With LTE-Advanced Carrier Aggregation being deployed in 2014 it recently struck me that there's a big difference in deployed capacity between LTE and UMTS now. Most network operators have had two 5 MHz carriers deployed for quite a number of years now in busy areas. In some countries, some carriers have more spectrum and have thus deployed three 5 MHz carriers. I'd say that's rather the exception, though. On the LTE side, carriers with enough spectrum have deployed two 20 MHz carriers in busy areas and can easily extend that with additional spectrum in their possession as required. That's also a bit of an exception and I estimate that most carriers have deployed between 10 and 30 MHz today. In other words it's 15 MHz UMTS compared to 40 MHz LTE. Quite a difference and the gap is widening.