What is the Difference Between Apple GSM iPhone 4 and CDMA iPhone 4?

The main difference between the Apple GSM iPhone 4 and CDMA iPhone 4 lies in the network support they provide. Here are the key differences:

1. Network Support: The GSM iPhone 4 supports UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz) and GSM/EDGE (850, 900, 1800, 1900 MHz) networks, while the CDMA iPhone 4 supports CDMA EV-DO Rev. A (800, 1900 MHz) networks.
2. SIM Card: The GSM iPhone 4 has a SIM tray for a micro-SIM card on the right side of the phone, while the CDMA iPhone 4 does not have a SIM tray.
3. Mobile Hotspot Feature: The CDMA iPhone 4 has a mobile hotspot feature, allowing it to connect up to 5 Wi-Fi enabled devices. This feature is not available in the GSM iPhone 4.
4. Model Numbers: The GSM iPhone 4 has the model number A1332, and the CDMA iPhone 4 has the model number A1349.

Despite these differences, both GSM and CDMA iPhone 4 models share the same high-resolution 960x640 at 326 ppi 3.5" IPS display, and they run on Apple's proprietary operating system, iOS.

Comparative Table: Apple GSM iPhone 4 vs CDMA iPhone 4

The main differences between the Apple GSM iPhone 4 and the CDMA iPhone 4 are in their network support and features. Here is a comparison table highlighting the key differences:

Both the GSM and CDMA iPhone 4 models share the same high-resolution 960x640 at 326 ppi 3.5" IPS display and similar hardware features. However, the GSM iPhone 4 supports 2G/EDGE networks, while the CDMA iPhone 4 does not, which affects their talk time and global coverage. The CDMA iPhone 4 also has the added feature of acting as a mobile hotspot, which is not available in the GSM model.