What's the best way to unlock iPhone 4s?

I've tried going to several local iPhone unlocking service, but they've told me they don't unlock iPhones anymore i don't know why. So i began serching for other alternatives and found R-SIM, which i'm willing to pay for but i don't know why are there so many types (R-SIM 7, R-SIM 9, R-SIM mini, R-SIM gold, R-SIM 8…). I know that each update can disable its function, is it because of that? Please help me, is this good, are there any other not that expensive solutions, maybe with cydia?

The won't as it is illegal to unlock a phone. Only the carrier can unlock a phone proper.

  • What's the best way to unlock an iphone 4s? What is the best program to unlock an iphone 4s? Legally you can still unlock them if they were manufactured before January 26th 2013. I have used a gpp sim before but the activation code only works on one phone.
  • What's the best way to read digital comics? IPhone? On my PC? I don't have a shop near me, but I know you can buy them from a few places online and download them, or download the iPhone apps for them. What do you think is the best place to get them and the best way to read?
  • What is the best way to unlock my Verizon iPhone 5? I have a iPhone 5 with verizon and have done a bit of research and know there are like tons of websites that sell the software to unlock iphones i was just wondering if anyone knew some legitimate ones that stand out?
  • What is the best way to unlock my iphone 4 for tmobile? My brother left me his iphone 4 but its for at&t and i have tmobile. I went to tmobile they gave me a site to unlock it, i read reviews and found out they don't do it and you loose ;your money. So i was wondering where i could go to get it unlocked or what is a good reliable site to unlock it for me?