no they are not
There are some iphones that do have dual sim cards.
The dual SIM phones allows users to have to SIM cards inside the battery compartment. The user can use a single phone to take calls for two different numbers.
Yes. AT&T is a GSM carrier, meaning all the phones are GSM phones, meaning all the phones require a SIM card to work on a GSM network.
AT&T offers the Nokia Dual Sim as does Rogers. The At&T website shoes atleast 10 different models of Nokia Dual Sim phones of different colours and styles.
One can purchase a dual sim phone on multiple websites that provide cell phones. Such as amazon.com, bestbuy.com or walmart.com. Each of these websites provide related phones, if not the phone you're looking for.
IP phones and smart phones, phones that is capable of connecting to internet. Dual sim can be installed by just adding extra sim jacket at back of battery cover.
If someone wishes to purchase an affordable Dual Sim Phone there are a variety of places where one can do so. Some of these places are; Amazon, Tesco, Dual Sim Phones, Free Your Mobile, Electric Pig and Ebay.
normally dual sim phones can work with one sim,
Yes. iPhones have always been GSM phones. CDMA was introduced with the iPhone 4 and the 4S was the first iPhone to introduce dual band iPhones with GSM/CDMA antennas.
Verizon doesn't use SIM cards, so the Verizon iPhones presumably don't. All AT&T iPhones have a SIM card, though.
UART is abbrevation for Universal Asynchronous Receiver/Transmitter.Dual sim phone usually need to set up UART. You can choose Sim1 or Sim2.when the phone is dual sim cards,dual standby: if you choose Sim1, then Sim1 may have more functions than Sim 2. For example, some phones do not support dual blueteeth, and at that time only one card can own this function.
iPhones need a SIM card to work as a phone. If you don't have a SIM card you can use it as an iTouch.