Is it permissible to take the price of the mobile phone from the wages of the employee who neglected to close the shop window, which led to the theft of the device?

The private employee is entrusted with what is in his possession, so he is not liable for what perishes unless he exceeds limits or is negligent. If his exceeding limits or negligence is proven by evidence or confession, then he is liable for what perishes, and it is permissible to deduct the value of the stolen items from his dues.