The Xperia 10 II will be available to purchase at a “buy outright” price of just £319. You can also stick just the phone on a pay-month plan, which works out at £14.60 via RateSetter (£25 deposit) over 24 months. You then just need to get yourself a giffgaff goodybag.
The new version of the Sony Xperia 1, cunningly called the Sony Xperia 1 MK II, is £899 if you can afford to buy it outright. Otherwise it’s £43.39 per month with a £25 deposit over a 24 months period.
You get the phone unlocked but you will initially need to purchase a goodybag worth £10 or over.
Get more information on the giffgaff website