I'm with Orange, but I've always used T-Mobile's signal because it is far stronger in Edinburgh (for those that don't know, in the UK, Orange and T-Mobile allow people to use each other's signal). It usually shows up as "Orange T-Mobile" in the menu bar, but from today, its just been showing up as "Orange". I switched my signal to Orange then back to the T-Mobile one and it was the same strength (though definitely the same strength as T-Mobile, not the usual bad signal from Orange). So it appears that they've combined the separate signals into one entity? If I'm on "Orange" as the signal, it'll roam both Orange or T-Mobile towers. Before, for your phone to switch to T-Mobile if you had bad signal involved your phone actually having no signal at all, then it would search and then connect to T-Mobile's signal. This implementation is great as it means the signal is always the strongest without the user having to intervene to manually force one. But I can't find any news on their website of this actually being the case. Anyone else noticed this?