Differences between GSM and CDMA
The following differences between GSM and CDMA are given below:
| No. | GSM | CDMA |
| 1 | GSM is based on a wedge spectrum called a carrier. | CDMA is based on spread-spectrum technology. |
| 2 | It ensures low security in comparison to CDMA technology. | Higher security is provided in CDMA technology. |
| 3 | It requires no built-in encryption. | It is built-in encryption. |
| 4 | GSM uses EDGE data transfer technology. | CDMA has faster data transfer as it uses EVDO-ready data transfer technology. |
| 5 | A SIM card is required for the functioning of GSM device. | CDMA phones do not have those types of pulses. |
| 6 | GSM phones emit continuous wave pulses and so it is needful to reduce exposure to electromagnetic fields. | CDMA phones do not have those types of pulses. |
| 7 | If offers a maximum download speed of 384 kbps. | It offers a maximum download speed of 2 Mbps. |
