Reference: Sharh ‘Umdatil-Fiqh – Tape No.4, Question No.4
Question: How should a mobile phone which has an impurity on it be cleaned, since washing it [with pure water] will damage it?
Response: [That being the case, then] don’t carry it with you during prayer, don’t carry it with you during prayer, [instead] leave it. When you want to pray, then leave it, and when you have completed your prayer, then take it.