How do I use CDMA on my iPhone?

Follow these steps for the iPhone 4s (not available on the iPhone 4).

1. Settings. Cellular. . If unavailable, swipe left to access the App Library.
2. Tap. Cellular Data Options. .
3. Tap. Roaming. .
4. Tap the. Voice Roaming switch. to turn on or off .
5. Tap the. International CDMA switch. to turn on or off.

Does iPhone 4 CDMA have SIM card?

(Edit: Device changed to iPhone 4 Verizon, the Sprint/Verizon iPhone 4 is CDMA and lacks a SIM card.)

Where do I find CDMA on my iPhone?

Step 1: Tap the Settings icon.

1. Step 2: Select the Cellular option.
2. Step 3: Select the Cellular Data Options button near the top of the screen.
3. Step 4: Tap the Roaming button near the center of the screen.
4. Step 4: Locate the International CDMA option at the bottom of the screen.

What is CDMA on iPhone?

CDMA stands for “Code Division Multiple Access.” GSM stands for “Global System for Mobiles.” They are 2 radio networks used by wireless carriers. If the GSM/CDMA divide has popped up on your radar, it’s likely because you tried to transfer a phone from one carrier’s service to another and encountered roadblocks.

Which iPhones work in both GSM and CDMA?

The iPhone models sold for Verizon and Sprint service (iPhone Model A1660 and iPhone Plus A1661) have the hardware needed to work with both GSM- and CDMA-based networks, but the reverse isn’t true. Phones sold for AT and T-Mobile service work only on GSM-based networks.

Are all iPhones both CDMA and GSM?

All iPhone 7 models include a GSM modem and should work on any GSM based network as long as they are not carrier locked. Some iPhone models (e.g. A1778 and A1784 sold in the USA for AT and T-Mobile) do not have any CDMA capability, but they all have GSM modems.

Are unlocked iPhones GSM or CDMA?

Can an Unlocked iPhone Be Used With Any Phone Company? Yes. All modern iPhones can work with any major cell phone companies, including the major U.S. carriers AT, Sprint, T-Mobile, and Verizon. This is because they support both GSM phone networks (used by AT and T-Mobile) and CDMA (used by Sprint and Verizon).

How do I know if my iPhone is CDMA or GSM?

In the About (iOS) or Status (Android) page, scroll down and check for a MEID, ESN, or IMEI number. If your phone has a MEID or ESN number, it uses CDMA, and if it has IMEI, it uses GSM. If you see both, that means your phone supports both GSM and CDMA networks.

How do I turn on CDMA mode?

Cell Global Device Settings

1. From home screen, tap Apps Applications icon.
2. Tap Settings.
3. Tap More networks.
4. Tap Mobile networks.
5. Tap Network mode.
6. Tap the appropriate setting: Global, LTE/CDMA, or GSM/UMTS.
7. From Mobile Networks Tap Global Data Roaming Access.