What would be a good service now to unlock At&t iPhone 7 under contract fast within 24 hours. I see Keys2iPhone.com has the 3 working days premium unlock for At&t. Have anyone tried it? Chronicunlocks and the rest of them guys advertise over 10 days. So if you need something quick where to get it done? What about the new specs of iPhone 7 from At&t? Is it true it won't work on Verizon or Sprint. So we can basically only take it to T-Mobile. How about other GSM providers like say MetroPCS? And how about oversees networks? Will it work on international networks after unlock? I read somewhere that Apple decided to use a different modem because of some network upgrade planned for the future. Is that true? Can someone with the info shed some light on this?