There are 3 methods to check if iPhone is Unlocked or Locked. You can do it by using two different SIM-Cards or you can find the SIM-Lock status without using a SIM-Card. The procedure for telling if an iPhone is Unlocked is very quick and easy, through iPhone’s Settings or an iPhone Unlock Check Service. Read more
iPhone unlock check
iOS 9 is not the latest version, but it still causes issues to random iPhone devices.
The reason that an iPhone cannot make phone calls, it might be caused by the iOS version that it uses, but it may also be something completely different.
So, I will divide this article into two sections:
When iOS 9 seems to be the reason for an iPhone not able to make phone calls
When a different reason is the one which causes an iPhone not to be able to make phone calls Read more