1G, 2G, 3G, 4G, 5G GENERATIONS OF MOBILE TECHNOLOGY, मोबाइल की पीढ़ियां UPSC CSE,Dr Devendra Dhawan 

Thank you so much sir.... I hv seen so many videos, to understand analog and digital signal. U r the only one who explained it very clearly and practically. 👏👏🙏🏼🙏🏼

Fabulous n everything in one videos. The best video's of mobile generation

Very knowlegable video

Thank you sir for this detailed, informative and knowledgeable video !

वाह क्या बात है कैसे कैसे बदल गया हमें का सब खेल है

Tq so kuchh sir jay shree ram

Very informative video sir! Thank you

Very nice

Thankyou sir

Buht sgukriya

Very good bhai

👍

Samay ke anusar sab Badal jata hai

sir fulform of EDGE

Indian cinema I don't get it ,

American scientists ne sabse