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How to Use A Verizon iPhone On AT&T?

Verizon and AT&T both companies are the largest carriers in the United States. Verizon provides the CDMA (Code Division Multiple Access) network technology to its users and AT&T provides the GSM (Global System For Mobile) network technology to its users.

This post will indicate how we can utilize Verizon iPhone on AT&T.

Can I Use a Verizon iPhone On AT&T Carrier Service?

Yes, we can use a Verizon iPhone on AT&T, however, it depends on the model of the iPhone; it must be compatible with both CDMA and GSM networks once unlocked. iPhone’s new models are compatible with both technologies “CDMA and GSM”.

How to Unlock the Verizon iPhone Device?

We can only switch from one carrier service provider to another carrier service provider by unlocking the device. When we buy an iPhone smartphone from Verizon it is locked for 60 days. After 60 days the device will be unlocked automatically, then we are able to switch to another carrier service provider. If the device remained locked even after passing the time span of 60 days, then we have to contact Verizon customer support and have to ask them to unlock the device. If we switch the locked device to another carrier, then we will lose all apps and data stored on the device. So, if we want to avoid any data and information loss then switching the carrier with an unlocked device is the best method.

Drawbacks of the Unlocked Phones

The drawbacks of unlocked phones are mentioned below:

Drawback 1: When we unlock the device and switch to other carriers, this makes us unable to get the firmware updates that are provided by the manufacturers.

Drawback 2: When we unlock the device then the carriers will not provide a warranty anymore. If the device gets broken or has some sort of malfunctioning, then you have to bear the full cost of repair.

Drawback 3: When we unlock the device, then we are unable to use the feature of Wifi calling because carriers require us to use their sim cards for the activation of the Wifi calling.


We can use the Verizon iPhone to AT&T if the iPhone device is compatible with both networks’ “CDMA/GSM” technologies. There is one more condition, the device must be unlocked and the Verizon iPhone takes 60 days to get unlocked. There are many disadvantages to unlocking the device, such as being unable to get the manufacturer updates and being unable to use the feature of wifi calling. In this blog, we have provided all the details that how we can simply utilize the AT&T services on our Verizon iPhone.

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