While some people use spyware maliciously, spyware on a child's cell phone can help mom and dad watch out for their children. Follow these steps to download spyware to a cell phone.
Know your laws first. It may be illegal to use this method of parental supervision, so make sure you find out what your local and state laws are before putting spyware on a cell phone you don't own. There is news going around right now of stalker boyfriends and girlfriends putting spyware on each others phones without giving consent. Use common sense before doing anything that would infringe on the lawful rights of others.
After you've found the spyware software you want to download to your cell phone, follow the steps the product provider gives you. They will use your cell phone number to access your phone to download the spyware. The spyware is usually stored in the operating settings of your phone, so if you ever want to remove it, pay attention to where it says it will be stored.