Bro its Vivo U10 . It has good battery backup is 2 days+ in normal use better than Realme 5 with same 5000 mAH battery . But i must say Realme 5 is way better in looks,Big Screen,Audio,Video,Camera Is all Its awesome at same price only Because Color Os6 its not well optimised so giving 4-5 hours less battery backup than U10 . Also in U10 their is no Inbuilt Video call option but in RM5 that's available also Their is Wide angle , Night Mode , Macro, slo-mo video, 4K video recording in 9K mobile options available in camera
Vivo U10 is well optimised , Funtouch OS 9.1 with Android 9 Pie its running smooth . But In Realme 5 at same price lot more options are available
Ratings from me - Realme 5 - 4.5/5, Vivo U10 - 4/5 .