I received a reply to the email I sent to T-Mobile asking what speeds Ishould be geting on the basic Web n Walk package, if this is HSDPA and if there are any speed limits imposed by T-Mobile.
This was the reply I received...unfortunately doesn't really help and I'll need to get some speed tests from different areas and get back to them:
I understand how important it is to receive a standard HSDPA connection for internet access on your phone. I'll certainly check and advise appropriately.I'd like to tell you that the HSDPA speeds depend on the coverage and the phone compatibility. If you're in a area of very good coverage you may receive an upload speed between 1.0 and 2.0 mbps and the download speed between 384 and 700kbps.
I see that the coverage in your area wit the postcode XXX XXX is very good 3G. However, the the 3.5G coverage in your area can be variable.
In areas of good coverage you'll be able to get good download speeds. And normally the closer you're to a transmitter, the better your signal strength will be.
The quality of the signal strength can be affected by a number of things such as surrounding buildings, hills and valleys, forest area and even the weather. So, I can't guarantee that you'll receive complete coverage as this is not manually controlled.
If there are any other applications running in the background on your phone, this can also reduce the performance of browsing. Please follow the user manual to close all the running applications completely before you start browsing.
The phone will pull up the network which is best available at any given point in time, so as the 3G coverage in your area will be better than HSDPA, this will hover the network reception.
You may have to manually select the network if the coverage is too low
If you're still experiencing any problems, please try your SIM card in any other phone so that we can identify if the problem is with the phone or the network.
In order to appropriately identify if there's a fault please check if you're experiencing problems in one particular postcode or more than one area. If more than one postcode, please reply with these postcodes so that we can identify the speeds you're supposed to receive.