SIM Free iphone 6s & 6s Plus are Now Available in US. The SIM-free iPhone 6S carries the model number A1633, and the larger iPhone 6S Plus is A1634.
SIM-free phones are different from others as the SIM-free iPhone is unlocked, gives you more freedom to choose a plan as it doesn’t tie you to a carrier or multi-year carrier contracts, But the main difference between SIM-free and contract-free unlocked iPhones appears to be the network bands supported.
SIM Free iphone 6s & 6s Plus are Now Available in US
According to Apple’s site, this model is best for AT&T and all the other smaller carriers like Cricket or US Cellular, because it supports their LTE networks.
The other version available globally and the model you will get with Sprint, T-Mobile and Verizon is the A1688 for the iPhone 6S and A1687 for the iPhone 6S Plus.
This model is listed to support the LTE networks in countries such as Canada, the U.K., France, Germany, Hong Kong, Japan, Singapore, and Australia. So the SIM free iphones will work well in the countries stated above.
In China, you’ll want the third version A1700 for the iPhone 6S and A1699 for the iPhone 6S Plus, which supports the country’s three big carriers China Mobile, China Telecom and China Unicom.
With the iPhone 5S and iPhone 6, Apple started rolling out SIM-free models several months after initial sales began. This time, it’s only been two weeks since the iPhone 6S became available.
Source: Pakistan Tribe