I pre-ordered a no-commitment iPhone 6+ 64GB on launch day but I am contemplating canceling the order, purchasing the phone on contract through Verizon and then a month later immediately switching to T-Mobile and having them pay off the Verizon ETF. Ultimately netting a cheaper price for a no-commitment iPhone 6+. The T-Mobile ETF payoff offer has a couple caveats as I understand it. - You must port in a phone number, this phone number must match the line on which the ETF is to be paid. - You must trade a device (presumably a smartphone) into T-Mobile. - You must purchase a device (presumably a smartphone) from T-Mobile. - T-Mobile will take approximately two months to send you the ETF rebate. For the past year I have been on T-Mobile's $30/mo pre-paid plan that includes 100 voice minutes, unlimited texting and unlimited data (first 5GB @ LTE speed) per month. For the ease of keeping this calculation simple all monthly service costs will be listed as delta over $30/mo to see if this will personally save me money or not. iPhone 6+ 64GB no-commitment price $849, this is the price to beat. iPhone 6+ 64GB 2 year contract price $399, $35 activation fee and $30 delta cost of service for one month of Verizon service, total $464. Port to T-Mobile, two months of T-Mobile service, $20 delta cost of service per month for two months $40. Total so far $504. Purchase of an outdated smartphone for trade-in to T-Mobile via craigslist, $50. Total so far $554. Per Vdubguy18 T-Mobile will accept any cell phone for trade in, smart or dumb, functional or broken. This invalidates this line item and saves me $50 as I have old flip phones lying around. Total so far $504. Purchase of a refurbished Nokia Lumia 510 from T-Mobile $50 (Technically I will have some trade-in value from whichever phone I just traded in... but I'll assume $0 just to have the worst case covered). Total so far $604. Per Vdubguy18 the cheapest phone T-Mobile has for sale is $30 not $50 for an additional $20 savings, total so far $534. At this point I should be free and clear to take my new iPhone to whichever carrier and whichever service plan I'd like, total savings ($849 - $604) are $245. My regional sales tax is 8%, so if you're being generous I'd save an extra $36 in sales tax on the original iPhone purchase as well for a total saved of $281. Updated savings ($849 - $534) = $351!!! I will also have an extra (refurbished) Nokia Lumia 510 that I can hang onto for a backup or sell to recoup a little extra money. Can anyone point out anything I've missed or any reason why this isn't a good idea?