Is it permissible to use the Holy Quran on a mobile phone to follow the Imam who makes many mistakes in vowelization (tashkeel) and words, omits verses, and prolongs the recitation, and what is the solution to this problem?

The one most proficient in recitation should be put forward for leading the prayer. The Imam is advised to review his recitation before the prayer. A linguistic error (laḥn) in parts other than Al-Fatiha does not invalidate the prayer according to the majority of scholars. Prompting the Imam (fatḥ) in parts other than Al-Fatiha is not obligatory unless the error corrupts the meaning. It is not appropriate to use a mobile phone to prompt the Imam due to the distraction from prayer and the excessive movement that could invalidate it.