HEXIGON

MobiFone Pay Wallet Mobile App

Designed a secure and intuitive e-wallet with advanced features for bill payments, mobile top-ups, exclusive deals, and multi-factor authentication including fingerprint recognition and auto-logout for enhanced security.

Capabilities

Cross-platform native app (Flutter) for iOS & Android
E-wallet features: top-up, P2P transfers, bill payments
Multi-factor (OTP, PIN) & biometric (fingerprint, face ID) authentication
Loyalty & cashback engine with telecom-integrated promos
Secure session management & auto-logout

Technologies

Flutter & Dart
Firebase Auth & Firestore
RESTful Node.js backend
PCI-DSS–certified payment gateway
Azure for analytics and notifications

Team

5 Software Engineers
3 Testers
1 Product Owner

Outcome Achieved

30% growth in active users within 6 months
25% shift from scratch cards to wallet top-ups
20% faster transaction processing
4.9/5 average app rating

Value Delivered

Driving Financial Inclusion Through Secure, Smart Cashless Solutions

Broadened financial inclusion by providing cashless payments to under-banked segments; integrated bill reminders and auto-pay reduced missed payments; biometric security and encrypted transactions built trust; telecom promos drove adoption; analytics enabled targeted offers; supported national cashless agenda.

Customer

MobiFone

MobiFone, one of Vietnam’s “Big 3” telcos (50 M+ subscribers), launched MobiFone Pay under the national mobile-money pilot to extend digital financial services to unbanked and rural users. Leveraging its telecom infrastructure, it aimed for 5 M active users in 12 months.

Key Highlights

Phone-number wallets with telecom and bank-card top-ups.

Bill payments, P2P transfers & QR-code checkouts.

OTP & biometric login for banking-grade security.

Exclusive data/cashback rewards for transactions.

In-app guidance for novices.

Customer Testimonial