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Is iPhone 4 a GSM phone?

Author

Mia Smith

Published Feb 15, 2026

Is iPhone 4 a GSM phone?

The Apple iPhone 4 is a single SIM (GSM) mobile that accepts a Micro-SIM card. The Apple iPhone 4 measures 115.20 x 59.00 x 9.30mm (height x width x thickness) and weighs 137.00 grams. Connectivity options on the Apple iPhone 4 include Wi-Fi, GPS, Bluetooth v2. 10, and 3G.

Does Verizon still support iPhone 4?

U.S. carrier Verizon has announced that it will stop activating any phone that lacks VoLTE, to help advance the company’s network to 5G technologies. Verizon has only ever supported two 3G-only iPhones on its network, the iPhone 4 and iPhone 4S.

Are iPhone 4 still supported?

The Limits of Using an iPhone 4 With the launch of iOS 8 in 2014, the iPhone 4 no longer supported the iOS latest updates. Most of the apps out there today are tailored to iOS 8 and above, which means that this model will start experiencing some hiccups and crashes while using more intensive applications.

Is my iPhone a 4 or 4s?

Know the model number. The iPhone 4 has the following model numbers: A1332 for GSM models and A1349 for CDMA models. The iPhone 4s has these model numbers: A1431 for GSM model China, and A1387 for CDMA models and GSM models. You can see these model numbers at the back of the iPhone.

How do I know if I have a CDMA or GSM iPhone?

If your phone has an MEID or an ESN number, it’s CDMA. If you see an IMEI number then it’s GSM. If you see both, then your device supports both technologies (lucky you!).

Which iphones are GSM and CDMA?

iPhone CDMA Model Numbers AT is always GSM, T-Mobile is always GSM, while Verizon and Sprint are always CDMA. You can also generally assume that if it uses a SIM card to get online, it’s a GSM iPhone, though some iPhone models like the iPhone 4S have both CDMA and GSM capabilities.

Can an iPhone 4 still be activated?

Yes, you can turn the iPhone 4 on and connect it to the internet. You can still run some applications on it too, but most modern, popular apps will no longer function on the phone. Without the latest software, Apple’s iPhone 4 is also at risk from hackers.

Is Verizon shutting down CDMA?

Verizon has delayed its CDMA 3G network shutdown several times but is now firmly committed to shutting the network down by December 31st, 2022. All 3G basic phones and smartphones will lose service, but some 4G devices will be impacted as well — namely, those that don’t support VoLTE (Voice over LTE).