Apps for iPhone

Gary

my phone start to damage.  I want to change my mobile phone.  I consider to choose Iphone or other smart phone.  I am interested in this software.  I am worrry about
1. the data is accuracy or not
2 I am a thin person so that I worry that I canot run long distance when I carry he phone (I worry about the weight of the phone)
3. how long the battery can support for GPS ( I am worry about the phone is out of battery within 2 hrs)

Based on the above information, I consider to buy iphone or not.

Gary

thanks for your details information

I consider which plan is suitale for me (e.g. 100, 500 or unlimited).  I mean that this app. use the size of the internet services .  For example, i run 3 hrs, the app continue to update the map information from the web-sites in every minute.  Therefore, the size of the internet serives are possible greater than 500 MB.  I do not know my interpertation is correct.

Gary

thanks for information