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My Android app is experiencing issues with Google Sign-In on the login screen. Users are encountering an authentication error, and despite having implemented all required APIs and permissions, the problem persists. Error: firebase_auth/unknown. An internal error has ocurred. Requests from this Android client application [login to view URL] are blocked. After set all SHA-1, package name,.. everything.. When I use app within closed test in google play console I get this error. But if I try it with flutter (vscode) it works perfect... Ideal Skills and Experience: - Proficiency in Android app development - Extensive experience with Google Sign-In integration - Strong problem-solving skills to troubleshoot authentication errors - Expertise in API implementation and permission settings - Ability to conduct thorough testing to ensure issue resolution.
Project ID: 39232639
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Active 1 yr ago
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40 freelancers are bidding on average €24 EUR for this job

Hi. As an Android Expert, I am very interested in your project. I am very familiar with Android Studio and Google Sign-In. I have mobile and backend skills with 8+ years. I wish to work for you. Thanks for attention.
€10 EUR in 1 day
7.2
7.2

Dear client, Let me try to solve your sign in issue, I have more than 9 years of exp in apps and web development.
€10 EUR in 1 day
6.1
6.1

Android / Flutter developer with an experience of 5 years in the field , i have read the details of project carefully and would like to help you solve this issue . Thank you
€30 EUR in 1 day
5.7
5.7

Dear client, I'm excited to help resolve the Google Sign-In issues in your Android app. With hands-on experience in Google and Firebase services, including Auth, I understand the complexities of authentication errors and the nuances of API integration. I’m confident I can diagnose why requests from your given Android client app are being blocked and resolve with my experience. My Approach: - Reproduction: Reproduce the error in your closed test environment. - Configuration Audit: Review and verify all SHA-1 fingerprints, package names, API keys, and OAuth consent settings in the Firebase console and Google Cloud Console. - API & Permissions Check: Ensure that all required APIs and permission settings are correctly enabled and not restricted. - Detailed Logging: Implement comprehensive logging to capture detailed error messages and isolate the issue. - Iterative Testing: Make incremental adjustments, testing each change to confirm resolution. - Clear Communication: Provide regular updates and a detailed report of the troubleshooting process. Let's collaborate and create smooth, reliable Google Sign-In experience for your users. Best regards, Manish Dhanani
€10 EUR in 2 days
5.9
5.9

Hello Dear! Good Day! Hope you are doing fine. This is Toriqul Islam . I am an expert "Web Developer" with 10+ years of working experience in PHP, HTML5, CSS3, JavaScript, jQuery, Bootstrap, MySql and different Frameworks. Hire me and you don't have to worry about your website problems again! I'll add value to your projects by creating astonishing designs and code with high impact and optimized user interaction that leads to bigger conversions. WHAT PROBLEMS CAN I HELP YOU SOLVE? Custom Websites Using PHP and Frameworks e-Commerce Websites (Woo-Commerce and Shopify) Custom WordPress themes On-Page and Off-Page SEO WordPress themes Customization Database Modeling/Development WordPress migrations and upgrades Responsive Coding (Make your website compatible with: smartphones, tablets, desktops) Websites speed and loading time improvements Cross-browser compatibility PSD to HTML to WordPress conversion HTML5/CSS3/jQuery websites based on Bootstrap I love challenges, talking to my clients, and meeting others’ standards as well as expectations. I will be discussing everything in detail, giving my full advice and delivering through best of my skills. You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam
€29 EUR in 1 day
5.4
5.4

As an experienced Android developer with profound knowledge not only in Java, but also in Flutter and iOS, I am more than prepared to assist you with your Google Sign-In issue. My comprehensive understanding of the crucial APIs and permissions settings necessary for synchronization within Android apps, combined with my extraordinary problem-solving skills, makes me the perfect fit for this project. Having integrated Google Sign-In in numerous applications throughout my journey, I've encountered similar issues previously and possess the know-how for efficient error resolution. My commitment to testing every aspect of my projects ensures that all possible loopholes have been sealed - this includes thorough roundabouts with closed testings in Google Play Console. Utilizing Firebase and incorporating Web APIs is something I excel at - I fully understand its power to amplify the performance of any app. In addition, my attention to detail and dedication to eliminating errors will ensure that your app will work seamlessly once the problem is diagnosed and fixed. So, trust me to leverage not only my expertise but also my commitment to quality and affordable solutions on your behalf.
€30 EUR in 7 days
5.5
5.5

-------------------✔✔Hi, there! Senior Software Engineer with 10+ years of exp HERE!✔✔-------------------With over 5 years of experience in Android app development, I am confident in my ability to tackle and resolve the Google Sign-In issue on your Android app. Moreover, I have a deep knowledge and extensive experience with Google Sign-In integration which is crucial for resolving these authentication errors that you are currently facing. Through my previous projects, I have successfully implemented several APIs and permissions sets as well. One of my key strengths is my problem-solving ability, which has helped me overcome even the most challenging errors in the past. I bring this skill set to the table in order to identify the root cause of the error you're encountering and implement a targeted solution. Additionally, I know how important testing is - especially in resolving this kind of issue - and I'm committed to conducting thorough testing to ensure that the resolution is solid and effective. Overall, hiring me for this project not only means bringing on board a highly skilled Android developer but also someone who brings valuable business perspective through their solutions. I understand how important it is for an app to align seamlessly with the goals of its organization and that’s exactly what I'll focus on while fixing this Google Sign-In issue on your app.
€19 EUR in 7 days
5.2
5.2

I understand how frustrating it can be when everything works perfectly in Flutter (VS Code) but throws an error when tested in a closed test on Google Play Console. I’m confident that I can identify and resolve this issue quickly. ? Why Choose Me? ✅ Google Sign-In Expertise: Extensive experience resolving Google Sign-In and Firebase authentication issues. ✅ Flutter & Android Proficiency: Deep understanding of Flutter development and Android release workflows. ✅ Problem-Solving Mindset: Proven ability to troubleshoot and resolve complex authentication errors efficiently. ✅ API & Security Best Practices: Ensuring a secure and properly configured application for production. Looking forward to resolving this issue and ensuring a seamless experience for your users!
€30 EUR in 1 day
5.3
5.3

As a seasoned Full Stack Developer with over seven years of experience, I can assure you that fixing your Android app's Google Sign-In issue is well within my expertise. My broad range of skills and deep understanding of backend and frontend development will enable me to solve the problem efficiently from all angles. Pairing this with my intimate familiarity of PHP, Laravel, CodeIgniter, and API development, where I worked extensively on various permission settings and API implementations, I believe I am the best fit for this project. Lastly, I'm an excellent communicator who understands the complexities of technical concepts yet knows how important it is to convey them in an accessible manner. Thus, I assure you'll understand every step we take towards fixing your app. My standing principle is quality and user-centricity, so rest assured that my focus will be wholly aimed at delivering a functional and hassle-free solution for both your clients and end-users. Let's collaborate for an unwavering end to your Google Sign-In trouble!
€11 EUR in 1 day
5.0
5.0

Buenos diás I understand your Android app is encountering authentication errors with Google Sign-In, specifically the "firebase_auth/unknown" error, despite having implemented the necessary APIs and permissions. This suggests a potential issue with the Firebase configuration, implementation details within your sign-in flow, or even a server-side problem impacting the authentication process. My skills in Android development and Firebase integration are directly relevant to addressing this problem. I possess a strong understanding of the Google Sign-In API, Firebase Authentication, and common troubleshooting techniques for such errors. My experience includes debugging similar authentication failures, often stemming from incorrect configuration files, mismatched SHA fingerprints, or improper handling of authentication callbacks. For example, I recently resolved a similar "firebase_auth/unknown" error for a client by identifying a mismatch between their debug and release SHA fingerprints in their Firebase project settings. I will utilize Android Studio, Firebase tools, and my expertise in Kotlin/Java to achieve this. I will also maintain open communication throughout the project, providing regular updates and addressing any questions promptly. I am confident in my ability to deliver a high-quality solution, ensuring your users can seamlessly log in using their Google accounts. My goal is to resolve this issue swiftly and efficiently, minimizing disruption to your app's functionality. I would be delighted to discuss this project further with you and answer any questions you may have. Please feel free to contact me to schedule a brief call. I look forward to hearing from you soon. Sincerely, Giáp Văn Hưng
€23 EUR in 7 days
4.9
4.9

I have extensive experience in **Android app development** and **Google Sign-In integration**, and I can help resolve your authentication issue efficiently. Since the error occurs only in the **Google Play closed test** but works fine in **Flutter (VS Code)**, the issue is likely related to: - **SHA-1/SHA-256 mismatches** between Firebase and Google Play. - **OAuth consent screen settings or API restrictions**. - **App signing key differences** between development and production. I will: ✔ Verify and align your **SHA-1 and SHA-256** keys across Firebase, Play Console, and Google Cloud. ✔ Review your **OAuth credentials** and ensure proper configuration. ✔ Debug authentication logs to pinpoint the root cause. ✔ Test the solution thoroughly before deployment. Let’s fix this and get your login flow running smoothly! ?
€15 EUR in 7 days
4.2
4.2

I have more then 10 years of experience in native Android application development. I am also well aware about Google Play Store review process. No upfront payment required. Assign project and pay when all done and tested by you. I have read carefully your details and checked your requirements.
€8 EUR in 7 days
4.0
4.0

Hi there, I can fix your issue. Message me for more details about the project. Looking forward for your message. Thank You
€25 EUR in 1 day
3.5
3.5

Hi there, I can help fix the Google Sign-In issue in your app. The error likely stems from the Google Play Console setup. I'll review your Firebase configuration, SHA-1 keys, and permissions, ensuring that authentication works both in the Play Console and locally. Let me know if you'd like to discuss further! Best regards, Nazarii
€19 EUR in 3 days
3.2
3.2

With over a decade of experience and an extensive track record of developing successful Android apps, I am well-equipped to handle your project. My proficiency extends beyond Java and Mobile App Development to include comprehensive knowledge in Testing/QA — a skill that proves vital when dealing with issues like the one you're currently facing. As your dedicated freelancer, I will tackle this project with my problem-solving prowess and commitment to thorough testing. With this approach, I guarantee that every possible error or bug standing between your users and a smooth Google Sign-In experience will be identified and rectified. Previous projects like WheelDot, Family Pharmacy, StockDaddy, and Chaipoint underline my dedication to creating seamless user experiences. Rest assured that hiring me means enlisting the services of not just an Android app developer, but also a seasoned professional who has led multiple teams and can handle complex tasks effectively. Together, let's fix these backend issues and ensure a reliable authentication process on your platform./1000
€19 EUR in 7 days
3.0
3.0

You add the incorrect SHA1, you add the SHA1 of the debug keystore but you need to add SHA1 of the release keystore to the firebase which you use to generate .aab file
€10 EUR in 1 day
1.6
1.6

With extensive knowledge in mobile application development and software architecture, I am confident that I can resolve the issues you have been facing with the Google Sign-In feature in your Android app. I have vast experience integrating Google Sign-In and know how to properly configure APIs and permissions to prevent errors like the one you are encountering. From initial settings such as SHA-1 and package name to identifying deeper issues in your code, I ensure a seamless implementation of critical features, aiming to enhance your app’s usability
€50 EUR in 1 day
1.9
1.9

Hi Xavier G., I just checked your job post, and I see you need someone experienced in Testing / QA, Android, Mobile App Development, Java and Software Architecture. I have worked on similar projects before and would love to collaborate. Please review my profile to see my experience with these technologies. Before we proceed, I have a few questions: 1. Are there any additional requirements? 2. Is there existing work, or does this need to be built from scratch? 3. What is your deadline for this project? Why choose me? ✅ 250+ successful projects ✅ No bad feedback in the last 5-6 years ✅ 100+ recent 5-star reviews from happy clients I am available from 9 AM - 9 PM Eastern Time. I’ll share my past work in a private chat for privacy reasons. Looking forward to your response! Best regards, Zain R
€8 EUR in 1 day
0.0
0.0

Hello, I am an experienced Android Developer with over 6 years of expertise in Android programming and end-to-end app development. Regarding the issue you're facing, the error appears to stem from a problem related to your Firebase Authentication setup. It seems that Firebase is rejecting the requests, possibly due to incorrect configuration or access issues. Once we come to an agreement, I can get started on resolving this problem right away. I will also ensure that any potential regressions around it are thoroughly checked and addressed. Regards, VS TechWorks
€25 EUR in 1 day
0.0
0.0

Hello, I have expertise in Android app testing and testing with Zephyr and Postman, ensuring a high-quality, bug-free app. I will deliver the project within 7 days, maintaining clear communication and efficiency. Let’s discuss your requirements further! Best regards, Akshat Jain
€19 EUR in 7 days
0.0
0.0

Castellnou de Bages, Spain
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