Opera Mini | Login
Opera Mini uses proxy servers to shrink webpage data by up to 90%. This is great for slow connections, but it breaks the HTTPS security required for modern logins. If a login form tries to talk directly to your bank’s server, but Opera’s server steps in the middle, the security handshake can fail.
You have two options to log in:
Opera Mini is famous for compressing data and saving bandwidth, but logging into websites works a bit differently depending on your device. Here's a complete guide. login opera mini