Most employers will compensate workers who use BYOD (Bring-Your-Own-Device). This amount is usually between $30 and $50 each month, intended to cover part or all of the cell service plan. It can vary widely based on the amount of device usage expected. If it's supplemental or not a large part of the workday, an employer may not provide as much of an allowance as one that works with the device for the majority of their day.