What happens if the contract is signed via SMS with a SIM card not issued to the user's data?

Question

Law in IT

Hello.
Heard about:

In accordance with Part 3 of Article 432 of the Civil Code of the Russian Federation, the Party that has accepted from the other party full or partial performance under the contract or otherwise confirmed the validity of the contract is not entitled to demand recognition of this contract as not concluded if the statement of such a requirement, taking into account specific circumstances, would be contrary to the principle of good faith (Article 1, paragraph 3).

But, what if the SIM card to which the SMS came is issued not for the documents that the user sent?
Will the contract be considered legally signed in this case? And will it have YUR force?

Answer 1

SMS signature? Seriously? Can I take the phone number of the CEO and sign the company for myself?