What expense category is a phone?
There is no definitive answer to this question, as the correct expense category for a phone will depend on the business' accounting system and how it classifies expenses. However, some common expense categories for phones are 'Communications' or 'Telephone and Internet'.
Another factor to consider is whether the phone is being used for business purposes or personal use. If the phone is primarily being used for business, then it is more likely to fall into an 'Expenses' category, whereas if it is primarily for personal use, it is more likely to fall into a 'Personal' category.
Ultimately, the best way to determine which expense category is correct for a phone is to speak with your accountant or financial advisor.