VNPT
Step1: App store/CH Play → VNPT SmartsCA to download
Step 2: Log in
Step 3: After logging in, the app will display the signing requests → tap on 'Sign' or view details to tap 'Sign'
Step 4: Enter OTP
Note: For each transaction, the signing time is limited to 5 minutes from the moment the signature is confirmed on the Tanca app. If the time expires or if you press cancel, the contract on Tanca will be considered unsigned.
VIETTEL
Step 1: App store/ CH Play → MySign to download
Step 2: Log in.
Step 3: Choose Danh sách xác thực ký
Step 4: Select the signing request → tap 'Authenticate Signature' or view details to tap 'Authenticate Signature'
Step 5: Enter OTP.
Note: For each transaction, the signing time is limited to 3 minutes from the moment the signature is confirmed on the Tanca app. If the time expires or if you press cancel, the contract on Tanca will be considered unsigned.
