I live in a small country (Singapore), and in some places, sometimes the network signal from a neighbouring country (Malaysia, Indonesia) is actually stronger, and my phone switches network. This means I incur overseas charges while I am still in my own country! Is it possible to make the network selection manual? i.e no auto switching. I would rather have no signal than have it switch to an overseas network. p.s I've already disabled data when roaming, to minimize any such accidental charges.