I used only LTE from my mobile operator (TELE-2). We doesn't have any wifi networks in our place, so far away from the city (60km).

These days I was trying to understand how this happened. But all the known cases come down to is downloading the Electrum application from fake sites or entering a seed phrase in third-party applications. I didn’t do either one. the question is still open for me. It would be great if there were logs in the electrum, in which you could see from which application the transaction was made or any data about the device. but as I understand it is impossible.

No, I never heard of this application and did not install it on the phone. I am from Russia, sometimes new trends go up to us sometimes)

these days my family and I were cleaning the area around the house (we have something like a farm in the village). these days I almost did not use the phone. mainly telegram and viber for communicating with parents. I can definitely say that I did not install new applications (the latter was installed two weeks ago, this is soundcloud), and I can definitely say that these days I did not go into the electrum and did not perform any operations. On April 1st, I checked in the evening that a friend had returned my debt. I know many cases where hackers replaced links. I know cases when they replaced the address and bitcoins went to the address of hackers. but so far I could not find cases when this happened without any actions of the owner.that is why I want to understand in detail how this happened. Because while I do not understand this, I do not think it is safe for me to reuse this application. I'm sorry for my English, this is not my native language, in part, I use a translator. Here is a screenshot of the latest wallet transactions. https://i.ibb.co/yWjtqnG/Screenshot-2020-04-06-15-26-40-976-org-electrum-electrum.png

My phone have official firmware. If this can help to understand the situation, then today I will write a complete list of all applications on the phone.

All applications on the phone are downloaded from the play store. These are applications from banks, cards, food delivery services and instant messengers. After the money was stolen, I carefully scanned the entire list, all the applications are pretty famous.

"the seed phrase is written on a piece of paper and is hidden in my personal safe. no one can access her. besides this, I specially changed the word order on paper, the correct order is known only to me."

I create my seed by Electrum mobile.
Never used other wallets, this was not necessary

No. The phone was bought in the official store and in order not to violate the warranty, I did not do anything with the official firmware

When i use your link, i see Открыть, it's translate like Open.  This means that the electrum is installed from official page :
https://i.ibb.co/Z1JkPHv/Screenshot-2020-04-06-09-25-28-001-com-android-vending.png

Sorry, correct is "i downloaded this electrum from google play. I check it twice.

Electrum version 3.3.7. installed on Xiaomi mi9t pro. Nowhere else. Password protection has been enabled. On April 1, the wallet had 1.23595057 btc. Today I switched to a wallet to transfer part of the funds and was very surprised. Wallet balance 0. It turned out that on April 3rd at 23:05 a transaction was sent for the total balance. The transaction was send to address unknown to me: 13k4rgQ6b9LdBt6pvgLR5MSV6wAhujFpgq No one has access to the phone. Electrum has been downloaded from the official site. I know about phishing and always carefully check everything. Never updated the application. I download all applications for the phone only through the play market. Please tell me how this happened? What have I done wrong? for what reason have I lost all my savings?

But I did not mine anywhere except Kano. The last two days I had problems with disconnecting the asics because of the heat (ventilation can not cope). By what criteria did you block me?

Hello!
Today, all my asics have disconnected from the pool (just status dead). Also I can not enter the site (there is an error "Login Failed"). Tell me please what's wrong with my login? Login "talliar"