4G+ is an enhanced version of 4G LTE that offers faster data speeds and better performance. It is also known as LTE-Advanced, LTE-A, or 4.5G. 4G+ uses carrier aggregation to increase the transmission bandwidth, allowing devices to receive data from multiple bands. It can use and combine several bands for a higher service bandwidth and increased network speed. 4G+ can offer data speeds of up to 1 Gbps (theoretical value), which is about 10 times faster than 4G. 4G+ networks are generally faster than 4G networks when downloading a large amount of data. However, the transmission rate of a 4G network is enough for low rate data services, such as browsing the internet, so 4G+ will not take effect in those scenarios. To enable 4G+, users need to activate LTE carrier aggregation in their phone settings.

In summary, 4G+ is an enhanced version of 4G LTE that offers faster data speeds and better performance. It uses carrier aggregation to increase the transmission bandwidth and can offer data speeds of up to 1 Gbps. However, it may not always offer a significant speed boost and is not available everywhere.