T vs Auth.Jc

Discover the easiest way to activate the Un-carrier on your phone with T-Mobile Prepaid eSIM. Unlock the potential of your iPhone with eSIM functionality and join the T-Mobile nationwide network effortlessly. Download the app, select a prepaid plan, and you're ready. With eSIM, you can conveniently manage two lines on a single phone, making it ideal for those who need to handle both their business and personal numbers from one device. For those planning a trip to the US, eSIM enables you to set up your phone with a local number, ensuring seamless communication. Activating your number is easy. Embrace the Un-carrier experience on your eSIM today. So that you know, this service is not available for devices locked to another carrier. The availability of specific prepaid plans may vary at the time of purchase. It could differ from the screenshots shown in the App Store preview. If you need any assistance or support, please don't hesitate to reach out to us at eSIM@t-mobile.com.

Auth.Jc is a full-featured authentication demo built with React Native. It showcases a production-ready auth stack with multiple sign-in methods, secure credential storage, and a polished iOS UI. Sign-In Options • Apple Sign-In (iOS only) • Google Sign-In • GitHub Sign-In • Email and password • Biometric login — Face ID and Touch ID Security • JWT access and refresh tokens with automatic refresh interceptor • Credentials stored in the device Keychain — never in plain storage • SSL certificate pinning • Rate limiting on login and password reset attempts • Input sanitization and XSS prevention Features • Push notifications via Firebase Cloud Messaging • Deep linking for password reset flow • Dark and light themes with multiple color palettes • Profile editing with photo upload • Localization — English and Spanish • Portrait-optimized for iPhone Auth.Jc is an open-source portfolio project demonstrating modern React Native architecture. It is not a production identity provider.