So I've recently updated from a Lumia 925 (T-mobile) to an unlocked 1520, and man oh man I adore this phone! But it uses a smaller SIM than my 925, so if something were to happen to it, I wouldn't be able to immediately swap my SIMS, I'd have to get a larger one for the 925, and this bothers me. What are my options as far as a Lumia that is compatible with the 1520's SIM, and can be bought inexpensively? I need something as cheap as possible, because I don't want to spend too much money on a phone that is only going to be used in an emergency.