Prior to buying a new android mobile does anyone know if Smart Talk works with 'Three' networks all-you-can-eat data?
If you are talking about 3G data, then performance is not that good on 3G, and some providers block certain ports.
Its best to use the app on WiFi.
Further to Keith's advice above; no issues fed back with "3" but there are a couple of handsets that fellow-customers have reported issues with ST via wi-fi.
I think it was a Motorola and Xperia, but a trawl using the search function should pull up any threads on handsets you are considering buying using a "3" SIM card.
Just after launch of ST some customers reported ussies with T-M [but not EE, Orange or Virgin ] network. AFAI recall, nothing about "3".............