If you are using Wifi service at your place to download stuff on your iPhone and are confused with the Internet connection speed then check out Wifi Speed – A Online website which directly scans your internet connection speed and gives you with your IP Information, GSM Edge Speed & 3G Speed. You need to just access this website on your iPhone’s browser and then get the results your screen itself. If you try to access the same stuff on your computers browser you may get some approximate results since the website is mainly optimized for iPhone.
Though you can use our Speed Meter tool to check out the broadband speed of your ISP. Its not a iPhone’s normal App but a WebApp which can only be accessed through a browser and is not like other downloadable Apps which are needed to be downloaded through iTunes. You can repeat the measurements and take a average of all the results to know the accurate stats and even emails these results for taking a note of them.