YES!
You must have a cell phone with a data plan to work on all tasks with Hyer. You have to be able to go into the app before, during, and after tasks to select different things in order to start and finish tasks. Please follow all task instructions that you are scheduled for to ensure you have completed the task accurately. Not having your phone to complete the tasks properly may run the risk of not getting paid.
Best Practice is to make sure you have your cell phone charged completely before starting a task.