you

$250 AUD in 7 days
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Jackmeena

Hii, I have gone through with post and undertand what you want here. I'm new here and want express my skills through this project. I'm App Developer having 6 year experience in Android , IOS and in PHP frameworks to More

$200 AUD in 7 days
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apachigroup

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$250 AUD in 20 days
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0.0
StanislavRezer

Hi Manger! Here is an Android Expert. I have many experiences in developing apps and games. My developing years is 10 years if you hire me, you will see what is talent developer.

$140 AUD in 2 days
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Rahul2232001

Hi, I have gone through your requirements and I can do this task. The skills and resources needed for this project are in my genes. I can assure you for a complete professional work in given time line. Please share com More

$50 AUD in 1 day
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0.0