HTC U Play is a much better choice than HTC 10 EVO as HTC U play offers a better battery backup, it comes with a dual sim option which is not present in HTC 10 EVO, also it provides a faster CPU performance and more 4 GB RAM.
Being at price of 20k ; obviously its the best deal... i got mine 2 weeks ago n my so far experience is outstanding... Camera - Excellent Sound. - Excellent Charging -from 0 100 percent. Around 70 to 80 minutes. Dispaly - great. bright 2k screen. not as great as superameloed but none less either.... above all extremly happy with camera performance... after updating camera app ; definately compete S7.....
with every telecom brand like airtel ; bsnl ; idea ect offering same offers as jio in terms of unlimited calling n data per day ... this question seems bit light now... i have this.mobile with airtel 4g sim n my experience is great... yes... it 4g ( LTE ) BUT NOT VOLTE..
also unlike Jio condition for only 4g devices to work... Airtel n other offer plan for all device wether 2g or 3g or 4g... only difference is in their bandwith ( speed ) in which for 3g speed is more than sufficient to watch full HD or even 4k video hasselfree.