Getting paid for work completed is always a hassle for tradies. The first part of getting paid is to generate an invoice for your customer.
When you are out on the job this is not that easy to do. If you have to wait until you are back in the office to issue an invoice this just causes a delay, This delay means it is likely to take longer for you to get paid.
However, there is good news if your business has a website and you have a smartphone. This is because this is all you need to get your invoices issued quickly and easily when you are out on the job.