They have very less in Delhi, Mumbai and Kolkata from which Delhi and Kolkata where Vi is weak. Vi has not deployed band 41 in Kolkata and Delhi, that's why there is not enough capacity. Even though Vi was strong in Mumbai circle, Airtel was weak since starting as only 5Mhz band 1/8, 15Mhz of band 3 and 30Mhz of band 40(Airtel should have bought 10Mhz in band 40 in 2021 auction itself). Airtel should have band 3 20Mhz and band 1 10-20Mhz in these circles if they had in mind whatever your said. Now it's too late. But Airtel has one advantage now, in prepaid voice only calls are cheaper at 1999 and in Jio it's costlier I believe. Also, Airtel has higher postpaid customers also Airtel FTTH service is top notch(I mean pings and customer service, better than Airtel). So Airtel needs better bandwidth. Vi customers will come on Airtel postpaid at any time. People have came from Vi to Airtel postpaid and moved to Jio because of better 4G in Mumbai. Because Jio has 40Mhz of band 40/15Mhz of band 5. Better voice quality. Airtel also has very less band 1 in Mumbai. And it never latches on band 1 in Mumbai. So it affects 30Mhz of band 40. It's simply not enough. Same in Kolkata(I guess no band 1 possible) and Delhi. Very poor spectrum portfolio in these circles. Delhi has Excitel so growth in FTTH segment is not possible that much, so atleast focus on mobile segment, that also they are not doing.