the GPS in most cell phones are not like those in your handy GPS receiver that you take hiking. Most cell phones do not allow the user direct access to the GPS data, accurate location determination requires the assistance of the wireless network, and the GPS data is transmitted only if a 911 emergency call is made.
You can read reviews for cell phone gps locators on retrevo.com.
Cell phone GPS locators are fairly accurate. If you are looking for pinpoint accuracy, I would recommend a GPS console unit like a Garmin or a Magellan rather than a cell phone.
Not all cell phones have gps locators in them. Smartphones and iphones tend to be the only phones that have gps navigators at this time. If you are purchasing a phone and you want this feature you will need to make sure to research.
Many wireless providers, such as Verizon and Sprint, offer cell phone locating services. These locators are often used by parents who wish to keep track of their children.
There are many cell phones that have GPS locators on them and all smartphones have this capability. You can also install app's on your smartphone that can show you where you phone is if you have lost it.
You should consider the price, minutes available and whether you have texting before choosing a cell phone plan.
If you are buying a cell phone from Ebay you should be aware of any damages the phone may have. You should also check the rating of the seller so you do not get scammed.
I think that land Lines are still a necessity until cell phones have been perfected. Not all cell phones are equipped with GPS locators and that can raise complications in emergency situations when detecting a location is crucial to survival.
Cell phone locators are software based, and cannot be activated without the users permission. Most phone providers sell a service to allow tracking of personal phones, but 3rd party options exist too. I recommend http://www.phoneonmap.com/ for their Phone on Map service.
You should be aware of the price of the cell phone plan and any limitations that are involved in the plan.
There are some legal issues wih international cell phone rentals. The rates and plans should be considered and the contract read carefully before renting international cell phones.
Go to your local phone service store in your town. Ask them if you can get a cell phone card for your cell phone. They should be able to answer your question.