I'd ask how
but they'd probably close whatever loopholes you're exploiting. So I'll just click instead.
( uberdeity Wondered why Owen Lars knew of the term "hell" on, Fri 24 Oct 2008, 10:04, 1 reply)

Not that hard
Use various sites like "onecompare" and "nocostmobiles" to identify the best deal on a contract.

Then use affiliate schmes like "quidco" (NOT the ones you used in step 1 to find the deal!) to get some cashback for taking out the contract.

Then use ebay or other marketplace to sell the handset for as much as possible (helps to do your research on which handsets sell for the most before choosing your deal at step 1).

Finally use a free reminder site like "memo to me" to diarise all the claim dates for your cashback so you never miss a single one.

Setup envelopes & photocopies off all relevent claim paperwork in advance so when you get each bill, pop them in the envelope and post on the relevent date.
(golddust QOTW now revolves around being a cunt, Fri 24 Oct 2008, 10:16, closed)