This implementation uses my own telegram client written from scratch and has infinite lists that reusing items shown on screen in both dialogs and messages, so it can handle really large chat history without losing FPS
I had no time to finish list renderer so sometimes it lags.
I'm not autoconnecting to any DC at start, so move from phone to code takes a bit longer than for other participants.
Also I forgot to add button for password submitting so please press enter, 2FA works.
Implementation uses mtproto 105 layer and secure web sockets connection.

The contest task is not completed: the signup flow is undone (profile photo uploading is missing). The overall quality is below average.
The country selector behaviour is incorrect, the chats header is incorrect ('Durov's channel' everywhere). Chats chaotically disappear in the chats list, stop being displayed.
There's also a critical issue when you open a chat several times in a row, the messages can blink, disappear or overlap each other.

it takes too long between phone input and code request; scrolling doesnt work in chats and is infinite in chats list

I can't select a country from the country list. No validation for phone number.

Nothing happens after I click on a country

Login doesn't work(good code)

I tried my best)

Flags for country not loaded