I'm sure that someone out there has run some sort of formal benchmarks, but I can say that the difference between 3G and LTE is easily noticed. Especially as almost everything becomes more media heavy ...

The TOBY-L2 module in a 152-pin LGA package supports data and Voice-over-LTE (VoLTE) with circuit-switched fallback, as well as in-band modem for emergency call services (e.g. eCall). The MPCI-L2 ...

Additionally Infineon announced the 3rd Generation of its successful 3G RF transceiver family, SMARTi™ UE. The SMARTi™ UEmicro is optimized for lowest cost 3G designs and enables an RF-system e-BoM ...