Dual band GSM phone

DualThe introduction of the Dual band GSM phone in the early 2000s marked a significant milestone in the evolution of mobile phones. This type of phone was capable of operating on two frequency bands, which allowed for improved network coverage and call quality. It also paved the way for international roaming and enabled users to make calls in various countries without having to switch phones or SIM cards. The Dual band GSM phone was a major improvement compared to its predecessor, the Single band GSM phone, which was restricted to a single frequency band only. Today, most modern phones now operate on multiple frequency bands, including 3G and 4G LTE bands, which enable faster data speeds and better network coverage.