Carrier Aggregation on Airtel 4G LTE

according to my state airtel used to combine two 5mhz 3G carriers when 4G was not there.It also used to show as 4G symbol in samsung phones.it was able to give 20Mbps down and 2mbps up.Though i am not sure about other state but i think max bw will be 10mhz after they shut down 3G.
 
Total band 1 spectrum for Vodafone Idea will be the aggregate of band 1 spectrum held by both Vodafone and Idea. If Idea has 5Mhz band 1 in Chennai, eventually full 15Mhz will be deployed for band 1 LTE.
 
Here in Jharkhand airtel has 30mhz spectrum of B40.i have seen b40 20mhz and b40 10mhz working individually.it can easily do b40 20mhz+b40 10mhz CA here.i think only jio is properly utilising its spectrum.Almost every state it provides 5+3,5+40,3+40,40+40,5+3+40,3+40+40 CA combinations.Even though it has less spectrum than airtel and VIL
 
Airtel does Band 40+ Band 40 and Band 40+ Band 3 here in Kolkata. VIL has the largest amount of spectrum here but they don’t utilise it properly. Jio does Band 40 + Band 40, Band 3 + Band 5, Band 40 + Band 3 and 3CA across all the bands. Yet they have the slowest speeds.
 
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