1.无线上网技术：
无线保真 (WiFi) 是一种无线通信技术。它用于局域网。 Wifi 以 2.4 GHz 和 5 GHz 无线电频率传输数据，与 3G 网络相比更稳定、更高。 Wifi 是一种较便宜的技术，可以通过在任何具有无线适配器的计算机上安装无线 LAN 来轻松安装。它可用于连接游戏机、打印机、计算机等。
2. 3G技术：
第三代 (3G) 是一种由服务提供商控制的技术。它适用于基于广域网的应用程序。与 Wifi 相比，它是一种更昂贵的技术，并且只能由运营商公司安装。它比 WiFi 网络更可靠，覆盖范围更大。与 Wifi 不同的是，连接 3G 网络需要付费。
WiFi和3G技术的区别：
| S.NO | WIFI Technology | 3G Technology |
|---|---|---|
| 1. | Wifi router controls the wifi access. | Whereas it is controlled by service provider. |
| 2. | Wifi provides speeds of around 11 Mbps to 55 Mbps. | While 3G provides speeds of around 40 kbps to 70 kbps. |
| 3. | WiFi technology is less expensive than 3G technology in terms of usage. | Whereas it is expensive comparatively. |
| 4. | WiFi is for Local area network based applications. | Whereas 3G is for Wide area network based application. |
| 5. | Wifi transmits data at 2.4 GHz and 5 GHz radio frequencies. | Whereas 3G transmits data at low frequencies ranging from 850 MHz to 1900 MHz. |
| 6. | Wifi frequencies are more stable than 3G frequencies. | Whereas 3G frequency is comparatively less stable. |
| 7. | Wifi can be easily installed by installing a wireless LAN on any computer that has a wireless adapter. | Whereas it can only be installed by carrier companies. |
| 8. | WiFi network is less reliable as compared to 3G network. | Whereas it is more reliable as compared to Wifi networks. |
| 9. | Often there is no need to pay to connect a WiFi network. | Whereas there is need to pay to connect 3G network. |
| 10. | It is more used now-a-days. | While 4G has replaced the 3G network. |