Is it permissible to take out one's phone and read a verse to the Imam if he stops and is unable to complete it, and no one else prompts him?

It was mentioned in Fatwa 131929 that it is not appropriate to correct the Imam from a mobile phone, nor is it appropriate to take out the phone during prayer to look at the Qur'an and correct the Imam. Reciting a surah after Al-Fatiha is recommended, and prayer is not invalidated by omitting it. If the Imam forgets a verse from Al-Fatiha, the congregants do not need to take out their phones. Nevertheless, whoever takes out their phone, looks at the Qur'an, and corrects the Imam, their prayer is not invalidated if their movement was minimal.